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[GNUnet-SVN] [presentations] branch master updated: add distribution of


From: gnunet
Subject: [GNUnet-SVN] [presentations] branch master updated: add distribution of revealjs to t33serakts folder and symlink the folders.
Date: Sun, 30 Jun 2019 02:19:58 +0200

This is an automated email from the git hooks/post-receive script.

ng0 pushed a commit to branch master
in repository presentations.

The following commit(s) were added to refs/heads/master by this push:
     new bcfffcd  add distribution of revealjs to t33serakts folder and symlink 
the folders.
bcfffcd is described below

commit bcfffcd95f275e07721c2eeaed1ba480c2a92903
Author: ng0 <address@hidden>
AuthorDate: Sun Jun 30 00:17:09 2019 +0000

    add distribution of revealjs to t33serakts folder and symlink the folders.
---
 t3sserakt/20190131_GNUnet_C4_cologne/css           |    1 +
 t3sserakt/20190131_GNUnet_C4_cologne/js            |    1 +
 t3sserakt/20190131_GNUnet_C4_cologne/lib           |    1 +
 t3sserakt/20190131_GNUnet_C4_cologne/plugin        |    1 +
 .../reveal.js-3.8.0/.gitignore                     |   13 +
 .../reveal.js-3.8.0/.travis.yml                    |    5 +
 .../reveal.js-3.8.0/CONTRIBUTING.md                |   23 +
 .../reveal.js-3.8.0/LICENSE                        |   19 +
 .../reveal.js-3.8.0/README.md                      | 1388 +++++
 .../reveal.js-3.8.0/bower.json                     |   24 +
 .../reveal.js-3.8.0/css/print/paper.css            |  203 +
 .../reveal.js-3.8.0/css/print/pdf.css              |  164 +
 .../reveal.js-3.8.0/css/reset.css                  |   30 +
 .../reveal.js-3.8.0/css/reveal.css                 | 1598 ++++++
 .../reveal.js-3.8.0/css/reveal.scss                | 1768 ++++++
 .../reveal.js-3.8.0/css/theme/README.md            |   21 +
 .../reveal.js-3.8.0/css/theme/beige.css            |  277 +
 .../reveal.js-3.8.0/css/theme/black.css            |  273 +
 .../reveal.js-3.8.0/css/theme/blood.css            |  296 +
 .../reveal.js-3.8.0/css/theme/league.css           |  279 +
 .../reveal.js-3.8.0/css/theme/moon.css             |  277 +
 .../reveal.js-3.8.0/css/theme/night.css            |  271 +
 .../reveal.js-3.8.0/css/theme/serif.css            |  273 +
 .../reveal.js-3.8.0/css/theme/simple.css           |  276 +
 .../reveal.js-3.8.0/css/theme/sky.css              |  280 +
 .../reveal.js-3.8.0/css/theme/solarized.css        |  277 +
 .../reveal.js-3.8.0/css/theme/source/beige.scss    |   39 +
 .../reveal.js-3.8.0/css/theme/source/black.scss    |   49 +
 .../reveal.js-3.8.0/css/theme/source/blood.scss    |   78 +
 .../reveal.js-3.8.0/css/theme/source/league.scss   |   34 +
 .../reveal.js-3.8.0/css/theme/source/moon.scss     |   57 +
 .../reveal.js-3.8.0/css/theme/source/night.scss    |   34 +
 .../reveal.js-3.8.0/css/theme/source/serif.scss    |   35 +
 .../reveal.js-3.8.0/css/theme/source/simple.scss   |   43 +
 .../reveal.js-3.8.0/css/theme/source/sky.scss      |   46 +
 .../css/theme/source/solarized.scss                |   63 +
 .../reveal.js-3.8.0/css/theme/source/white.scss    |   49 +
 .../reveal.js-3.8.0/css/theme/template/mixins.scss |   29 +
 .../css/theme/template/settings.scss               |   45 +
 .../reveal.js-3.8.0/css/theme/template/theme.scss  |  325 ++
 .../reveal.js-3.8.0/css/theme/white.css            |  273 +
 .../reveal.js-3.8.0/demo.html                      |  425 ++
 .../reveal.js-3.8.0/gruntfile.js                   |  192 +
 .../reveal.js-3.8.0/js/reveal.js                   | 6028 ++++++++++++++++++++
 .../reveal.js-3.8.0/lib/css/monokai.css            |   71 +
 .../reveal.js-3.8.0/lib/css/zenburn.css            |   80 +
 .../reveal.js-3.8.0/lib/font/league-gothic/LICENSE |    2 +
 .../lib/font/league-gothic/league-gothic.css       |   10 +
 .../lib/font/league-gothic/league-gothic.eot       |  Bin 0 -> 25696 bytes
 .../lib/font/league-gothic/league-gothic.ttf       |  Bin 0 -> 64256 bytes
 .../lib/font/league-gothic/league-gothic.woff      |  Bin 0 -> 30764 bytes
 .../lib/font/source-sans-pro/LICENSE               |   45 +
 .../source-sans-pro/source-sans-pro-italic.eot     |  Bin 0 -> 75720 bytes
 .../source-sans-pro/source-sans-pro-italic.ttf     |  Bin 0 -> 238084 bytes
 .../source-sans-pro/source-sans-pro-italic.woff    |  Bin 0 -> 98556 bytes
 .../source-sans-pro/source-sans-pro-regular.eot    |  Bin 0 -> 88070 bytes
 .../source-sans-pro/source-sans-pro-regular.ttf    |  Bin 0 -> 288008 bytes
 .../source-sans-pro/source-sans-pro-regular.woff   |  Bin 0 -> 114324 bytes
 .../source-sans-pro/source-sans-pro-semibold.eot   |  Bin 0 -> 89897 bytes
 .../source-sans-pro/source-sans-pro-semibold.ttf   |  Bin 0 -> 284640 bytes
 .../source-sans-pro/source-sans-pro-semibold.woff  |  Bin 0 -> 115648 bytes
 .../source-sans-pro-semibolditalic.eot             |  Bin 0 -> 75706 bytes
 .../source-sans-pro-semibolditalic.ttf             |  Bin 0 -> 240944 bytes
 .../source-sans-pro-semibolditalic.woff            |  Bin 0 -> 98816 bytes
 .../lib/font/source-sans-pro/source-sans-pro.css   |   39 +
 .../reveal.js-3.8.0/lib/js/html5shiv.js            |    7 +
 .../reveal.js-3.8.0/lib/js/promise.js              |    2 +
 .../reveal.js-3.8.0/package-lock.json              | 5891 +++++++++++++++++++
 .../reveal.js-3.8.0/package.json                   |   44 +
 .../reveal.js-3.8.0/plugin/highlight/highlight.js  |  168 +
 .../reveal.js-3.8.0/plugin/markdown/example.html   |  134 +
 .../reveal.js-3.8.0/plugin/markdown/example.md     |   36 +
 .../reveal.js-3.8.0/plugin/markdown/markdown.js    |  446 ++
 .../reveal.js-3.8.0/plugin/markdown/marked.js      |    6 +
 .../reveal.js-3.8.0/plugin/math/math.js            |   92 +
 .../reveal.js-3.8.0/plugin/multiplex/client.js     |   13 +
 .../reveal.js-3.8.0/plugin/multiplex/index.js      |   64 +
 .../reveal.js-3.8.0/plugin/multiplex/master.js     |   34 +
 .../reveal.js-3.8.0/plugin/multiplex/package.json  |   19 +
 .../reveal.js-3.8.0/plugin/notes-server/client.js  |   65 +
 .../reveal.js-3.8.0/plugin/notes-server/index.js   |   69 +
 .../reveal.js-3.8.0/plugin/notes-server/notes.html |  585 ++
 .../reveal.js-3.8.0/plugin/notes/notes.html        |  834 +++
 .../reveal.js-3.8.0/plugin/notes/notes.js          |  178 +
 .../reveal.js-3.8.0/plugin/print-pdf/print-pdf.js  |   67 +
 .../reveal.js-3.8.0/plugin/search/search.js        |  206 +
 .../reveal.js-3.8.0/plugin/zoom-js/zoom.js         |  277 +
 .../test/assets/external-script-a.js               |    1 +
 .../test/assets/external-script-b.js               |    1 +
 .../test/assets/external-script-c.js               |    1 +
 .../test/assets/external-script-d.js               |    1 +
 .../test/examples/assets/beeping.txt               |    2 +
 .../test/examples/assets/beeping.wav               |  Bin 0 -> 422472 bytes
 .../test/examples/assets/image1.png                |  Bin 0 -> 21991 bytes
 .../test/examples/assets/image2.png                |  Bin 0 -> 10237 bytes
 .../reveal.js-3.8.0/test/examples/barebones.html   |   41 +
 .../test/examples/embedded-media.html              |   53 +
 .../reveal.js-3.8.0/test/examples/math.html        |  205 +
 .../test/examples/slide-backgrounds.html           |  143 +
 .../test/examples/slide-transitions.html           |  100 +
 .../reveal.js-3.8.0/test/qunit-2.5.0.css           |  436 ++
 .../reveal.js-3.8.0/test/qunit-2.5.0.js            | 5188 +++++++++++++++++
 .../reveal.js-3.8.0/test/simple.md                 |   12 +
 .../test/test-dependencies-async.html              |   78 +
 .../reveal.js-3.8.0/test/test-dependencies.html    |   54 +
 .../reveal.js-3.8.0/test/test-grid-navigation.html |   74 +
 .../reveal.js-3.8.0/test/test-iframes.html         |  108 +
 .../test/test-markdown-element-attributes.html     |  132 +
 .../test/test-markdown-element-attributes.js       |   44 +
 .../test/test-markdown-external.html               |   37 +
 .../reveal.js-3.8.0/test/test-markdown-external.js |   20 +
 .../test/test-markdown-options.html                |   40 +
 .../reveal.js-3.8.0/test/test-markdown-options.js  |   27 +
 .../test/test-markdown-slide-attributes.html       |  127 +
 .../test/test-markdown-slide-attributes.js         |   44 +
 .../reveal.js-3.8.0/test/test-markdown.html        |   51 +
 .../reveal.js-3.8.0/test/test-markdown.js          |   11 +
 .../reveal.js-3.8.0/test/test-pdf.html             |   82 +
 .../reveal.js-3.8.0/test/test-pdf.js               |   12 +
 .../reveal.js-3.8.0/test/test-plugins.html         |  105 +
 .../reveal.js-3.8.0/test/test-state.html           |  139 +
 .../reveal.js-3.8.0/test/test.html                 |   85 +
 .../reveal.js-3.8.0/test/test.js                   |  598 ++
 123 files changed, 33419 insertions(+)

diff --git a/t3sserakt/20190131_GNUnet_C4_cologne/css 
b/t3sserakt/20190131_GNUnet_C4_cologne/css
new file mode 120000
index 0000000..7034f54
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/css
@@ -0,0 +1 @@
+reveal.js-3.8.0/css
\ No newline at end of file
diff --git a/t3sserakt/20190131_GNUnet_C4_cologne/js 
b/t3sserakt/20190131_GNUnet_C4_cologne/js
new file mode 120000
index 0000000..423302d
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/js
@@ -0,0 +1 @@
+reveal.js-3.8.0/js
\ No newline at end of file
diff --git a/t3sserakt/20190131_GNUnet_C4_cologne/lib 
b/t3sserakt/20190131_GNUnet_C4_cologne/lib
new file mode 120000
index 0000000..6fa8a16
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/lib
@@ -0,0 +1 @@
+reveal.js-3.8.0/lib
\ No newline at end of file
diff --git a/t3sserakt/20190131_GNUnet_C4_cologne/plugin 
b/t3sserakt/20190131_GNUnet_C4_cologne/plugin
new file mode 120000
index 0000000..a9a4d39
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/plugin
@@ -0,0 +1 @@
+reveal.js-3.8.0/plugin
\ No newline at end of file
diff --git a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/.gitignore 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/.gitignore
new file mode 100644
index 0000000..8eda50e
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/.gitignore
@@ -0,0 +1,13 @@
+.idea/
+*.iml
+*.iws
+*.eml
+out/
+.DS_Store
+.svn
+log/*.log
+tmp/**
+node_modules/
+.sass-cache
+css/reveal.min.css
+js/reveal.min.js
diff --git a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/.travis.yml 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/.travis.yml
new file mode 100644
index 0000000..e65e0df
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/.travis.yml
@@ -0,0 +1,5 @@
+language: node_js
+node_js:
+  - 11
+after_script:
+  - npm run build -- retire
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/CONTRIBUTING.md 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/CONTRIBUTING.md
new file mode 100644
index 0000000..c2091e8
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/CONTRIBUTING.md
@@ -0,0 +1,23 @@
+## Contributing
+
+Please keep the [issue tracker](http://github.com/hakimel/reveal.js/issues) 
limited to **bug reports**, **feature requests** and **pull requests**.
+
+
+### Personal Support
+If you have personal support or setup questions the best place to ask those 
are [StackOverflow](http://stackoverflow.com/questions/tagged/reveal.js).
+
+
+### Bug Reports
+When reporting a bug make sure to include information about which browser and 
operating system you are on as well as the necessary steps to reproduce the 
issue. If possible please include a link to a sample presentation where the bug 
can be tested.
+
+
+### Pull Requests
+- Should follow the coding style of the file you work in, most importantly:
+  - Tabs to indent
+  - Single-quoted strings
+- Should be made towards the **dev branch**
+- Should be submitted from a feature/topic branch (not your master)
+
+
+### Plugins
+Please do not submit plugins as pull requests. They should be maintained in 
their own separate repository. More information here: 
https://github.com/hakimel/reveal.js/wiki/Plugin-Guidelines
diff --git a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/LICENSE 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/LICENSE
new file mode 100644
index 0000000..697d156
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/LICENSE
@@ -0,0 +1,19 @@
+Copyright (C) 2019 Hakim El Hattab, http://hakim.se, and reveal.js contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
\ No newline at end of file
diff --git a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/README.md 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/README.md
new file mode 100644
index 0000000..e5a1911
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/README.md
@@ -0,0 +1,1388 @@
+# reveal.js [![Build 
Status](https://travis-ci.org/hakimel/reveal.js.svg?branch=master)](https://travis-ci.org/hakimel/reveal.js)
 <a href="https://slides.com?ref=github";><img 
src="https://s3.amazonaws.com/static.slid.es/images/slides-github-banner-320x40.png?1";
 alt="Slides" width="160" height="20"></a>
+
+A framework for easily creating beautiful presentations using HTML. [Check out 
the live demo](http://revealjs.com/).
+
+reveal.js comes with a broad range of features including [nested 
slides](https://github.com/hakimel/reveal.js#markup), [Markdown 
contents](https://github.com/hakimel/reveal.js#markdown), [PDF 
export](https://github.com/hakimel/reveal.js#pdf-export), [speaker 
notes](https://github.com/hakimel/reveal.js#speaker-notes) and a [JavaScript 
API](https://github.com/hakimel/reveal.js#api). There's also a fully featured 
visual editor and platform for sharing reveal.js presentations at [slides.com] 
[...]
+
+
+## Table of contents
+
+- [Online Editor](#online-editor)
+- [Installation](#installation)
+  - [Basic setup](#basic-setup)
+  - [Full setup](#full-setup)
+  - [Folder Structure](#folder-structure)
+- [Instructions](#instructions)
+  - [Markup](#markup)
+  - [Markdown](#markdown)
+  - [Element Attributes](#element-attributes)
+  - [Slide Attributes](#slide-attributes)
+- [Configuration](#configuration)
+- [Presentation Size](#presentation-size)
+- [Dependencies](#dependencies)
+- [Ready Event](#ready-event)
+- [Auto-sliding](#auto-sliding)
+- [Keyboard Bindings](#keyboard-bindings)
+- [Vertical Slide Navigation](#vertical-slide-navigation)
+- [Touch Navigation](#touch-navigation)
+- [Lazy Loading](#lazy-loading)
+- [API](#api)
+  - [Slide Changed Event](#slide-changed-event)
+  - [Presentation State](#presentation-state)
+  - [Slide States](#slide-states)
+  - [Slide Backgrounds](#slide-backgrounds)
+  - [Parallax Background](#parallax-background)
+  - [Slide Transitions](#slide-transitions)
+  - [Internal links](#internal-links)
+  - [Fragments](#fragments)
+  - [Fragment events](#fragment-events)
+  - [Code syntax highlighting](#code-syntax-highlighting)
+  - [Slide number](#slide-number)
+  - [Overview mode](#overview-mode)
+  - [Fullscreen mode](#fullscreen-mode)
+  - [Embedded media](#embedded-media)
+  - [Stretching elements](#stretching-elements)
+  - [Resize Event](#resize-event)
+  - [postMessage API](#postmessage-api)
+- [PDF Export](#pdf-export)
+- [Theming](#theming)
+- [Speaker Notes](#speaker-notes)
+  - [Share and Print Speaker Notes](#share-and-print-speaker-notes)
+  - [Server Side Speaker Notes](#server-side-speaker-notes)
+- [Multiplexing](#multiplexing)
+  - [Master presentation](#master-presentation)
+  - [Client presentation](#client-presentation)
+  - [Socket.io server](#socketio-server)
+- [MathJax](#mathjax)
+- [License](#license)
+
+#### More reading
+
+- [Changelog](https://github.com/hakimel/reveal.js/releases): Up-to-date 
version history.
+- [Examples](https://github.com/hakimel/reveal.js/wiki/Example-Presentations): 
Presentations created with reveal.js, add your own!
+- [Browser 
Support](https://github.com/hakimel/reveal.js/wiki/Browser-Support): 
Explanation of browser support and fallbacks.
+- 
[Plugins](https://github.com/hakimel/reveal.js/wiki/Plugins,-Tools-and-Hardware):
 A list of plugins that can be used to extend reveal.js.
+
+
+## Online Editor
+
+Presentations are written using HTML or Markdown but there's also an online 
editor for those of you who prefer a graphical interface. Give it a try at 
[https://slides.com](https://slides.com?ref=github).
+
+
+## Installation
+
+The **basic setup** is for authoring presentations only. The **full setup** 
gives you access to all reveal.js features and plugins such as speaker notes as 
well as the development tasks needed to make changes to the source.
+
+### Basic setup
+
+The core of reveal.js is very easy to install. You'll simply need to download 
a copy of this repository and open the index.html file directly in your browser.
+
+1. Download the latest version of reveal.js from 
<https://github.com/hakimel/reveal.js/releases>
+2. Unzip and replace the example contents in index.html with your own
+3. Open index.html in a browser to view it
+
+### Full setup
+
+Some reveal.js features, like external Markdown and speaker notes, require 
that presentations run from a local web server. The following instructions will 
set up such a server as well as all of the development tasks needed to make 
edits to the reveal.js source code.
+
+1. Install [Node.js](http://nodejs.org/) (4.0.0 or later)
+
+1. Clone the reveal.js repository
+   ```sh
+   $ git clone https://github.com/hakimel/reveal.js.git
+   ```
+
+1. Navigate to the reveal.js folder
+   ```sh
+   $ cd reveal.js
+   ```
+
+1. Install dependencies
+   ```sh
+   $ npm install
+   ```
+
+1. Serve the presentation and monitor source files for changes
+   ```sh
+   $ npm start
+   ```
+
+1. Open <http://localhost:8000> to view your presentation
+
+   You can change the port by using `npm start -- --port=8001`.
+
+### Folder Structure
+
+- **css/** Core styles without which the project does not function
+- **js/** Like above but for JavaScript
+- **plugin/** Components that have been developed as extensions to reveal.js
+- **lib/** All other third party assets (JavaScript, CSS, fonts)
+
+
+## Instructions
+
+### Markup
+
+Here's a barebones example of a fully working reveal.js presentation:
+```html
+<html>
+       <head>
+               <link rel="stylesheet" href="css/reveal.css">
+               <link rel="stylesheet" href="css/theme/white.css">
+       </head>
+       <body>
+               <div class="reveal">
+                       <div class="slides">
+                               <section>Slide 1</section>
+                               <section>Slide 2</section>
+                       </div>
+               </div>
+               <script src="js/reveal.js"></script>
+               <script>
+                       Reveal.initialize();
+               </script>
+       </body>
+</html>
+```
+
+The presentation markup hierarchy needs to be `.reveal > .slides > section` 
where the `section` represents one slide and can be repeated indefinitely. If 
you place multiple `section` elements inside of another `section` they will be 
shown as vertical slides. The first of the vertical slides is the "root" of the 
others (at the top), and will be included in the horizontal sequence. For 
example:
+
+```html
+<div class="reveal">
+       <div class="slides">
+               <section>Single Horizontal Slide</section>
+               <section>
+                       <section>Vertical Slide 1</section>
+                       <section>Vertical Slide 2</section>
+               </section>
+       </div>
+</div>
+```
+
+### Markdown
+
+It's possible to write your slides using Markdown. To enable Markdown, add the 
`data-markdown` attribute to your `<section>` elements and wrap the contents in 
a `<textarea data-template>` like the example below. You'll also need to add 
the `plugin/markdown/marked.js` and `plugin/markdown/markdown.js` scripts (in 
that order) to your HTML file.
+
+This is based on [data-markdown](https://gist.github.com/1343518) from [Paul 
Irish](https://github.com/paulirish) modified to use 
[marked](https://github.com/chjj/marked) to support [GitHub Flavored 
Markdown](https://help.github.com/articles/github-flavored-markdown). Sensitive 
to indentation (avoid mixing tabs and spaces) and line breaks (avoid 
consecutive breaks).
+
+```html
+<section data-markdown>
+       <textarea data-template>
+               ## Page title
+
+               A paragraph with some text and a [link](http://hakim.se).
+       </textarea>
+</section>
+```
+
+#### External Markdown
+
+You can write your content as a separate file and have reveal.js load it at 
runtime. Note the separator arguments which determine how slides are delimited 
in the external file: the `data-separator` attribute defines a regular 
expression for horizontal slides (defaults to `^\r?\n---\r?\n$`, a 
newline-bounded horizontal rule)  and `data-separator-vertical` defines 
vertical slides (disabled by default). The `data-separator-notes` attribute is 
a regular expression for specifying the beginnin [...]
+
+When used locally, this feature requires that reveal.js [runs from a local web 
server](#full-setup).  The following example customises all available options:
+
+```html
+<section data-markdown="example.md"
+         data-separator="^\n\n\n"
+         data-separator-vertical="^\n\n"
+         data-separator-notes="^Note:"
+         data-charset="iso-8859-15">
+    <!--
+        Note that Windows uses `\r\n` instead of `\n` as its linefeed 
character.
+        For a regex that supports all operating systems, use `\r?\n` instead 
of `\n`.
+    -->
+</section>
+```
+
+#### Element Attributes
+
+Special syntax (through HTML comments) is available for adding attributes to 
Markdown elements. This is useful for fragments, amongst other things.
+
+```html
+<section data-markdown>
+       <script type="text/template">
+               - Item 1 <!-- .element: class="fragment" 
data-fragment-index="2" -->
+               - Item 2 <!-- .element: class="fragment" 
data-fragment-index="1" -->
+       </script>
+</section>
+```
+
+#### Slide Attributes
+
+Special syntax (through HTML comments) is available for adding attributes to 
the slide `<section>` elements generated by your Markdown.
+
+```html
+<section data-markdown>
+       <script type="text/template">
+       <!-- .slide: data-background="#ff0000" -->
+               Markdown content
+       </script>
+</section>
+```
+
+#### Configuring *marked*
+
+We use [marked](https://github.com/chjj/marked) to parse Markdown. To 
customise marked's rendering, you can pass in options when [configuring 
Reveal](#configuration):
+
+```javascript
+Reveal.initialize({
+       // Options which are passed into marked
+       // See https://marked.js.org/#/USING_ADVANCED.md#options
+       markdown: {
+               smartypants: true
+       }
+});
+```
+
+### Configuration
+
+At the end of your page you need to initialize reveal by running the following 
code. Note that all configuration values are optional and will default to the 
values specified below.
+
+```javascript
+Reveal.initialize({
+
+       // Display presentation control arrows
+       controls: true,
+
+       // Help the user learn the controls by providing hints, for example by
+       // bouncing the down arrow when they first encounter a vertical slide
+       controlsTutorial: true,
+
+       // Determines where controls appear, "edges" or "bottom-right"
+       controlsLayout: 'bottom-right',
+
+       // Visibility rule for backwards navigation arrows; "faded", "hidden"
+       // or "visible"
+       controlsBackArrows: 'faded',
+
+       // Display a presentation progress bar
+       progress: true,
+
+       // Display the page number of the current slide
+       slideNumber: false,
+
+       // Add the current slide number to the URL hash so that reloading the
+       // page/copying the URL will return you to the same slide
+       hash: false,
+
+       // Push each slide change to the browser history. Implies `hash: true`
+       history: false,
+
+       // Enable keyboard shortcuts for navigation
+       keyboard: true,
+
+       // Enable the slide overview mode
+       overview: true,
+
+       // Vertical centering of slides
+       center: true,
+
+       // Enables touch navigation on devices with touch input
+       touch: true,
+
+       // Loop the presentation
+       loop: false,
+
+       // Change the presentation direction to be RTL
+       rtl: false,
+
+       // See https://github.com/hakimel/reveal.js/#navigation-mode
+       navigationMode: 'default',
+
+       // Randomizes the order of slides each time the presentation loads
+       shuffle: false,
+
+       // Turns fragments on and off globally
+       fragments: true,
+
+       // Flags whether to include the current fragment in the URL,
+       // so that reloading brings you to the same fragment position
+       fragmentInURL: false,
+
+       // Flags if the presentation is running in an embedded mode,
+       // i.e. contained within a limited portion of the screen
+       embedded: false,
+
+       // Flags if we should show a help overlay when the questionmark
+       // key is pressed
+       help: true,
+
+       // Flags if speaker notes should be visible to all viewers
+       showNotes: false,
+
+       // Global override for autoplaying embedded media (video/audio/iframe)
+       // - null: Media will only autoplay if data-autoplay is present
+       // - true: All media will autoplay, regardless of individual setting
+       // - false: No media will autoplay, regardless of individual setting
+       autoPlayMedia: null,
+
+       // Global override for preloading lazy-loaded iframes
+       // - null: Iframes with data-src AND data-preload will be loaded when 
within
+       //   the viewDistance, iframes with only data-src will be loaded when 
visible
+       // - true: All iframes with data-src will be loaded when within the 
viewDistance
+       // - false: All iframes with data-src will be loaded only when visible
+       preloadIframes: null,
+
+       // Number of milliseconds between automatically proceeding to the
+       // next slide, disabled when set to 0, this value can be overwritten
+       // by using a data-autoslide attribute on your slides
+       autoSlide: 0,
+
+       // Stop auto-sliding after user input
+       autoSlideStoppable: true,
+
+       // Use this method for navigation when auto-sliding
+       autoSlideMethod: Reveal.navigateNext,
+
+       // Specify the average time in seconds that you think you will spend
+       // presenting each slide. This is used to show a pacing timer in the
+       // speaker view
+       defaultTiming: 120,
+
+       // Enable slide navigation via mouse wheel
+       mouseWheel: false,
+
+       // Hide cursor if inactive
+       hideInactiveCursor: true,
+
+       // Time before the cursor is hidden (in ms)
+       hideCursorTime: 5000,
+
+       // Hides the address bar on mobile devices
+       hideAddressBar: true,
+
+       // Opens links in an iframe preview overlay
+       // Add `data-preview-link` and `data-preview-link="false"` to customise 
each link
+       // individually
+       previewLinks: false,
+
+       // Transition style
+       transition: 'slide', // none/fade/slide/convex/concave/zoom
+
+       // Transition speed
+       transitionSpeed: 'default', // default/fast/slow
+
+       // Transition style for full page slide backgrounds
+       backgroundTransition: 'fade', // none/fade/slide/convex/concave/zoom
+
+       // Number of slides away from the current that are visible
+       viewDistance: 3,
+
+       // Parallax background image
+       parallaxBackgroundImage: '', // e.g. 
"'https://s3.amazonaws.com/hakim-static/reveal-js/reveal-parallax-1.jpg'"
+
+       // Parallax background size
+       parallaxBackgroundSize: '', // CSS syntax, e.g. "2100px 900px"
+
+       // Number of pixels to move the parallax background per slide
+       // - Calculated automatically unless specified
+       // - Set to 0 to disable movement along an axis
+       parallaxBackgroundHorizontal: null,
+       parallaxBackgroundVertical: null,
+
+       // The display mode that will be used to show slides
+       display: 'block'
+
+});
+```
+
+The configuration can be updated after initialization using the `configure` 
method:
+
+```javascript
+// Turn autoSlide off
+Reveal.configure({ autoSlide: 0 });
+
+// Start auto-sliding every 5s
+Reveal.configure({ autoSlide: 5000 });
+```
+
+### Presentation Size
+
+All presentations have a normal size, that is, the resolution at which they 
are authored. The framework will automatically scale presentations uniformly 
based on this size to ensure that everything fits on any given display or 
viewport.
+
+See below for a list of configuration options related to sizing, including 
default values:
+
+```javascript
+Reveal.initialize({
+
+       // ...
+
+       // The "normal" size of the presentation, aspect ratio will be preserved
+       // when the presentation is scaled to fit different resolutions. Can be
+       // specified using percentage units.
+       width: 960,
+       height: 700,
+
+       // Factor of the display size that should remain empty around the 
content
+       margin: 0.1,
+
+       // Bounds for smallest/largest possible scale to apply to content
+       minScale: 0.2,
+       maxScale: 1.5
+
+});
+```
+
+If you wish to disable this behavior and do your own scaling (e.g. using media 
queries), try these settings:
+
+```javascript
+Reveal.initialize({
+
+       // ...
+
+       width: "100%",
+       height: "100%",
+       margin: 0,
+       minScale: 1,
+       maxScale: 1
+});
+```
+
+### Dependencies
+
+Reveal.js doesn't _rely_ on any third party scripts to work but a few optional 
libraries are included by default. These libraries are loaded as dependencies 
in the order they appear, for example:
+
+```javascript
+Reveal.initialize({
+       dependencies: [
+               // Interpret Markdown in <section> elements
+               { src: 'plugin/markdown/marked.js', condition: function() { 
return !!document.querySelector( '[data-markdown]' ); } },
+               { src: 'plugin/markdown/markdown.js', condition: function() { 
return !!document.querySelector( '[data-markdown]' ); } },
+
+               // Syntax highlight for <code> elements
+               { src: 'plugin/highlight/highlight.js', async: true, callback: 
function() { hljs.initHighlightingOnLoad(); } },
+
+               // Zoom in and out with Alt+click
+               { src: 'plugin/zoom-js/zoom.js', async: true },
+
+               // Speaker notes
+               { src: 'plugin/notes/notes.js', async: true },
+
+               // MathJax
+               { src: 'plugin/math/math.js', async: true }
+       ]
+});
+```
+
+You can add your own extensions using the same syntax. The following 
properties are available for each dependency object:
+- **src**: Path to the script to load
+- **async**: [optional] Flags if the script should load after reveal.js has 
started, defaults to false
+- **callback**: [optional] Function to execute when the script has loaded
+- **condition**: [optional] Function which must return true for the script to 
be loaded
+
+### Ready Event
+
+A `ready` event is fired when reveal.js has loaded all non-async dependencies 
and is ready to start navigating. To check if reveal.js is already 'ready' you 
can call `Reveal.isReady()`.
+
+```javascript
+Reveal.addEventListener( 'ready', function( event ) {
+       // event.currentSlide, event.indexh, event.indexv
+} );
+```
+
+Note that we also add a `.ready` class to the `.reveal` element so that you 
can hook into this with CSS.
+
+### Auto-sliding
+
+Presentations can be configured to progress through slides automatically, 
without any user input. To enable this you will need to tell the framework how 
many milliseconds it should wait between slides:
+
+```javascript
+// Slide every five seconds
+Reveal.configure({
+  autoSlide: 5000
+});
+```
+
+When this is turned on a control element will appear that enables users to 
pause and resume auto-sliding. Alternatively, sliding can be paused or resumed 
by pressing »A« on the keyboard. Sliding is paused automatically as soon as the 
user starts navigating. You can disable these controls by specifying 
`autoSlideStoppable: false` in your reveal.js config.
+
+You can also override the slide duration for individual slides and fragments 
by using the `data-autoslide` attribute:
+
+```html
+<section data-autoslide="2000">
+       <p>After 2 seconds the first fragment will be shown.</p>
+       <p class="fragment" data-autoslide="10000">After 10 seconds the next 
fragment will be shown.</p>
+       <p class="fragment">Now, the fragment is displayed for 2 seconds before 
the next slide is shown.</p>
+</section>
+```
+
+To override the method used for navigation when auto-sliding, you can specify 
the `autoSlideMethod` setting. To only navigate along the top layer and ignore 
vertical slides, set this to `Reveal.navigateRight`.
+
+Whenever the auto-slide mode is resumed or paused the `autoslideresumed` and 
`autoslidepaused` events are fired.
+
+### Keyboard Bindings
+
+If you're unhappy with any of the default keyboard bindings you can override 
them using the `keyboard` config option:
+
+```javascript
+Reveal.configure({
+  keyboard: {
+    13: 'next', // go to the next slide when the ENTER key is pressed
+    27: function() {}, // do something custom when ESC is pressed
+    32: null // don't do anything when SPACE is pressed (i.e. disable a 
reveal.js default binding)
+  }
+});
+```
+
+### Vertical Slide Navigation
+
+Slides can be nested within other slides to create vertical stacks (see 
[Markup](#markup)). When presenting, you use the left/right arrows to step 
through the main (horizontal) slides. When you arrive at a vertical stack you 
can optionally press the up/down arrows to view the vertical slides or skip 
past them by pressing the right arrow. Here's an example showing a bird's-eye 
view of what this looks like in action:
+
+<img src="https://static.slid.es/support/reveal.js-vertical-slides.gif"; 
width="450">
+
+#### Navigation Mode
+You can finetune the reveal.js navigation behavior by using the 
`navigationMode` config option. Note that these options are only useful for 
presnetations that use a mix of horizontal and vertical slides. The following 
navigation modes are available:
+
+| Value                         | Description |
+| :---------------------------  | :---------- |
+| default                       | Left/right arrow keys step between 
horizontal slides. Up/down arrow keys step between vertical slides. Space key 
steps through all slides (both horizontal and vertical). |
+| linear                        | Removes the up/down arrows. Left/right 
arrows step through all slides (both horizontal and vertical). |
+| grid                          | When this is enabled, stepping left/right 
from a vertical stack to an adjacent vertical stack will land you at the same 
vertical index.<br><br>Consider a deck with six slides ordered in two vertical 
stacks:<br>`1.1`&nbsp;&nbsp;&nbsp;&nbsp;`2.1`<br>`1.2`&nbsp;&nbsp;&nbsp;&nbsp;`2.2`<br>`1.3`&nbsp;&nbsp;&nbsp;&nbsp;`2.3`<br><br>If
 you're on slide 1.3 and navigate right, you will normally move from 1.3 -> 
2.1. With navigationMode set to "grid" the same navi [...]
+
+### Touch Navigation
+
+You can swipe to navigate through a presentation on any touch-enabled device. 
Horizontal swipes change between horizontal slides, vertical swipes change 
between vertical slides. If you wish to disable this you can set the `touch` 
config option to false when initializing reveal.js.
+
+If there's some part of your content that needs to remain accessible to touch 
events you'll need to highlight this by adding a `data-prevent-swipe` attribute 
to the element. One common example where this is useful is elements that need 
to be scrolled.
+
+### Lazy Loading
+
+When working on presentation with a lot of media or iframe content it's 
important to load lazily. Lazy loading means that reveal.js will only load 
content for the few slides nearest to the current slide. The number of slides 
that are preloaded is determined by the `viewDistance` configuration option.
+
+To enable lazy loading all you need to do is change your `src` attributes to 
`data-src` as shown below. This is supported for image, video, audio and iframe 
elements.
+
+```html
+<section>
+  <img data-src="image.png">
+  <iframe data-src="http://hakim.se";></iframe>
+  <video>
+    <source data-src="video.webm" type="video/webm" />
+    <source data-src="video.mp4" type="video/mp4" />
+  </video>
+</section>
+```
+
+#### Lazy Loading Iframes
+
+Note that lazy loaded iframes ignore the `viewDistance` configuration and will 
only load when their containing slide becomes visible. Iframes are also 
unloaded as soon as the slide is hidden.
+
+When we lazy load a video or audio element, reveal.js won't start playing that 
content until the slide becomes visible. However there is no way to control 
this for an iframe since that could contain any kind of content. That means if 
we loaded an iframe before the slide is visible on screen it could begin 
playing media and sound in the background.
+
+You can override this behavior with the `data-preload` attribute. The iframe 
below will be loaded
+according to the `viewDistance`.
+
+```html
+<section>
+       <iframe data-src="http://hakim.se"; data-preload></iframe>
+</section>
+```
+
+You can also change the default globally with the `preloadIframes` 
configuration option. If set to
+`true` ALL iframes with a `data-src` attribute will be preloaded when within 
the `viewDistance`
+regardless of individual `data-preload` attributes. If set to `false`, all 
iframes will only be
+loaded when they become visible.
+
+### API
+
+The `Reveal` object exposes a JavaScript API for controlling navigation and 
reading state:
+
+```javascript
+// Navigation
+Reveal.slide( indexh, indexv, indexf );
+Reveal.left();
+Reveal.right();
+Reveal.up();
+Reveal.down();
+Reveal.prev();
+Reveal.next();
+Reveal.prevFragment();
+Reveal.nextFragment();
+
+// Randomize the order of slides
+Reveal.shuffle();
+
+// Toggle presentation states, optionally pass true/false to force on/off
+Reveal.toggleOverview();
+Reveal.togglePause();
+Reveal.toggleAutoSlide();
+
+// Shows a help overlay with keyboard shortcuts, optionally pass true/false
+// to force on/off
+Reveal.toggleHelp();
+
+// Change a config value at runtime
+Reveal.configure({ controls: true });
+
+// Returns the present configuration options
+Reveal.getConfig();
+
+// Fetch the current scale of the presentation
+Reveal.getScale();
+
+// Retrieves the previous and current slide elements
+Reveal.getPreviousSlide();
+Reveal.getCurrentSlide();
+
+Reveal.getIndices();        // { h: 0, v: 0, f: 0 }
+Reveal.getSlidePastCount();
+Reveal.getProgress();       // (0 == first slide, 1 == last slide)
+Reveal.getSlides();         // Array of all slides
+Reveal.getTotalSlides();    // Total number of slides
+
+// Returns the speaker notes for the current slide
+Reveal.getSlideNotes();
+
+// State checks
+Reveal.isFirstSlide();
+Reveal.isLastSlide();
+Reveal.isOverview();
+Reveal.isPaused();
+Reveal.isAutoSliding();
+
+// Returns the top-level DOM element
+getRevealElement(); // <div class="reveal">...</div>
+```
+
+### Custom Key Bindings
+
+Custom key bindings can be added and removed using the following Javascript 
API. Custom key bindings will override the default keyboard bindings, but will 
in turn be overridden by the user defined bindings in the ``keyboard`` config 
option.
+
+```javascript
+Reveal.addKeyBinding( binding, callback );
+Reveal.removeKeyBinding( keyCode );
+```
+
+For example
+
+```javascript
+// The binding parameter provides the following properties
+//      keyCode: the keycode for binding to the callback
+//          key: the key label to show in the help overlay
+//  description: the description of the action to show in the help overlay
+Reveal.addKeyBinding( { keyCode: 84, key: 'T', description: 'Start timer' }, 
function() {
+       // start timer
+} )
+
+// The binding parameter can also be a direct keycode without providing the 
help description
+Reveal.addKeyBinding( 82, function() {
+       // reset timer
+} )
+```
+
+This allows plugins to add key bindings directly to Reveal so they can
+
+* make use of Reveal's pre-processing logic for key handling (for example, 
ignoring key presses when paused); and
+* be included in the help overlay (optional)
+
+### Slide Changed Event
+
+A `slidechanged` event is fired each time the slide is changed (regardless of 
state). The event object holds the index values of the current slide as well as 
a reference to the previous and current slide HTML nodes.
+
+Some libraries, like MathJax (see 
[#226](https://github.com/hakimel/reveal.js/issues/226#issuecomment-10261609)), 
get confused by the transforms and display states of slides. Often times, this 
can be fixed by calling their update or render function from this callback.
+
+```javascript
+Reveal.addEventListener( 'slidechanged', function( event ) {
+       // event.previousSlide, event.currentSlide, event.indexh, event.indexv
+} );
+```
+
+### Presentation State
+
+The presentation's current state can be fetched by using the `getState` 
method. A state object contains all of the information required to put the 
presentation back as it was when `getState` was first called. Sort of like a 
snapshot. It's a simple object that can easily be stringified and persisted or 
sent over the wire.
+
+```javascript
+Reveal.slide( 1 );
+// we're on slide 1
+
+var state = Reveal.getState();
+
+Reveal.slide( 3 );
+// we're on slide 3
+
+Reveal.setState( state );
+// we're back on slide 1
+```
+
+### Slide States
+
+If you set `data-state="somestate"` on a slide `<section>`, "somestate" will 
be applied as a class on the document element when that slide is opened. This 
allows you to apply broad style changes to the page based on the active slide.
+
+Furthermore you can also listen to these changes in state via JavaScript:
+
+```javascript
+Reveal.addEventListener( 'somestate', function() {
+       // TODO: Sprinkle magic
+}, false );
+```
+
+### Slide Backgrounds
+
+Slides are contained within a limited portion of the screen by default to 
allow them to fit any display and scale uniformly. You can apply full page 
backgrounds outside of the slide area by adding a `data-background` attribute 
to your `<section>` elements. Four different types of backgrounds are 
supported: color, image, video and iframe.
+
+#### Color Backgrounds
+
+All CSS color formats are supported, including hex values, keywords, `rgba()` 
or `hsl()`.
+
+```html
+<section data-background-color="#ff0000">
+       <h2>Color</h2>
+</section>
+```
+
+#### Image Backgrounds
+
+By default, background images are resized to cover the full page. Available 
options:
+
+| Attribute                        | Default    | Description |
+| :------------------------------- | :--------- | :---------- |
+| data-background-image            |            | URL of the image to show. 
GIFs restart when the slide opens. |
+| data-background-size             | cover      | See 
[background-size](https://developer.mozilla.org/docs/Web/CSS/background-size) 
on MDN.  |
+| data-background-position         | center     | See 
[background-position](https://developer.mozilla.org/docs/Web/CSS/background-position)
 on MDN. |
+| data-background-repeat           | no-repeat  | See 
[background-repeat](https://developer.mozilla.org/docs/Web/CSS/background-repeat)
 on MDN. |
+| data-background-opacity          | 1          | Opacity of the background 
image on a 0-1 scale. 0 is transparent and 1 is fully opaque. |
+
+```html
+<section data-background-image="http://example.com/image.png";>
+       <h2>Image</h2>
+</section>
+<section data-background-image="http://example.com/image.png"; 
data-background-size="100px" data-background-repeat="repeat">
+       <h2>This background image will be sized to 100px and repeated</h2>
+</section>
+```
+
+#### Video Backgrounds
+
+Automatically plays a full size video behind the slide.
+
+| Attribute                        | Default | Description |
+| :---------------------------     | :------ | :---------- |
+| data-background-video            |         | A single video source, or a 
comma separated list of video sources. |
+| data-background-video-loop       | false   | Flags if the video should play 
repeatedly. |
+| data-background-video-muted      | false   | Flags if the audio should be 
muted. |
+| data-background-size             | cover   | Use `cover` for full screen and 
some cropping or `contain` for letterboxing. |
+| data-background-opacity          | 1       | Opacity of the background video 
on a 0-1 scale. 0 is transparent and 1 is fully opaque. |
+
+```html
+<section 
data-background-video="https://s3.amazonaws.com/static.slid.es/site/homepage/v1/homepage-video-editor.mp4,https://s3.amazonaws.com/static.slid.es/site/homepage/v1/homepage-video-editor.webm";
 data-background-video-loop data-background-video-muted>
+       <h2>Video</h2>
+</section>
+```
+
+#### Iframe Backgrounds
+
+Embeds a web page as a slide background that covers 100% of the reveal.js 
width and height. The iframe is in the background layer, behind your slides, 
and as such it's not possible to interact with it by default. To make your 
background interactive, you can add the `data-background-interactive` attribute.
+
+```html
+<section data-background-iframe="https://slides.com"; 
data-background-interactive>
+       <h2>Iframe</h2>
+</section>
+```
+
+#### Background Transitions
+
+Backgrounds transition using a fade animation by default. This can be changed 
to a linear sliding transition by passing `backgroundTransition: 'slide'` to 
the `Reveal.initialize()` call. Alternatively you can set 
`data-background-transition` on any section with a background to override that 
specific transition.
+
+
+### Parallax Background
+
+If you want to use a parallax scrolling background, set the first two 
properties below when initializing reveal.js (the other two are optional).
+
+```javascript
+Reveal.initialize({
+
+       // Parallax background image
+       parallaxBackgroundImage: '', // e.g. 
"https://s3.amazonaws.com/hakim-static/reveal-js/reveal-parallax-1.jpg";
+
+       // Parallax background size
+       parallaxBackgroundSize: '', // CSS syntax, e.g. "2100px 900px" - 
currently only pixels are supported (don't use % or auto)
+
+       // Number of pixels to move the parallax background per slide
+       // - Calculated automatically unless specified
+       // - Set to 0 to disable movement along an axis
+       parallaxBackgroundHorizontal: 200,
+       parallaxBackgroundVertical: 50
+
+});
+```
+
+Make sure that the background size is much bigger than screen size to allow 
for some scrolling. [View 
example](http://revealjs.com/?parallaxBackgroundImage=https%3A%2F%2Fs3.amazonaws.com%2Fhakim-static%2Freveal-js%2Freveal-parallax-1.jpg&parallaxBackgroundSize=2100px%20900px).
+
+### Slide Transitions
+
+The global presentation transition is set using the `transition` config value. 
You can override the global transition for a specific slide by using the 
`data-transition` attribute:
+
+```html
+<section data-transition="zoom">
+       <h2>This slide will override the presentation transition and zoom!</h2>
+</section>
+
+<section data-transition-speed="fast">
+       <h2>Choose from three transition speeds: default, fast or slow!</h2>
+</section>
+```
+
+You can also use different in and out transitions for the same slide:
+
+```html
+<section data-transition="slide">
+    The train goes on …
+</section>
+<section data-transition="slide">
+    and on …
+</section>
+<section data-transition="slide-in fade-out">
+    and stops.
+</section>
+<section data-transition="fade-in slide-out">
+    (Passengers entering and leaving)
+</section>
+<section data-transition="slide">
+    And it starts again.
+</section>
+```
+You can choose from `none`, `fade`, `slide`, `convex`, `concave` and `zoom`.
+### Internal links
+
+It's easy to link between slides. The first example below targets the index of 
another slide whereas the second targets a slide with an ID attribute 
(`<section id="some-slide">`):
+
+```html
+<a href="#/2/2">Link</a>
+<a href="#/some-slide">Link</a>
+```
+
+You can also add relative navigation links, similar to the built in reveal.js 
controls, by appending one of the following classes on any element. Note that 
each element is automatically given an `enabled` class when it's a valid 
navigation route based on the current slide.
+
+```html
+<a href="#" class="navigate-left">
+<a href="#" class="navigate-right">
+<a href="#" class="navigate-up">
+<a href="#" class="navigate-down">
+<a href="#" class="navigate-prev"> <!-- Previous vertical or horizontal slide 
-->
+<a href="#" class="navigate-next"> <!-- Next vertical or horizontal slide -->
+```
+
+### Fragments
+
+Fragments are used to highlight individual elements on a slide. Every element 
with the class `fragment` will be stepped through before moving on to the next 
slide. Here's an example: http://revealjs.com/#/fragments
+
+The default fragment style is to start out invisible and fade in. This style 
can be changed by appending a different class to the fragment:
+
+```html
+<section>
+       <p class="fragment grow">grow</p>
+       <p class="fragment shrink">shrink</p>
+       <p class="fragment fade-out">fade-out</p>
+       <p class="fragment fade-up">fade-up (also down, left and right!)</p>
+       <p class="fragment fade-in-then-out">fades in, then out when we move to 
the next step</p>
+       <p class="fragment fade-in-then-semi-out">fades in, then obfuscate when 
we move to the next step</p>
+       <p class="fragment highlight-current-blue">blue only once</p>
+       <p class="fragment highlight-red">highlight-red</p>
+       <p class="fragment highlight-green">highlight-green</p>
+       <p class="fragment highlight-blue">highlight-blue</p>
+</section>
+```
+
+Multiple fragments can be applied to the same element sequentially by wrapping 
it, this will fade in the text on the first step and fade it back out on the 
second.
+
+```html
+<section>
+       <span class="fragment fade-in">
+               <span class="fragment fade-out">I'll fade in, then out</span>
+       </span>
+</section>
+```
+
+The display order of fragments can be controlled using the 
`data-fragment-index` attribute.
+
+```html
+<section>
+       <p class="fragment" data-fragment-index="3">Appears last</p>
+       <p class="fragment" data-fragment-index="1">Appears first</p>
+       <p class="fragment" data-fragment-index="2">Appears second</p>
+</section>
+```
+
+### Fragment events
+
+When a slide fragment is either shown or hidden reveal.js will dispatch an 
event.
+
+Some libraries, like MathJax (see #505), get confused by the initially hidden 
fragment elements. Often times this can be fixed by calling their update or 
render function from this callback.
+
+```javascript
+Reveal.addEventListener( 'fragmentshown', function( event ) {
+       // event.fragment = the fragment DOM element
+} );
+Reveal.addEventListener( 'fragmenthidden', function( event ) {
+       // event.fragment = the fragment DOM element
+} );
+```
+
+### Code syntax highlighting
+
+By default, Reveal is configured with [highlight.js](https://highlightjs.org/) 
for code syntax highlighting. To enable syntax highlighting, you'll have to 
load the highlight plugin 
([plugin/highlight/highlight.js](plugin/highlight/highlight.js)) and a 
highlight.js CSS theme (Reveal comes packaged with the Monokai themes: 
[lib/css/monokai.css](lib/css/monokai.css)).
+
+```javascript
+Reveal.initialize({
+       // More info https://github.com/hakimel/reveal.js#dependencies
+       dependencies: [
+               { src: 'plugin/highlight/highlight.js', async: true, callback: 
function() { hljs.initHighlightingOnLoad(); } },
+       ]
+});
+```
+
+Below is an example with clojure code that will be syntax highlighted. When 
the `data-trim` attribute is present, surrounding whitespace is automatically 
removed.  HTML will be escaped by default. To avoid this, for example if you 
are using `<mark>` to call out a line of code, add the `data-noescape` 
attribute to the `<code>` element.
+
+```html
+<section>
+       <pre><code data-trim data-noescape>
+(def lazy-fib
+  (concat
+   [0 1]
+   <mark>((fn rfib [a b]</mark>
+        (lazy-cons (+ a b) (rfib b (+ a b)))) 0 1)))
+       </code></pre>
+</section>
+```
+
+### Slide number
+
+If you would like to display the page number of the current slide you can do 
so using the `slideNumber` and `showSlideNumber` configuration values.
+
+```javascript
+// Shows the slide number using default formatting
+Reveal.configure({ slideNumber: true });
+
+// Slide number formatting can be configured using these variables:
+//  "h.v":     horizontal . vertical slide number (default)
+//  "h/v":     horizontal / vertical slide number
+//    "c":     flattened slide number
+//  "c/t":     flattened slide number / total slides
+Reveal.configure({ slideNumber: 'c/t' });
+
+// You can provide a function to fully customize the number:
+Reveal.configure({ slideNumber: function() {
+    // Ignore numbering of vertical slides
+    return [ Reveal.getIndices().h ];
+}});
+
+// Control which views the slide number displays on using the 
"showSlideNumber" value:
+//     "all": show on all views (default)
+// "speaker": only show slide numbers on speaker notes view
+//   "print": only show slide numbers when printing to PDF
+Reveal.configure({ showSlideNumber: 'speaker' });
+```
+
+### Overview mode
+
+Press »ESC« or »O« keys to toggle the overview mode on and off. While you're 
in this mode, you can still navigate between slides,
+as if you were at 1,000 feet above your presentation. The overview mode comes 
with a few API hooks:
+
+```javascript
+Reveal.addEventListener( 'overviewshown', function( event ) { /* ... */ } );
+Reveal.addEventListener( 'overviewhidden', function( event ) { /* ... */ } );
+
+// Toggle the overview mode programmatically
+Reveal.toggleOverview();
+```
+
+### Fullscreen mode
+
+Just press »F« on your keyboard to show your presentation in fullscreen mode. 
Press the »ESC« key to exit fullscreen mode.
+
+### Embedded media
+
+Add `data-autoplay` to your media element if you want it to automatically 
start playing when the slide is shown:
+
+```html
+<video data-autoplay 
src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4";></video>
+```
+
+If you want to enable or disable autoplay globally, for all embedded media, 
you can use the `autoPlayMedia` configuration option. If you set this to `true` 
ALL media will autoplay regardless of individual `data-autoplay` attributes. If 
you initialize with `autoPlayMedia: false` NO media will autoplay.
+
+Note that embedded HTML5 `<video>`/`<audio>` and YouTube/Vimeo iframes are 
automatically paused when you navigate away from a slide. This can be disabled 
by decorating your element with a `data-ignore` attribute.
+
+### Embedded iframes
+
+reveal.js automatically pushes two [post 
messages](https://developer.mozilla.org/en-US/docs/Web/API/Window.postMessage) 
to embedded iframes. `slide:start` when the slide containing the iframe is made 
visible and `slide:stop` when it is hidden.
+
+### Stretching elements
+
+Sometimes it's desirable to have an element, like an image or video, stretch 
to consume as much space as possible within a given slide. This can be done by 
adding the `.stretch` class to an element as seen below:
+
+```html
+<section>
+       <h2>This video will use up the remaining space on the slide</h2>
+    <video class="stretch" 
src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4";></video>
+</section>
+```
+
+Limitations:
+- Only direct descendants of a slide section can be stretched
+- Only one descendant per slide section can be stretched
+
+### Resize Event
+
+When reveal.js changes the scale of the slides it fires a resize event. You 
can subscribe to the event to resize your elements accordingly.
+
+```javascript
+Reveal.addEventListener( 'resize', function( event ) {
+       // event.scale, event.oldScale, event.size
+} );
+```
+
+### postMessage API
+
+The framework has a built-in postMessage API that can be used when 
communicating with a presentation inside of another window. Here's an example 
showing how you'd make a reveal.js instance in the given window proceed to 
slide 2:
+
+```javascript
+<window>.postMessage( JSON.stringify({ method: 'slide', args: [ 2 ] }), '*' );
+```
+
+When reveal.js runs inside of an iframe it can optionally bubble all of its 
events to the parent. Bubbled events are stringified JSON with three fields: 
namespace, eventName and state. Here's how you subscribe to them from the 
parent window:
+
+```javascript
+window.addEventListener( 'message', function( event ) {
+       var data = JSON.parse( event.data );
+       if( data.namespace === 'reveal' && data.eventName ==='slidechanged' ) {
+               // Slide changed, see data.state for slide number
+       }
+} );
+```
+
+This cross-window messaging can be toggled on or off using configuration flags.
+
+```javascript
+Reveal.initialize({
+       // ...
+
+       // Exposes the reveal.js API through window.postMessage
+       postMessage: true,
+
+       // Dispatches all reveal.js events to the parent window through 
postMessage
+       postMessageEvents: false
+});
+```
+
+
+## PDF Export
+
+Presentations can be exported to PDF via a special print stylesheet. This 
feature requires that you use [Google Chrome](http://google.com/chrome) or 
[Chromium](https://www.chromium.org/Home) and to be serving the presentation 
from a web server.
+Here's an example of an exported presentation that's been uploaded to 
SlideShare: http://www.slideshare.net/hakimel/revealjs-300.
+
+### Separate pages for fragments
+[Fragments](#fragments) are printed on separate slides by default. Meaning if 
you have a slide with three fragment steps, it will generate three separate 
slides where the fragments appear incrementally.
+
+If you prefer printing all fragments in their visible states on the same slide 
you can set the `pdfSeparateFragments` config option to false.
+
+### Page size
+
+Export dimensions are inferred from the configured [presentation 
size](#presentation-size). Slides that are too tall to fit within a single page 
will expand onto multiple pages. You can limit how many pages a slide may 
expand onto using the `pdfMaxPagesPerSlide` config option, for example 
`Reveal.configure({ pdfMaxPagesPerSlide: 1 })` ensures that no slide ever grows 
to more than one printed page.
+
+### Print stylesheet
+
+To enable the PDF print capability in your presentation, the special print 
stylesheet at 
[/css/print/pdf.css](https://github.com/hakimel/reveal.js/blob/master/css/print/pdf.css)
 must be loaded. The default index.html file handles this for you when 
`print-pdf` is included in the query string. If you're using a different HTML 
template, you can add this to your HEAD:
+
+```html
+<script>
+       var link = document.createElement( 'link' );
+       link.rel = 'stylesheet';
+       link.type = 'text/css';
+       link.href = window.location.search.match( /print-pdf/gi ) ? 
'css/print/pdf.css' : 'css/print/paper.css';
+       document.getElementsByTagName( 'head' )[0].appendChild( link );
+</script>
+```
+
+### Instructions
+
+1. Open your presentation with `print-pdf` included in the query string i.e. 
http://localhost:8000/?print-pdf. You can test this with 
[revealjs.com?print-pdf](http://revealjs.com?print-pdf).
+  * If you want to include [speaker notes](#speaker-notes) in your export, you 
can append `showNotes=true` to the query string: 
http://localhost:8000/?print-pdf&showNotes=true
+1. Open the in-browser print dialog (CTRL/CMD+P).
+1. Change the **Destination** setting to **Save as PDF**.
+1. Change the **Layout** to **Landscape**.
+1. Change the **Margins** to **None**.
+1. Enable the **Background graphics** option.
+1. Click **Save**.
+
+![Chrome Print 
Settings](https://s3.amazonaws.com/hakim-static/reveal-js/pdf-print-settings-2.png)
+
+Alternatively you can use the 
[decktape](https://github.com/astefanutti/decktape) project.
+
+
+## Theming
+
+The framework comes with a few different themes included:
+
+- black: Black background, white text, blue links (default theme)
+- white: White background, black text, blue links
+- league: Gray background, white text, blue links (default theme for reveal.js 
< 3.0.0)
+- beige: Beige background, dark text, brown links
+- sky: Blue background, thin dark text, blue links
+- night: Black background, thick white text, orange links
+- serif: Cappuccino background, gray text, brown links
+- simple: White background, black text, blue links
+- solarized: Cream-colored background, dark green text, blue links
+
+Each theme is available as a separate stylesheet. To change theme you will 
need to replace **black** below with your desired theme name in index.html:
+
+```html
+<link rel="stylesheet" href="css/theme/black.css" id="theme">
+```
+
+If you want to add a theme of your own see the instructions here: 
[/css/theme/README.md](https://github.com/hakimel/reveal.js/blob/master/css/theme/README.md).
+
+
+## Speaker Notes
+
+reveal.js comes with a speaker notes plugin which can be used to present 
per-slide notes in a separate browser window. The notes window also gives you a 
preview of the next upcoming slide so it may be helpful even if you haven't 
written any notes. Press the »S« key on your keyboard to open the notes window.
+
+A speaker timer starts as soon as the speaker view is opened. You can reset it 
to 00:00:00 at any time by simply clicking/tapping on it.
+
+Notes are defined by appending an `<aside>` element to a slide as seen below. 
You can add the `data-markdown` attribute to the aside element if you prefer 
writing notes using Markdown.
+
+Alternatively you can add your notes in a `data-notes` attribute on the slide. 
Like `<section data-notes="Something important"></section>`.
+
+When used locally, this feature requires that reveal.js [runs from a local web 
server](#full-setup).
+
+```html
+<section>
+       <h2>Some Slide</h2>
+
+       <aside class="notes">
+               Oh hey, these are some notes. They'll be hidden in your 
presentation, but you can see them if you open the speaker notes window (hit 
»S« on your keyboard).
+       </aside>
+</section>
+```
+
+If you're using the external Markdown plugin, you can add notes with the help 
of a special delimiter:
+
+```html
+<section data-markdown="example.md" data-separator="^\n\n\n" 
data-separator-vertical="^\n\n" data-separator-notes="^Note:"></section>
+
+# Title
+## Sub-title
+
+Here is some content...
+
+Note:
+This will only display in the notes window.
+```
+
+#### Share and Print Speaker Notes
+
+Notes are only visible to the speaker inside of the speaker view. If you wish 
to share your notes with others you can initialize reveal.js with the 
`showNotes` configuration value set to `true`. Notes will appear along the 
bottom of the presentations.
+
+When `showNotes` is enabled notes are also included when you [export to 
PDF](https://github.com/hakimel/reveal.js#pdf-export). By default, notes are 
printed in a box on top of the slide. If you'd rather print them on a separate 
page, after the slide, set `showNotes: "separate-page"`.
+
+#### Speaker notes clock and timers
+
+The speaker notes window will also show:
+
+- Time elapsed since the beginning of the presentation.  If you hover the 
mouse above this section, a timer reset button will appear.
+- Current wall-clock time
+- (Optionally) a pacing timer which indicates whether the current pace of the 
presentation is on track for the right timing (shown in green), and if not, 
whether the presenter should speed up (shown in red) or has the luxury of 
slowing down (blue).
+
+The pacing timer can be enabled by configuring by the `defaultTiming` 
parameter in the `Reveal` configuration block, which specifies the number of 
seconds per slide.  120 can be a reasonable rule of thumb.  Timings can also be 
given per slide `<section>` by setting the `data-timing` attribute.  Both 
values are in numbers of seconds.
+
+
+## Server Side Speaker Notes
+
+In some cases it can be desirable to run notes on a separate device from the 
one you're presenting on. The Node.js-based notes plugin lets you do this using 
the same note definitions as its client side counterpart. Include the required 
scripts by adding the following dependencies:
+
+```javascript
+Reveal.initialize({
+       // ...
+
+       dependencies: [
+               { src: 'socket.io/socket.io.js', async: true },
+               { src: 'plugin/notes-server/client.js', async: true }
+       ]
+});
+```
+
+Then:
+
+1. Install [Node.js](http://nodejs.org/) (4.0.0 or later)
+2. Run `npm install`
+3. Run `node plugin/notes-server`
+
+
+## Multiplexing
+
+The multiplex plugin allows your audience to view the slides of the 
presentation you are controlling on their own phone, tablet or laptop. As the 
master presentation navigates the slides, all client presentations will update 
in real time. See a demo at 
[https://reveal-js-multiplex-ccjbegmaii.now.sh/](https://reveal-js-multiplex-ccjbegmaii.now.sh/).
+
+The multiplex plugin needs the following 3 things to operate:
+
+1. Master presentation that has control
+2. Client presentations that follow the master
+3. Socket.io server to broadcast events from the master to the clients
+
+#### Master presentation
+
+Served from a static file server accessible (preferably) only to the 
presenter. This need only be on your (the presenter's) computer. (It's safer to 
run the master presentation from your own computer, so if the venue's Internet 
goes down it doesn't stop the show.) An example would be to execute the 
following commands in the directory of your master presentation:
+
+1. `npm install node-static`
+2. `static`
+
+If you want to use the speaker notes plugin with your master presentation then 
make sure you have the speaker notes plugin configured correctly along with the 
configuration shown below, then execute `node plugin/notes-server` in the 
directory of your master presentation. The configuration below will cause it to 
connect to the socket.io server as a master, as well as launch your 
speaker-notes/static-file server.
+
+You can then access your master presentation at `http://localhost:1947`
+
+Example configuration:
+
+```javascript
+Reveal.initialize({
+       // other options...
+
+       multiplex: {
+               // Example values. To generate your own, see the socket.io 
server instructions.
+               secret: '13652805320794272084', // Obtained from the socket.io 
server. Gives this (the master) control of the presentation
+               id: '1ea875674b17ca76', // Obtained from socket.io server
+               url: 'https://reveal-js-multiplex-ccjbegmaii.now.sh' // 
Location of socket.io server
+       },
+
+       // Don't forget to add the dependencies
+       dependencies: [
+               { src: 
'//cdnjs.cloudflare.com/ajax/libs/socket.io/2.2.0/socket.io.js', async: true },
+               { src: 'plugin/multiplex/master.js', async: true },
+
+               // and if you want speaker notes
+               { src: 'plugin/notes-server/client.js', async: true }
+
+               // other dependencies...
+       ]
+});
+```
+
+#### Client presentation
+
+Served from a publicly accessible static file server. Examples include: GitHub 
Pages, Amazon S3, Dreamhost, Akamai, etc. The more reliable, the better. Your 
audience can then access the client presentation via 
`http://example.com/path/to/presentation/client/index.html`, with the 
configuration below causing them to connect to the socket.io server as clients.
+
+Example configuration:
+
+```javascript
+Reveal.initialize({
+       // other options...
+
+       multiplex: {
+               // Example values. To generate your own, see the socket.io 
server instructions.
+               secret: null, // null so the clients do not have control of the 
master presentation
+               id: '1ea875674b17ca76', // id, obtained from socket.io server
+               url: 'https://reveal-js-multiplex-ccjbegmaii.now.sh' // 
Location of socket.io server
+       },
+
+       // Don't forget to add the dependencies
+       dependencies: [
+               { src: 
'//cdnjs.cloudflare.com/ajax/libs/socket.io/2.2.0/socket.io.js', async: true },
+               { src: 'plugin/multiplex/client.js', async: true }
+
+               // other dependencies...
+       ]
+});
+```
+
+#### Socket.io server
+
+Server that receives the `slideChanged` events from the master presentation 
and broadcasts them out to the connected client presentations. This needs to be 
publicly accessible. You can run your own socket.io server with the commands:
+
+1. `npm install`
+2. `node plugin/multiplex`
+
+Or you can use the socket.io server at 
[https://reveal-js-multiplex-ccjbegmaii.now.sh/](https://reveal-js-multiplex-ccjbegmaii.now.sh/).
+
+You'll need to generate a unique secret and token pair for your master and 
client presentations. To do so, visit `http://example.com/token`, where 
`http://example.com` is the location of your socket.io server. Or if you're 
going to use the socket.io server at 
[https://reveal-js-multiplex-ccjbegmaii.now.sh/](https://reveal-js-multiplex-ccjbegmaii.now.sh/),
 visit 
[https://reveal-js-multiplex-ccjbegmaii.now.sh/token](https://reveal-js-multiplex-ccjbegmaii.now.sh/token).
+
+You are very welcome to point your presentations at the Socket.io server 
running at 
[https://reveal-js-multiplex-ccjbegmaii.now.sh/](https://reveal-js-multiplex-ccjbegmaii.now.sh/),
 but availability and stability are not guaranteed.
+
+For anything mission critical I recommend you run your own server. The easiest 
way to do this is by installing [now](https://zeit.co/now). With that 
installed, deploying your own Multiplex server is as easy running the following 
command from the reveal.js folder: `now plugin/multiplex`.
+
+##### socket.io server as file static server
+
+The socket.io server can play the role of static file server for your client 
presentation, as in the example at 
[https://reveal-js-multiplex-ccjbegmaii.now.sh/](https://reveal-js-multiplex-ccjbegmaii.now.sh/).
 (Open 
[https://reveal-js-multiplex-ccjbegmaii.now.sh/](https://reveal-js-multiplex-ccjbegmaii.now.sh/)
 in two browsers. Navigate through the slides on one, and the other will update 
to match.)
+
+Example configuration:
+
+```javascript
+Reveal.initialize({
+       // other options...
+
+       multiplex: {
+               // Example values. To generate your own, see the socket.io 
server instructions.
+               secret: null, // null so the clients do not have control of the 
master presentation
+               id: '1ea875674b17ca76', // id, obtained from socket.io server
+               url: 'example.com:80' // Location of your socket.io server
+       },
+
+       // Don't forget to add the dependencies
+       dependencies: [
+               { src: 
'//cdnjs.cloudflare.com/ajax/libs/socket.io/2.2.0/socket.io.js', async: true },
+               { src: 'plugin/multiplex/client.js', async: true }
+
+               // other dependencies...
+       ]
+```
+
+It can also play the role of static file server for your master presentation 
and client presentations at the same time (as long as you don't want to use 
speaker notes). (Open 
[https://reveal-js-multiplex-ccjbegmaii.now.sh/](https://reveal-js-multiplex-ccjbegmaii.now.sh/)
 in two browsers. Navigate through the slides on one, and the other will update 
to match. Navigate through the slides on the second, and the first will update 
to match.) This is probably not desirable, because you don't w [...]
+
+Example configuration:
+
+```javascript
+Reveal.initialize({
+       // other options...
+
+       multiplex: {
+               // Example values. To generate your own, see the socket.io 
server instructions.
+               secret: '13652805320794272084', // Obtained from the socket.io 
server. Gives this (the master) control of the presentation
+               id: '1ea875674b17ca76', // Obtained from socket.io server
+               url: 'example.com:80' // Location of your socket.io server
+       },
+
+       // Don't forget to add the dependencies
+       dependencies: [
+               { src: 
'//cdnjs.cloudflare.com/ajax/libs/socket.io/2.2.0/socket.io.js', async: true },
+               { src: 'plugin/multiplex/master.js', async: true },
+               { src: 'plugin/multiplex/client.js', async: true }
+
+               // other dependencies...
+       ]
+});
+```
+
+
+## MathJax
+
+If you want to display math equations in your presentation you can easily do 
so by including this plugin. The plugin is a very thin wrapper around the 
[MathJax](http://www.mathjax.org/) library. To use it you'll need to include it 
as a reveal.js dependency, [find our more about dependencies 
here](#dependencies).
+
+The plugin defaults to using [LaTeX](http://en.wikipedia.org/wiki/LaTeX) but 
that can be adjusted through the `math` configuration object. Note that MathJax 
is loaded from a remote server. If you want to use it offline you'll need to 
download a copy of the library and adjust the `mathjax` configuration value.
+
+Below is an example of how the plugin can be configured. If you don't intend 
to change these values you do not need to include the `math` config object at 
all.
+
+```js
+Reveal.initialize({
+       // other options ...
+
+       math: {
+               mathjax: 
'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js',
+               config: 'TeX-AMS_HTML-full'  // See 
http://docs.mathjax.org/en/latest/config-files.html
+               // pass other options into `MathJax.Hub.Config()`
+               TeX: { Macros: macros }
+       },
+
+       dependencies: [
+               { src: 'plugin/math/math.js', async: true }
+       ]
+});
+```
+
+Read MathJax's documentation if you need [HTTPS 
delivery](http://docs.mathjax.org/en/latest/start.html#secure-access-to-the-cdn)
 or serving of [specific 
versions](http://docs.mathjax.org/en/latest/configuration.html#loading-mathjax-from-the-cdn)
 for stability.
+
+#### MathJax in Markdown
+If you want to include math inside of a presentation written in Markdown you 
need to wrap the formula in backticks. This prevents syntax conflicts between 
LaTeX and Markdown. For example:
+
+```
+`$$ J(\theta_0,\theta_1) = \sum_{i=0} $$`
+```
+
+## License
+
+MIT licensed
+
+Copyright (C) 2019 Hakim El Hattab, http://hakim.se
diff --git a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/bower.json 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/bower.json
new file mode 100644
index 0000000..036d276
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/bower.json
@@ -0,0 +1,24 @@
+{
+  "name": "reveal.js",
+  "version": "3.8.0",
+  "main": [
+    "js/reveal.js",
+    "css/reveal.css"
+  ],
+  "homepage": "http://revealjs.com";,
+  "license": "MIT",
+  "description": "The HTML Presentation Framework",
+  "authors": [
+    "Hakim El Hattab <address@hidden>"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/hakimel/reveal.js.git"
+  },
+  "ignore": [
+    "**/.*",
+    "node_modules",
+    "bower_components",
+    "test"
+  ]
+}
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/print/paper.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/print/paper.css
new file mode 100644
index 0000000..27d19dd
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/print/paper.css
@@ -0,0 +1,203 @@
+/* Default Print Stylesheet Template
+   by Rob Glazebrook of CSSnewbie.com
+   Last Updated: June 4, 2008
+
+   Feel free (nay, compelled) to edit, append, and
+   manipulate this file as you see fit. */
+
+
+@media print {
+
+       /* SECTION 1: Set default width, margin, float, and
+          background. This prevents elements from extending
+          beyond the edge of the printed page, and prevents
+          unnecessary background images from printing */
+       html {
+               background: #fff;
+               width: auto;
+               height: auto;
+               overflow: visible;
+       }
+       body {
+               background: #fff;
+               font-size: 20pt;
+               width: auto;
+               height: auto;
+               border: 0;
+               margin: 0 5%;
+               padding: 0;
+               overflow: visible;
+               float: none !important;
+       }
+
+       /* SECTION 2: Remove any elements not needed in print.
+          This would include navigation, ads, sidebars, etc. */
+       .nestedarrow,
+       .controls,
+       .fork-reveal,
+       .share-reveal,
+       .state-background,
+       .reveal .progress,
+       .reveal .backgrounds,
+       .reveal .slide-number {
+               display: none !important;
+       }
+
+       /* SECTION 3: Set body font face, size, and color.
+          Consider using a serif font for readability. */
+       body, p, td, li, div {
+               font-size: 20pt!important;
+               font-family: Georgia, "Times New Roman", Times, serif 
!important;
+               color: #000;
+       }
+
+       /* SECTION 4: Set heading font face, sizes, and color.
+          Differentiate your headings from your body text.
+          Perhaps use a large sans-serif for distinction. */
+       h1,h2,h3,h4,h5,h6 {
+               color: #000!important;
+               height: auto;
+               line-height: normal;
+               font-family: Georgia, "Times New Roman", Times, serif 
!important;
+               text-shadow: 0 0 0 #000 !important;
+               text-align: left;
+               letter-spacing: normal;
+       }
+       /* Need to reduce the size of the fonts for printing */
+       h1 { font-size: 28pt !important;  }
+       h2 { font-size: 24pt !important; }
+       h3 { font-size: 22pt !important; }
+       h4 { font-size: 22pt !important; font-variant: small-caps; }
+       h5 { font-size: 21pt !important; }
+       h6 { font-size: 20pt !important; font-style: italic; }
+
+       /* SECTION 5: Make hyperlinks more usable.
+          Ensure links are underlined, and consider appending
+          the URL to the end of the link for usability. */
+       a:link,
+       a:visited {
+               color: #000 !important;
+               font-weight: bold;
+               text-decoration: underline;
+       }
+       /*
+       .reveal a:link:after,
+       .reveal a:visited:after {
+               content: " (" attr(href) ") ";
+               color: #222 !important;
+               font-size: 90%;
+       }
+       */
+
+
+       /* SECTION 6: more reveal.js specific additions by @skypanther */
+       ul, ol, div, p {
+               visibility: visible;
+               position: static;
+               width: auto;
+               height: auto;
+               display: block;
+               overflow: visible;
+               margin: 0;
+               text-align: left !important;
+       }
+       .reveal pre,
+       .reveal table {
+               margin-left: 0;
+               margin-right: 0;
+       }
+       .reveal pre code {
+               padding: 20px;
+               border: 1px solid #ddd;
+       }
+       .reveal blockquote {
+               margin: 20px 0;
+       }
+       .reveal .slides {
+               position: static !important;
+               width: auto !important;
+               height: auto !important;
+
+               left: 0 !important;
+               top: 0 !important;
+               margin-left: 0 !important;
+               margin-top: 0 !important;
+               padding: 0 !important;
+               zoom: 1 !important;
+
+               overflow: visible !important;
+               display: block !important;
+
+               text-align: left !important;
+               -webkit-perspective: none;
+                  -moz-perspective: none;
+                   -ms-perspective: none;
+                       perspective: none;
+
+               -webkit-perspective-origin: 50% 50%;
+                  -moz-perspective-origin: 50% 50%;
+                   -ms-perspective-origin: 50% 50%;
+                       perspective-origin: 50% 50%;
+       }
+       .reveal .slides section {
+               visibility: visible !important;
+               position: static !important;
+               width: auto !important;
+               height: auto !important;
+               display: block !important;
+               overflow: visible !important;
+
+               left: 0 !important;
+               top: 0 !important;
+               margin-left: 0 !important;
+               margin-top: 0 !important;
+               padding: 60px 20px !important;
+               z-index: auto !important;
+
+               opacity: 1 !important;
+
+               page-break-after: always !important;
+
+               -webkit-transform-style: flat !important;
+                  -moz-transform-style: flat !important;
+                   -ms-transform-style: flat !important;
+                       transform-style: flat !important;
+
+               -webkit-transform: none !important;
+                  -moz-transform: none !important;
+                   -ms-transform: none !important;
+                       transform: none !important;
+
+               -webkit-transition: none !important;
+                  -moz-transition: none !important;
+                   -ms-transition: none !important;
+                       transition: none !important;
+       }
+       .reveal .slides section.stack {
+               padding: 0 !important;
+       }
+       .reveal section:last-of-type {
+               page-break-after: avoid !important;
+       }
+       .reveal section .fragment {
+               opacity: 1 !important;
+               visibility: visible !important;
+
+               -webkit-transform: none !important;
+                  -moz-transform: none !important;
+                   -ms-transform: none !important;
+                       transform: none !important;
+       }
+       .reveal section img {
+               display: block;
+               margin: 15px 0px;
+               background: rgba(255,255,255,1);
+               border: 1px solid #666;
+               box-shadow: none;
+       }
+
+       .reveal section small {
+               font-size: 0.8em;
+       }
+
+}
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/print/pdf.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/print/pdf.css
new file mode 100644
index 0000000..752d955
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/print/pdf.css
@@ -0,0 +1,164 @@
+/**
+ * This stylesheet is used to print reveal.js
+ * presentations to PDF.
+ *
+ * https://github.com/hakimel/reveal.js#pdf-export
+ */
+
+* {
+       -webkit-print-color-adjust: exact;
+}
+
+body {
+       margin: 0 auto !important;
+       border: 0;
+       padding: 0;
+       float: none !important;
+       overflow: visible;
+}
+
+html {
+       width: 100%;
+       height: 100%;
+       overflow: visible;
+}
+
+/* Remove any elements not needed in print. */
+.nestedarrow,
+.reveal .controls,
+.reveal .progress,
+.reveal .playback,
+.reveal.overview,
+.fork-reveal,
+.share-reveal,
+.state-background {
+       display: none !important;
+}
+
+h1, h2, h3, h4, h5, h6 {
+       text-shadow: 0 0 0 #000 !important;
+}
+
+.reveal pre code {
+       overflow: hidden !important;
+       font-family: Courier, 'Courier New', monospace !important;
+}
+
+ul, ol, div, p {
+       visibility: visible;
+       position: static;
+       width: auto;
+       height: auto;
+       display: block;
+       overflow: visible;
+       margin: auto;
+}
+.reveal {
+       width: auto !important;
+       height: auto !important;
+       overflow: hidden !important;
+}
+.reveal .slides {
+       position: static;
+       width: 100% !important;
+       height: auto !important;
+       zoom: 1 !important;
+
+       left: auto;
+       top: auto;
+       margin: 0 !important;
+       padding: 0 !important;
+
+       overflow: visible;
+       display: block;
+
+       perspective: none;
+       perspective-origin: 50% 50%;
+}
+
+.reveal .slides .pdf-page {
+       position: relative;
+       overflow: hidden;
+       z-index: 1;
+
+       page-break-after: always;
+}
+
+.reveal .slides section {
+       visibility: visible !important;
+       display: block !important;
+       position: absolute !important;
+
+       margin: 0 !important;
+       padding: 0 !important;
+       box-sizing: border-box !important;
+       min-height: 1px;
+
+       opacity: 1 !important;
+
+       transform-style: flat !important;
+       transform: none !important;
+}
+
+.reveal section.stack {
+       position: relative !important;
+       margin: 0 !important;
+       padding: 0 !important;
+       page-break-after: avoid !important;
+       height: auto !important;
+       min-height: auto !important;
+}
+
+.reveal img {
+       box-shadow: none;
+}
+
+.reveal .roll {
+       overflow: visible;
+       line-height: 1em;
+}
+
+/* Slide backgrounds are placed inside of their slide when exporting to PDF */
+.reveal .slide-background {
+       display: block !important;
+       position: absolute;
+       top: 0;
+       left: 0;
+       width: 100%;
+       height: 100%;
+       z-index: auto !important;
+}
+
+/* Display slide speaker notes when 'showNotes' is enabled */
+.reveal.show-notes {
+       max-width: none;
+       max-height: none;
+}
+.reveal .speaker-notes-pdf {
+       display: block;
+       width: 100%;
+       height: auto;
+       max-height: none;
+       top: auto;
+       right: auto;
+       bottom: auto;
+       left: auto;
+       z-index: 100;
+}
+
+/* Layout option which makes notes appear on a separate page */
+.reveal .speaker-notes-pdf[data-layout="separate-page"] {
+       position: relative;
+       color: inherit;
+       background-color: transparent;
+       padding: 20px;
+       page-break-after: always;
+       border: 0;
+}
+
+/* Display slide numbers when 'slideNumber' is enabled */
+.reveal .slide-number-pdf {
+       display: block;
+       position: absolute;
+       font-size: 14px;
+}
diff --git a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/reset.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/reset.css
new file mode 100644
index 0000000..e238539
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/reset.css
@@ -0,0 +1,30 @@
+/* http://meyerweb.com/eric/tools/css/reset/
+   v4.0 | 20180602
+   License: none (public domain)
+*/
+
+html, body, div, span, applet, object, iframe,
+h1, h2, h3, h4, h5, h6, p, blockquote, pre,
+a, abbr, acronym, address, big, cite, code,
+del, dfn, em, img, ins, kbd, q, s, samp,
+small, strike, strong, sub, sup, tt, var,
+b, u, i, center,
+dl, dt, dd, ol, ul, li,
+fieldset, form, label, legend,
+table, caption, tbody, tfoot, thead, tr, th, td,
+article, aside, canvas, details, embed,
+figure, figcaption, footer, header, hgroup,
+main, menu, nav, output, ruby, section, summary,
+time, mark, audio, video {
+  margin: 0;
+  padding: 0;
+  border: 0;
+  font-size: 100%;
+  font: inherit;
+  vertical-align: baseline;
+}
+/* HTML5 display-role reset for older browsers */
+article, aside, details, figcaption, figure,
+footer, header, hgroup, main, menu, nav, section {
+  display: block;
+}
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/reveal.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/reveal.css
new file mode 100644
index 0000000..1b9651b
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/reveal.css
@@ -0,0 +1,1598 @@
+/*!
+ * reveal.js
+ * http://revealjs.com
+ * MIT licensed
+ *
+ * Copyright (C) 2019 Hakim El Hattab, http://hakim.se
+ */
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+html {
+  width: 100%;
+  height: 100%;
+  height: 100vh;
+  height: calc( var(--vh, 1vh) * 100);
+  overflow: hidden; }
+
+body {
+  height: 100%;
+  overflow: hidden;
+  position: relative;
+  line-height: 1;
+  margin: 0;
+  background-color: #fff;
+  color: #000; }
+
+/*********************************************
+ * VIEW FRAGMENTS
+ *********************************************/
+.reveal .slides section .fragment {
+  opacity: 0;
+  visibility: hidden;
+  transition: all .2s ease; }
+  .reveal .slides section .fragment.visible {
+    opacity: 1;
+    visibility: inherit; }
+
+.reveal .slides section .fragment.grow {
+  opacity: 1;
+  visibility: inherit; }
+  .reveal .slides section .fragment.grow.visible {
+    -webkit-transform: scale(1.3);
+            transform: scale(1.3); }
+
+.reveal .slides section .fragment.shrink {
+  opacity: 1;
+  visibility: inherit; }
+  .reveal .slides section .fragment.shrink.visible {
+    -webkit-transform: scale(0.7);
+            transform: scale(0.7); }
+
+.reveal .slides section .fragment.zoom-in {
+  -webkit-transform: scale(0.1);
+          transform: scale(0.1); }
+  .reveal .slides section .fragment.zoom-in.visible {
+    -webkit-transform: none;
+            transform: none; }
+
+.reveal .slides section .fragment.fade-out {
+  opacity: 1;
+  visibility: inherit; }
+  .reveal .slides section .fragment.fade-out.visible {
+    opacity: 0;
+    visibility: hidden; }
+
+.reveal .slides section .fragment.semi-fade-out {
+  opacity: 1;
+  visibility: inherit; }
+  .reveal .slides section .fragment.semi-fade-out.visible {
+    opacity: 0.5;
+    visibility: inherit; }
+
+.reveal .slides section .fragment.strike {
+  opacity: 1;
+  visibility: inherit; }
+  .reveal .slides section .fragment.strike.visible {
+    text-decoration: line-through; }
+
+.reveal .slides section .fragment.fade-up {
+  -webkit-transform: translate(0, 20%);
+          transform: translate(0, 20%); }
+  .reveal .slides section .fragment.fade-up.visible {
+    -webkit-transform: translate(0, 0);
+            transform: translate(0, 0); }
+
+.reveal .slides section .fragment.fade-down {
+  -webkit-transform: translate(0, -20%);
+          transform: translate(0, -20%); }
+  .reveal .slides section .fragment.fade-down.visible {
+    -webkit-transform: translate(0, 0);
+            transform: translate(0, 0); }
+
+.reveal .slides section .fragment.fade-right {
+  -webkit-transform: translate(-20%, 0);
+          transform: translate(-20%, 0); }
+  .reveal .slides section .fragment.fade-right.visible {
+    -webkit-transform: translate(0, 0);
+            transform: translate(0, 0); }
+
+.reveal .slides section .fragment.fade-left {
+  -webkit-transform: translate(20%, 0);
+          transform: translate(20%, 0); }
+  .reveal .slides section .fragment.fade-left.visible {
+    -webkit-transform: translate(0, 0);
+            transform: translate(0, 0); }
+
+.reveal .slides section .fragment.fade-in-then-out,
+.reveal .slides section .fragment.current-visible {
+  opacity: 0;
+  visibility: hidden; }
+  .reveal .slides section .fragment.fade-in-then-out.current-fragment,
+  .reveal .slides section .fragment.current-visible.current-fragment {
+    opacity: 1;
+    visibility: inherit; }
+
+.reveal .slides section .fragment.fade-in-then-semi-out {
+  opacity: 0;
+  visibility: hidden; }
+  .reveal .slides section .fragment.fade-in-then-semi-out.visible {
+    opacity: 0.5;
+    visibility: inherit; }
+  .reveal .slides section .fragment.fade-in-then-semi-out.current-fragment {
+    opacity: 1;
+    visibility: inherit; }
+
+.reveal .slides section .fragment.highlight-red,
+.reveal .slides section .fragment.highlight-current-red,
+.reveal .slides section .fragment.highlight-green,
+.reveal .slides section .fragment.highlight-current-green,
+.reveal .slides section .fragment.highlight-blue,
+.reveal .slides section .fragment.highlight-current-blue {
+  opacity: 1;
+  visibility: inherit; }
+
+.reveal .slides section .fragment.highlight-red.visible {
+  color: #ff2c2d; }
+
+.reveal .slides section .fragment.highlight-green.visible {
+  color: #17ff2e; }
+
+.reveal .slides section .fragment.highlight-blue.visible {
+  color: #1b91ff; }
+
+.reveal .slides section .fragment.highlight-current-red.current-fragment {
+  color: #ff2c2d; }
+
+.reveal .slides section .fragment.highlight-current-green.current-fragment {
+  color: #17ff2e; }
+
+.reveal .slides section .fragment.highlight-current-blue.current-fragment {
+  color: #1b91ff; }
+
+/*********************************************
+ * DEFAULT ELEMENT STYLES
+ *********************************************/
+/* Fixes issue in Chrome where italic fonts did not appear when printing to 
PDF */
+.reveal:after {
+  content: '';
+  font-style: italic; }
+
+.reveal iframe {
+  z-index: 1; }
+
+/** Prevents layering issues in certain browser/transition combinations */
+.reveal a {
+  position: relative; }
+
+.reveal .stretch {
+  max-width: none;
+  max-height: none; }
+
+.reveal pre.stretch code {
+  height: 100%;
+  max-height: 100%;
+  box-sizing: border-box; }
+
+/*********************************************
+ * CONTROLS
+ *********************************************/
+@-webkit-keyframes bounce-right {
+  0%, 10%, 25%, 40%, 50% {
+    -webkit-transform: translateX(0);
+            transform: translateX(0); }
+  20% {
+    -webkit-transform: translateX(10px);
+            transform: translateX(10px); }
+  30% {
+    -webkit-transform: translateX(-5px);
+            transform: translateX(-5px); } }
+@keyframes bounce-right {
+  0%, 10%, 25%, 40%, 50% {
+    -webkit-transform: translateX(0);
+            transform: translateX(0); }
+  20% {
+    -webkit-transform: translateX(10px);
+            transform: translateX(10px); }
+  30% {
+    -webkit-transform: translateX(-5px);
+            transform: translateX(-5px); } }
+
+@-webkit-keyframes bounce-down {
+  0%, 10%, 25%, 40%, 50% {
+    -webkit-transform: translateY(0);
+            transform: translateY(0); }
+  20% {
+    -webkit-transform: translateY(10px);
+            transform: translateY(10px); }
+  30% {
+    -webkit-transform: translateY(-5px);
+            transform: translateY(-5px); } }
+
+@keyframes bounce-down {
+  0%, 10%, 25%, 40%, 50% {
+    -webkit-transform: translateY(0);
+            transform: translateY(0); }
+  20% {
+    -webkit-transform: translateY(10px);
+            transform: translateY(10px); }
+  30% {
+    -webkit-transform: translateY(-5px);
+            transform: translateY(-5px); } }
+
+.reveal .controls {
+  display: none;
+  position: absolute;
+  top: auto;
+  bottom: 12px;
+  right: 12px;
+  left: auto;
+  z-index: 1;
+  color: #000;
+  pointer-events: none;
+  font-size: 10px; }
+  .reveal .controls button {
+    position: absolute;
+    padding: 0;
+    background-color: transparent;
+    border: 0;
+    outline: 0;
+    cursor: pointer;
+    color: currentColor;
+    -webkit-transform: scale(0.9999);
+            transform: scale(0.9999);
+    transition: color 0.2s ease, opacity 0.2s ease, -webkit-transform 0.2s 
ease;
+    transition: color 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
+    z-index: 2;
+    pointer-events: auto;
+    font-size: inherit;
+    visibility: hidden;
+    opacity: 0;
+    -webkit-appearance: none;
+    -webkit-tap-highlight-color: rgba(0, 0, 0, 0); }
+  .reveal .controls .controls-arrow:before,
+  .reveal .controls .controls-arrow:after {
+    content: '';
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 2.6em;
+    height: 0.5em;
+    border-radius: 0.25em;
+    background-color: currentColor;
+    transition: all 0.15s ease, background-color 0.8s ease;
+    -webkit-transform-origin: 0.2em 50%;
+            transform-origin: 0.2em 50%;
+    will-change: transform; }
+  .reveal .controls .controls-arrow {
+    position: relative;
+    width: 3.6em;
+    height: 3.6em; }
+    .reveal .controls .controls-arrow:before {
+      -webkit-transform: translateX(0.5em) translateY(1.55em) rotate(45deg);
+              transform: translateX(0.5em) translateY(1.55em) rotate(45deg); }
+    .reveal .controls .controls-arrow:after {
+      -webkit-transform: translateX(0.5em) translateY(1.55em) rotate(-45deg);
+              transform: translateX(0.5em) translateY(1.55em) rotate(-45deg); }
+    .reveal .controls .controls-arrow:hover:before {
+      -webkit-transform: translateX(0.5em) translateY(1.55em) rotate(40deg);
+              transform: translateX(0.5em) translateY(1.55em) rotate(40deg); }
+    .reveal .controls .controls-arrow:hover:after {
+      -webkit-transform: translateX(0.5em) translateY(1.55em) rotate(-40deg);
+              transform: translateX(0.5em) translateY(1.55em) rotate(-40deg); }
+    .reveal .controls .controls-arrow:active:before {
+      -webkit-transform: translateX(0.5em) translateY(1.55em) rotate(36deg);
+              transform: translateX(0.5em) translateY(1.55em) rotate(36deg); }
+    .reveal .controls .controls-arrow:active:after {
+      -webkit-transform: translateX(0.5em) translateY(1.55em) rotate(-36deg);
+              transform: translateX(0.5em) translateY(1.55em) rotate(-36deg); }
+  .reveal .controls .navigate-left {
+    right: 6.4em;
+    bottom: 3.2em;
+    -webkit-transform: translateX(-10px);
+            transform: translateX(-10px); }
+  .reveal .controls .navigate-right {
+    right: 0;
+    bottom: 3.2em;
+    -webkit-transform: translateX(10px);
+            transform: translateX(10px); }
+    .reveal .controls .navigate-right .controls-arrow {
+      -webkit-transform: rotate(180deg);
+              transform: rotate(180deg); }
+    .reveal .controls .navigate-right.highlight {
+      -webkit-animation: bounce-right 2s 50 both ease-out;
+              animation: bounce-right 2s 50 both ease-out; }
+  .reveal .controls .navigate-up {
+    right: 3.2em;
+    bottom: 6.4em;
+    -webkit-transform: translateY(-10px);
+            transform: translateY(-10px); }
+    .reveal .controls .navigate-up .controls-arrow {
+      -webkit-transform: rotate(90deg);
+              transform: rotate(90deg); }
+  .reveal .controls .navigate-down {
+    right: 3.2em;
+    bottom: 0;
+    -webkit-transform: translateY(10px);
+            transform: translateY(10px); }
+    .reveal .controls .navigate-down .controls-arrow {
+      -webkit-transform: rotate(-90deg);
+              transform: rotate(-90deg); }
+    .reveal .controls .navigate-down.highlight {
+      -webkit-animation: bounce-down 2s 50 both ease-out;
+              animation: bounce-down 2s 50 both ease-out; }
+  .reveal .controls[data-controls-back-arrows="faded"] .navigate-left.enabled,
+  .reveal .controls[data-controls-back-arrows="faded"] .navigate-up.enabled {
+    opacity: 0.3; }
+    .reveal .controls[data-controls-back-arrows="faded"] 
.navigate-left.enabled:hover,
+    .reveal .controls[data-controls-back-arrows="faded"] 
.navigate-up.enabled:hover {
+      opacity: 1; }
+  .reveal .controls[data-controls-back-arrows="hidden"] .navigate-left.enabled,
+  .reveal .controls[data-controls-back-arrows="hidden"] .navigate-up.enabled {
+    opacity: 0;
+    visibility: hidden; }
+  .reveal .controls .enabled {
+    visibility: visible;
+    opacity: 0.9;
+    cursor: pointer;
+    -webkit-transform: none;
+            transform: none; }
+  .reveal .controls .enabled.fragmented {
+    opacity: 0.5; }
+  .reveal .controls .enabled:hover,
+  .reveal .controls .enabled.fragmented:hover {
+    opacity: 1; }
+
+.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-up,
+.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-down {
+  display: none; }
+
+.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-left,
+.reveal:not(.has-vertical-slides) .controls .navigate-left {
+  bottom: 1.4em;
+  right: 5.5em; }
+
+.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-right,
+.reveal:not(.has-vertical-slides) .controls .navigate-right {
+  bottom: 1.4em;
+  right: 0.5em; }
+
+.reveal:not(.has-horizontal-slides) .controls .navigate-up {
+  right: 1.4em;
+  bottom: 5em; }
+
+.reveal:not(.has-horizontal-slides) .controls .navigate-down {
+  right: 1.4em;
+  bottom: 0.5em; }
+
+.reveal.has-dark-background .controls {
+  color: #fff; }
+
+.reveal.has-light-background .controls {
+  color: #000; }
+
+.reveal.no-hover .controls .controls-arrow:hover:before,
+.reveal.no-hover .controls .controls-arrow:active:before {
+  -webkit-transform: translateX(0.5em) translateY(1.55em) rotate(45deg);
+          transform: translateX(0.5em) translateY(1.55em) rotate(45deg); }
+
+.reveal.no-hover .controls .controls-arrow:hover:after,
+.reveal.no-hover .controls .controls-arrow:active:after {
+  -webkit-transform: translateX(0.5em) translateY(1.55em) rotate(-45deg);
+          transform: translateX(0.5em) translateY(1.55em) rotate(-45deg); }
+
+@media screen and (min-width: 500px) {
+  .reveal .controls[data-controls-layout="edges"] {
+    top: 0;
+    right: 0;
+    bottom: 0;
+    left: 0; }
+  .reveal .controls[data-controls-layout="edges"] .navigate-left,
+  .reveal .controls[data-controls-layout="edges"] .navigate-right,
+  .reveal .controls[data-controls-layout="edges"] .navigate-up,
+  .reveal .controls[data-controls-layout="edges"] .navigate-down {
+    bottom: auto;
+    right: auto; }
+  .reveal .controls[data-controls-layout="edges"] .navigate-left {
+    top: 50%;
+    left: 8px;
+    margin-top: -1.8em; }
+  .reveal .controls[data-controls-layout="edges"] .navigate-right {
+    top: 50%;
+    right: 8px;
+    margin-top: -1.8em; }
+  .reveal .controls[data-controls-layout="edges"] .navigate-up {
+    top: 8px;
+    left: 50%;
+    margin-left: -1.8em; }
+  .reveal .controls[data-controls-layout="edges"] .navigate-down {
+    bottom: 8px;
+    left: 50%;
+    margin-left: -1.8em; } }
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+.reveal .progress {
+  position: absolute;
+  display: none;
+  height: 3px;
+  width: 100%;
+  bottom: 0;
+  left: 0;
+  z-index: 10;
+  background-color: rgba(0, 0, 0, 0.2);
+  color: #fff; }
+
+.reveal .progress:after {
+  content: '';
+  display: block;
+  position: absolute;
+  height: 10px;
+  width: 100%;
+  top: -10px; }
+
+.reveal .progress span {
+  display: block;
+  height: 100%;
+  width: 0px;
+  background-color: currentColor;
+  transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+/*********************************************
+ * SLIDE NUMBER
+ *********************************************/
+.reveal .slide-number {
+  position: absolute;
+  display: block;
+  right: 8px;
+  bottom: 8px;
+  z-index: 31;
+  font-family: Helvetica, sans-serif;
+  font-size: 12px;
+  line-height: 1;
+  color: #fff;
+  background-color: rgba(0, 0, 0, 0.4);
+  padding: 5px; }
+
+.reveal .slide-number a {
+  color: currentColor; }
+
+.reveal .slide-number-delimiter {
+  margin: 0 3px; }
+
+/*********************************************
+ * SLIDES
+ *********************************************/
+.reveal {
+  position: relative;
+  width: 100%;
+  height: 100%;
+  overflow: hidden;
+  -ms-touch-action: pinch-zoom;
+      touch-action: pinch-zoom; }
+
+.reveal .slides {
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  margin: auto;
+  pointer-events: none;
+  overflow: visible;
+  z-index: 1;
+  text-align: center;
+  -webkit-perspective: 600px;
+          perspective: 600px;
+  -webkit-perspective-origin: 50% 40%;
+          perspective-origin: 50% 40%; }
+
+.reveal .slides > section {
+  -webkit-perspective: 600px;
+          perspective: 600px; }
+
+.reveal .slides > section,
+.reveal .slides > section > section {
+  display: none;
+  position: absolute;
+  width: 100%;
+  padding: 20px 0px;
+  pointer-events: auto;
+  z-index: 10;
+  -webkit-transform-style: flat;
+          transform-style: flat;
+  transition: -webkit-transform-origin 800ms cubic-bezier(0.26, 0.86, 0.44, 
0.985), -webkit-transform 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), 
visibility 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), opacity 800ms 
cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  transition: transform-origin 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), 
transform 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), visibility 800ms 
cubic-bezier(0.26, 0.86, 0.44, 0.985), opacity 800ms cubic-bezier(0.26, 0.86, 
0.44, 0.985); }
+
+/* Global transition speed settings */
+.reveal[data-transition-speed="fast"] .slides section {
+  transition-duration: 400ms; }
+
+.reveal[data-transition-speed="slow"] .slides section {
+  transition-duration: 1200ms; }
+
+/* Slide-specific transition speed overrides */
+.reveal .slides section[data-transition-speed="fast"] {
+  transition-duration: 400ms; }
+
+.reveal .slides section[data-transition-speed="slow"] {
+  transition-duration: 1200ms; }
+
+.reveal .slides > section.stack {
+  padding-top: 0;
+  padding-bottom: 0;
+  pointer-events: none;
+  height: 100%; }
+
+.reveal .slides > section.present,
+.reveal .slides > section > section.present {
+  display: block;
+  z-index: 11;
+  opacity: 1; }
+
+.reveal .slides > section:empty,
+.reveal .slides > section > section:empty,
+.reveal .slides > section[data-background-interactive],
+.reveal .slides > section > section[data-background-interactive] {
+  pointer-events: none; }
+
+.reveal.center,
+.reveal.center .slides,
+.reveal.center .slides section {
+  min-height: 0 !important; }
+
+/* Don't allow interaction with invisible slides */
+.reveal .slides > section.future,
+.reveal .slides > section > section.future,
+.reveal .slides > section.past,
+.reveal .slides > section > section.past {
+  pointer-events: none; }
+
+.reveal.overview .slides > section,
+.reveal.overview .slides > section > section {
+  pointer-events: auto; }
+
+.reveal .slides > section.past,
+.reveal .slides > section.future,
+.reveal .slides > section > section.past,
+.reveal .slides > section > section.future {
+  opacity: 0; }
+
+/*********************************************
+ * Mixins for readability of transitions
+ *********************************************/
+/*********************************************
+ * SLIDE TRANSITION
+ * Aliased 'linear' for backwards compatibility
+ *********************************************/
+.reveal.slide section {
+  -webkit-backface-visibility: hidden;
+          backface-visibility: hidden; }
+
+.reveal .slides > section[data-transition=slide].past,
+.reveal .slides > section[data-transition~=slide-out].past,
+.reveal.slide .slides > section:not([data-transition]).past {
+  -webkit-transform: translate(-150%, 0);
+          transform: translate(-150%, 0); }
+
+.reveal .slides > section[data-transition=slide].future,
+.reveal .slides > section[data-transition~=slide-in].future,
+.reveal.slide .slides > section:not([data-transition]).future {
+  -webkit-transform: translate(150%, 0);
+          transform: translate(150%, 0); }
+
+.reveal .slides > section > section[data-transition=slide].past,
+.reveal .slides > section > section[data-transition~=slide-out].past,
+.reveal.slide .slides > section > section:not([data-transition]).past {
+  -webkit-transform: translate(0, -150%);
+          transform: translate(0, -150%); }
+
+.reveal .slides > section > section[data-transition=slide].future,
+.reveal .slides > section > section[data-transition~=slide-in].future,
+.reveal.slide .slides > section > section:not([data-transition]).future {
+  -webkit-transform: translate(0, 150%);
+          transform: translate(0, 150%); }
+
+.reveal.linear section {
+  -webkit-backface-visibility: hidden;
+          backface-visibility: hidden; }
+
+.reveal .slides > section[data-transition=linear].past,
+.reveal .slides > section[data-transition~=linear-out].past,
+.reveal.linear .slides > section:not([data-transition]).past {
+  -webkit-transform: translate(-150%, 0);
+          transform: translate(-150%, 0); }
+
+.reveal .slides > section[data-transition=linear].future,
+.reveal .slides > section[data-transition~=linear-in].future,
+.reveal.linear .slides > section:not([data-transition]).future {
+  -webkit-transform: translate(150%, 0);
+          transform: translate(150%, 0); }
+
+.reveal .slides > section > section[data-transition=linear].past,
+.reveal .slides > section > section[data-transition~=linear-out].past,
+.reveal.linear .slides > section > section:not([data-transition]).past {
+  -webkit-transform: translate(0, -150%);
+          transform: translate(0, -150%); }
+
+.reveal .slides > section > section[data-transition=linear].future,
+.reveal .slides > section > section[data-transition~=linear-in].future,
+.reveal.linear .slides > section > section:not([data-transition]).future {
+  -webkit-transform: translate(0, 150%);
+          transform: translate(0, 150%); }
+
+/*********************************************
+ * CONVEX TRANSITION
+ * Aliased 'default' for backwards compatibility
+ *********************************************/
+.reveal .slides section[data-transition=default].stack,
+.reveal.default .slides section.stack {
+  -webkit-transform-style: preserve-3d;
+          transform-style: preserve-3d; }
+
+.reveal .slides > section[data-transition=default].past,
+.reveal .slides > section[data-transition~=default-out].past,
+.reveal.default .slides > section:not([data-transition]).past {
+  -webkit-transform: translate3d(-100%, 0, 0) rotateY(-90deg) 
translate3d(-100%, 0, 0);
+          transform: translate3d(-100%, 0, 0) rotateY(-90deg) 
translate3d(-100%, 0, 0); }
+
+.reveal .slides > section[data-transition=default].future,
+.reveal .slides > section[data-transition~=default-in].future,
+.reveal.default .slides > section:not([data-transition]).future {
+  -webkit-transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 
0, 0);
+          transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 
0, 0); }
+
+.reveal .slides > section > section[data-transition=default].past,
+.reveal .slides > section > section[data-transition~=default-out].past,
+.reveal.default .slides > section > section:not([data-transition]).past {
+  -webkit-transform: translate3d(0, -300px, 0) rotateX(70deg) translate3d(0, 
-300px, 0);
+          transform: translate3d(0, -300px, 0) rotateX(70deg) translate3d(0, 
-300px, 0); }
+
+.reveal .slides > section > section[data-transition=default].future,
+.reveal .slides > section > section[data-transition~=default-in].future,
+.reveal.default .slides > section > section:not([data-transition]).future {
+  -webkit-transform: translate3d(0, 300px, 0) rotateX(-70deg) translate3d(0, 
300px, 0);
+          transform: translate3d(0, 300px, 0) rotateX(-70deg) translate3d(0, 
300px, 0); }
+
+.reveal .slides section[data-transition=convex].stack,
+.reveal.convex .slides section.stack {
+  -webkit-transform-style: preserve-3d;
+          transform-style: preserve-3d; }
+
+.reveal .slides > section[data-transition=convex].past,
+.reveal .slides > section[data-transition~=convex-out].past,
+.reveal.convex .slides > section:not([data-transition]).past {
+  -webkit-transform: translate3d(-100%, 0, 0) rotateY(-90deg) 
translate3d(-100%, 0, 0);
+          transform: translate3d(-100%, 0, 0) rotateY(-90deg) 
translate3d(-100%, 0, 0); }
+
+.reveal .slides > section[data-transition=convex].future,
+.reveal .slides > section[data-transition~=convex-in].future,
+.reveal.convex .slides > section:not([data-transition]).future {
+  -webkit-transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 
0, 0);
+          transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 
0, 0); }
+
+.reveal .slides > section > section[data-transition=convex].past,
+.reveal .slides > section > section[data-transition~=convex-out].past,
+.reveal.convex .slides > section > section:not([data-transition]).past {
+  -webkit-transform: translate3d(0, -300px, 0) rotateX(70deg) translate3d(0, 
-300px, 0);
+          transform: translate3d(0, -300px, 0) rotateX(70deg) translate3d(0, 
-300px, 0); }
+
+.reveal .slides > section > section[data-transition=convex].future,
+.reveal .slides > section > section[data-transition~=convex-in].future,
+.reveal.convex .slides > section > section:not([data-transition]).future {
+  -webkit-transform: translate3d(0, 300px, 0) rotateX(-70deg) translate3d(0, 
300px, 0);
+          transform: translate3d(0, 300px, 0) rotateX(-70deg) translate3d(0, 
300px, 0); }
+
+/*********************************************
+ * CONCAVE TRANSITION
+ *********************************************/
+.reveal .slides section[data-transition=concave].stack,
+.reveal.concave .slides section.stack {
+  -webkit-transform-style: preserve-3d;
+          transform-style: preserve-3d; }
+
+.reveal .slides > section[data-transition=concave].past,
+.reveal .slides > section[data-transition~=concave-out].past,
+.reveal.concave .slides > section:not([data-transition]).past {
+  -webkit-transform: translate3d(-100%, 0, 0) rotateY(90deg) 
translate3d(-100%, 0, 0);
+          transform: translate3d(-100%, 0, 0) rotateY(90deg) 
translate3d(-100%, 0, 0); }
+
+.reveal .slides > section[data-transition=concave].future,
+.reveal .slides > section[data-transition~=concave-in].future,
+.reveal.concave .slides > section:not([data-transition]).future {
+  -webkit-transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 
0, 0);
+          transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 
0, 0); }
+
+.reveal .slides > section > section[data-transition=concave].past,
+.reveal .slides > section > section[data-transition~=concave-out].past,
+.reveal.concave .slides > section > section:not([data-transition]).past {
+  -webkit-transform: translate3d(0, -80%, 0) rotateX(-70deg) translate3d(0, 
-80%, 0);
+          transform: translate3d(0, -80%, 0) rotateX(-70deg) translate3d(0, 
-80%, 0); }
+
+.reveal .slides > section > section[data-transition=concave].future,
+.reveal .slides > section > section[data-transition~=concave-in].future,
+.reveal.concave .slides > section > section:not([data-transition]).future {
+  -webkit-transform: translate3d(0, 80%, 0) rotateX(70deg) translate3d(0, 80%, 
0);
+          transform: translate3d(0, 80%, 0) rotateX(70deg) translate3d(0, 80%, 
0); }
+
+/*********************************************
+ * ZOOM TRANSITION
+ *********************************************/
+.reveal .slides section[data-transition=zoom],
+.reveal.zoom .slides section:not([data-transition]) {
+  transition-timing-function: ease; }
+
+.reveal .slides > section[data-transition=zoom].past,
+.reveal .slides > section[data-transition~=zoom-out].past,
+.reveal.zoom .slides > section:not([data-transition]).past {
+  visibility: hidden;
+  -webkit-transform: scale(16);
+          transform: scale(16); }
+
+.reveal .slides > section[data-transition=zoom].future,
+.reveal .slides > section[data-transition~=zoom-in].future,
+.reveal.zoom .slides > section:not([data-transition]).future {
+  visibility: hidden;
+  -webkit-transform: scale(0.2);
+          transform: scale(0.2); }
+
+.reveal .slides > section > section[data-transition=zoom].past,
+.reveal .slides > section > section[data-transition~=zoom-out].past,
+.reveal.zoom .slides > section > section:not([data-transition]).past {
+  -webkit-transform: scale(16);
+          transform: scale(16); }
+
+.reveal .slides > section > section[data-transition=zoom].future,
+.reveal .slides > section > section[data-transition~=zoom-in].future,
+.reveal.zoom .slides > section > section:not([data-transition]).future {
+  -webkit-transform: scale(0.2);
+          transform: scale(0.2); }
+
+/*********************************************
+ * CUBE TRANSITION
+ *
+ * WARNING:
+ * this is deprecated and will be removed in a
+ * future version.
+ *********************************************/
+.reveal.cube .slides {
+  -webkit-perspective: 1300px;
+          perspective: 1300px; }
+
+.reveal.cube .slides section {
+  padding: 30px;
+  min-height: 700px;
+  -webkit-backface-visibility: hidden;
+          backface-visibility: hidden;
+  box-sizing: border-box;
+  -webkit-transform-style: preserve-3d;
+          transform-style: preserve-3d; }
+
+.reveal.center.cube .slides section {
+  min-height: 0; }
+
+.reveal.cube .slides section:not(.stack):before {
+  content: '';
+  position: absolute;
+  display: block;
+  width: 100%;
+  height: 100%;
+  left: 0;
+  top: 0;
+  background: rgba(0, 0, 0, 0.1);
+  border-radius: 4px;
+  -webkit-transform: translateZ(-20px);
+          transform: translateZ(-20px); }
+
+.reveal.cube .slides section:not(.stack):after {
+  content: '';
+  position: absolute;
+  display: block;
+  width: 90%;
+  height: 30px;
+  left: 5%;
+  bottom: 0;
+  background: none;
+  z-index: 1;
+  border-radius: 4px;
+  box-shadow: 0px 95px 25px rgba(0, 0, 0, 0.2);
+  -webkit-transform: translateZ(-90px) rotateX(65deg);
+          transform: translateZ(-90px) rotateX(65deg); }
+
+.reveal.cube .slides > section.stack {
+  padding: 0;
+  background: none; }
+
+.reveal.cube .slides > section.past {
+  -webkit-transform-origin: 100% 0%;
+          transform-origin: 100% 0%;
+  -webkit-transform: translate3d(-100%, 0, 0) rotateY(-90deg);
+          transform: translate3d(-100%, 0, 0) rotateY(-90deg); }
+
+.reveal.cube .slides > section.future {
+  -webkit-transform-origin: 0% 0%;
+          transform-origin: 0% 0%;
+  -webkit-transform: translate3d(100%, 0, 0) rotateY(90deg);
+          transform: translate3d(100%, 0, 0) rotateY(90deg); }
+
+.reveal.cube .slides > section > section.past {
+  -webkit-transform-origin: 0% 100%;
+          transform-origin: 0% 100%;
+  -webkit-transform: translate3d(0, -100%, 0) rotateX(90deg);
+          transform: translate3d(0, -100%, 0) rotateX(90deg); }
+
+.reveal.cube .slides > section > section.future {
+  -webkit-transform-origin: 0% 0%;
+          transform-origin: 0% 0%;
+  -webkit-transform: translate3d(0, 100%, 0) rotateX(-90deg);
+          transform: translate3d(0, 100%, 0) rotateX(-90deg); }
+
+/*********************************************
+ * PAGE TRANSITION
+ *
+ * WARNING:
+ * this is deprecated and will be removed in a
+ * future version.
+ *********************************************/
+.reveal.page .slides {
+  -webkit-perspective-origin: 0% 50%;
+          perspective-origin: 0% 50%;
+  -webkit-perspective: 3000px;
+          perspective: 3000px; }
+
+.reveal.page .slides section {
+  padding: 30px;
+  min-height: 700px;
+  box-sizing: border-box;
+  -webkit-transform-style: preserve-3d;
+          transform-style: preserve-3d; }
+
+.reveal.page .slides section.past {
+  z-index: 12; }
+
+.reveal.page .slides section:not(.stack):before {
+  content: '';
+  position: absolute;
+  display: block;
+  width: 100%;
+  height: 100%;
+  left: 0;
+  top: 0;
+  background: rgba(0, 0, 0, 0.1);
+  -webkit-transform: translateZ(-20px);
+          transform: translateZ(-20px); }
+
+.reveal.page .slides section:not(.stack):after {
+  content: '';
+  position: absolute;
+  display: block;
+  width: 90%;
+  height: 30px;
+  left: 5%;
+  bottom: 0;
+  background: none;
+  z-index: 1;
+  border-radius: 4px;
+  box-shadow: 0px 95px 25px rgba(0, 0, 0, 0.2);
+  -webkit-transform: translateZ(-90px) rotateX(65deg); }
+
+.reveal.page .slides > section.stack {
+  padding: 0;
+  background: none; }
+
+.reveal.page .slides > section.past {
+  -webkit-transform-origin: 0% 0%;
+          transform-origin: 0% 0%;
+  -webkit-transform: translate3d(-40%, 0, 0) rotateY(-80deg);
+          transform: translate3d(-40%, 0, 0) rotateY(-80deg); }
+
+.reveal.page .slides > section.future {
+  -webkit-transform-origin: 100% 0%;
+          transform-origin: 100% 0%;
+  -webkit-transform: translate3d(0, 0, 0);
+          transform: translate3d(0, 0, 0); }
+
+.reveal.page .slides > section > section.past {
+  -webkit-transform-origin: 0% 0%;
+          transform-origin: 0% 0%;
+  -webkit-transform: translate3d(0, -40%, 0) rotateX(80deg);
+          transform: translate3d(0, -40%, 0) rotateX(80deg); }
+
+.reveal.page .slides > section > section.future {
+  -webkit-transform-origin: 0% 100%;
+          transform-origin: 0% 100%;
+  -webkit-transform: translate3d(0, 0, 0);
+          transform: translate3d(0, 0, 0); }
+
+/*********************************************
+ * FADE TRANSITION
+ *********************************************/
+.reveal .slides section[data-transition=fade],
+.reveal.fade .slides section:not([data-transition]),
+.reveal.fade .slides > section > section:not([data-transition]) {
+  -webkit-transform: none;
+          transform: none;
+  transition: opacity 0.5s; }
+
+.reveal.fade.overview .slides section,
+.reveal.fade.overview .slides > section > section {
+  transition: none; }
+
+/*********************************************
+ * NO TRANSITION
+ *********************************************/
+.reveal .slides section[data-transition=none],
+.reveal.none .slides section:not([data-transition]) {
+  -webkit-transform: none;
+          transform: none;
+  transition: none; }
+
+/*********************************************
+ * PAUSED MODE
+ *********************************************/
+.reveal .pause-overlay {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  background: black;
+  visibility: hidden;
+  opacity: 0;
+  z-index: 100;
+  transition: all 1s ease; }
+
+.reveal .pause-overlay .resume-button {
+  position: absolute;
+  bottom: 20px;
+  right: 20px;
+  color: #ccc;
+  border-radius: 2px;
+  padding: 6px 14px;
+  border: 2px solid #ccc;
+  font-size: 16px;
+  background: transparent;
+  cursor: pointer; }
+  .reveal .pause-overlay .resume-button:hover {
+    color: #fff;
+    border-color: #fff; }
+
+.reveal.paused .pause-overlay {
+  visibility: visible;
+  opacity: 1; }
+
+/*********************************************
+ * FALLBACK
+ *********************************************/
+.no-transforms {
+  overflow-y: auto; }
+
+.no-transforms .reveal {
+  overflow: visible; }
+
+.no-transforms .reveal .slides {
+  position: relative;
+  width: 80%;
+  max-width: 1280px;
+  height: auto;
+  top: 0;
+  margin: 0 auto;
+  text-align: center; }
+
+.no-transforms .reveal .controls,
+.no-transforms .reveal .progress {
+  display: none; }
+
+.no-transforms .reveal .slides section {
+  display: block;
+  opacity: 1;
+  position: relative;
+  height: auto;
+  min-height: 0;
+  top: 0;
+  left: 0;
+  margin: 10vh 0;
+  margin: 70px 0;
+  -webkit-transform: none;
+          transform: none; }
+
+.reveal .no-transition,
+.reveal .no-transition * {
+  transition: none !important; }
+
+/*********************************************
+ * PER-SLIDE BACKGROUNDS
+ *********************************************/
+.reveal .backgrounds {
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  top: 0;
+  left: 0;
+  -webkit-perspective: 600px;
+          perspective: 600px; }
+
+.reveal .slide-background {
+  display: none;
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  opacity: 0;
+  visibility: hidden;
+  overflow: hidden;
+  background-color: rgba(0, 0, 0, 0);
+  transition: all 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+.reveal .slide-background-content {
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  background-position: 50% 50%;
+  background-repeat: no-repeat;
+  background-size: cover; }
+
+.reveal .slide-background.stack {
+  display: block; }
+
+.reveal .slide-background.present {
+  opacity: 1;
+  visibility: visible;
+  z-index: 2; }
+
+.print-pdf .reveal .slide-background {
+  opacity: 1 !important;
+  visibility: visible !important; }
+
+/* Video backgrounds */
+.reveal .slide-background video {
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  max-width: none;
+  max-height: none;
+  top: 0;
+  left: 0;
+  -o-object-fit: cover;
+     object-fit: cover; }
+
+.reveal .slide-background[data-background-size="contain"] video {
+  -o-object-fit: contain;
+     object-fit: contain; }
+
+/* Immediate transition style */
+.reveal[data-background-transition=none] > .backgrounds .slide-background,
+.reveal > .backgrounds .slide-background[data-background-transition=none] {
+  transition: none; }
+
+/* Slide */
+.reveal[data-background-transition=slide] > .backgrounds .slide-background,
+.reveal > .backgrounds .slide-background[data-background-transition=slide] {
+  opacity: 1;
+  -webkit-backface-visibility: hidden;
+          backface-visibility: hidden; }
+
+.reveal[data-background-transition=slide] > .backgrounds 
.slide-background.past,
+.reveal > .backgrounds 
.slide-background.past[data-background-transition=slide] {
+  -webkit-transform: translate(-100%, 0);
+          transform: translate(-100%, 0); }
+
+.reveal[data-background-transition=slide] > .backgrounds 
.slide-background.future,
+.reveal > .backgrounds 
.slide-background.future[data-background-transition=slide] {
+  -webkit-transform: translate(100%, 0);
+          transform: translate(100%, 0); }
+
+.reveal[data-background-transition=slide] > .backgrounds .slide-background > 
.slide-background.past,
+.reveal > .backgrounds .slide-background > 
.slide-background.past[data-background-transition=slide] {
+  -webkit-transform: translate(0, -100%);
+          transform: translate(0, -100%); }
+
+.reveal[data-background-transition=slide] > .backgrounds .slide-background > 
.slide-background.future,
+.reveal > .backgrounds .slide-background > 
.slide-background.future[data-background-transition=slide] {
+  -webkit-transform: translate(0, 100%);
+          transform: translate(0, 100%); }
+
+/* Convex */
+.reveal[data-background-transition=convex] > .backgrounds 
.slide-background.past,
+.reveal > .backgrounds 
.slide-background.past[data-background-transition=convex] {
+  opacity: 0;
+  -webkit-transform: translate3d(-100%, 0, 0) rotateY(-90deg) 
translate3d(-100%, 0, 0);
+          transform: translate3d(-100%, 0, 0) rotateY(-90deg) 
translate3d(-100%, 0, 0); }
+
+.reveal[data-background-transition=convex] > .backgrounds 
.slide-background.future,
+.reveal > .backgrounds 
.slide-background.future[data-background-transition=convex] {
+  opacity: 0;
+  -webkit-transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 
0, 0);
+          transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 
0, 0); }
+
+.reveal[data-background-transition=convex] > .backgrounds .slide-background > 
.slide-background.past,
+.reveal > .backgrounds .slide-background > 
.slide-background.past[data-background-transition=convex] {
+  opacity: 0;
+  -webkit-transform: translate3d(0, -100%, 0) rotateX(90deg) translate3d(0, 
-100%, 0);
+          transform: translate3d(0, -100%, 0) rotateX(90deg) translate3d(0, 
-100%, 0); }
+
+.reveal[data-background-transition=convex] > .backgrounds .slide-background > 
.slide-background.future,
+.reveal > .backgrounds .slide-background > 
.slide-background.future[data-background-transition=convex] {
+  opacity: 0;
+  -webkit-transform: translate3d(0, 100%, 0) rotateX(-90deg) translate3d(0, 
100%, 0);
+          transform: translate3d(0, 100%, 0) rotateX(-90deg) translate3d(0, 
100%, 0); }
+
+/* Concave */
+.reveal[data-background-transition=concave] > .backgrounds 
.slide-background.past,
+.reveal > .backgrounds 
.slide-background.past[data-background-transition=concave] {
+  opacity: 0;
+  -webkit-transform: translate3d(-100%, 0, 0) rotateY(90deg) 
translate3d(-100%, 0, 0);
+          transform: translate3d(-100%, 0, 0) rotateY(90deg) 
translate3d(-100%, 0, 0); }
+
+.reveal[data-background-transition=concave] > .backgrounds 
.slide-background.future,
+.reveal > .backgrounds 
.slide-background.future[data-background-transition=concave] {
+  opacity: 0;
+  -webkit-transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 
0, 0);
+          transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 
0, 0); }
+
+.reveal[data-background-transition=concave] > .backgrounds .slide-background > 
.slide-background.past,
+.reveal > .backgrounds .slide-background > 
.slide-background.past[data-background-transition=concave] {
+  opacity: 0;
+  -webkit-transform: translate3d(0, -100%, 0) rotateX(-90deg) translate3d(0, 
-100%, 0);
+          transform: translate3d(0, -100%, 0) rotateX(-90deg) translate3d(0, 
-100%, 0); }
+
+.reveal[data-background-transition=concave] > .backgrounds .slide-background > 
.slide-background.future,
+.reveal > .backgrounds .slide-background > 
.slide-background.future[data-background-transition=concave] {
+  opacity: 0;
+  -webkit-transform: translate3d(0, 100%, 0) rotateX(90deg) translate3d(0, 
100%, 0);
+          transform: translate3d(0, 100%, 0) rotateX(90deg) translate3d(0, 
100%, 0); }
+
+/* Zoom */
+.reveal[data-background-transition=zoom] > .backgrounds .slide-background,
+.reveal > .backgrounds .slide-background[data-background-transition=zoom] {
+  transition-timing-function: ease; }
+
+.reveal[data-background-transition=zoom] > .backgrounds .slide-background.past,
+.reveal > .backgrounds .slide-background.past[data-background-transition=zoom] 
{
+  opacity: 0;
+  visibility: hidden;
+  -webkit-transform: scale(16);
+          transform: scale(16); }
+
+.reveal[data-background-transition=zoom] > .backgrounds 
.slide-background.future,
+.reveal > .backgrounds 
.slide-background.future[data-background-transition=zoom] {
+  opacity: 0;
+  visibility: hidden;
+  -webkit-transform: scale(0.2);
+          transform: scale(0.2); }
+
+.reveal[data-background-transition=zoom] > .backgrounds .slide-background > 
.slide-background.past,
+.reveal > .backgrounds .slide-background > 
.slide-background.past[data-background-transition=zoom] {
+  opacity: 0;
+  visibility: hidden;
+  -webkit-transform: scale(16);
+          transform: scale(16); }
+
+.reveal[data-background-transition=zoom] > .backgrounds .slide-background > 
.slide-background.future,
+.reveal > .backgrounds .slide-background > 
.slide-background.future[data-background-transition=zoom] {
+  opacity: 0;
+  visibility: hidden;
+  -webkit-transform: scale(0.2);
+          transform: scale(0.2); }
+
+/* Global transition speed settings */
+.reveal[data-transition-speed="fast"] > .backgrounds .slide-background {
+  transition-duration: 400ms; }
+
+.reveal[data-transition-speed="slow"] > .backgrounds .slide-background {
+  transition-duration: 1200ms; }
+
+/*********************************************
+ * OVERVIEW
+ *********************************************/
+.reveal.overview {
+  -webkit-perspective-origin: 50% 50%;
+          perspective-origin: 50% 50%;
+  -webkit-perspective: 700px;
+          perspective: 700px; }
+  .reveal.overview .slides {
+    -moz-transform-style: preserve-3d; }
+  .reveal.overview .slides section {
+    height: 100%;
+    top: 0 !important;
+    opacity: 1 !important;
+    overflow: hidden;
+    visibility: visible !important;
+    cursor: pointer;
+    box-sizing: border-box; }
+  .reveal.overview .slides section:hover,
+  .reveal.overview .slides section.present {
+    outline: 10px solid rgba(150, 150, 150, 0.4);
+    outline-offset: 10px; }
+  .reveal.overview .slides section .fragment {
+    opacity: 1;
+    transition: none; }
+  .reveal.overview .slides section:after,
+  .reveal.overview .slides section:before {
+    display: none !important; }
+  .reveal.overview .slides > section.stack {
+    padding: 0;
+    top: 0 !important;
+    background: none;
+    outline: none;
+    overflow: visible; }
+  .reveal.overview .backgrounds {
+    -webkit-perspective: inherit;
+            perspective: inherit;
+    -moz-transform-style: preserve-3d; }
+  .reveal.overview .backgrounds .slide-background {
+    opacity: 1;
+    visibility: visible;
+    outline: 10px solid rgba(150, 150, 150, 0.1);
+    outline-offset: 10px; }
+  .reveal.overview .backgrounds .slide-background.stack {
+    overflow: visible; }
+
+.reveal.overview .slides section,
+.reveal.overview-deactivating .slides section {
+  transition: none; }
+
+.reveal.overview .backgrounds .slide-background,
+.reveal.overview-deactivating .backgrounds .slide-background {
+  transition: none; }
+
+/*********************************************
+ * RTL SUPPORT
+ *********************************************/
+.reveal.rtl .slides,
+.reveal.rtl .slides h1,
+.reveal.rtl .slides h2,
+.reveal.rtl .slides h3,
+.reveal.rtl .slides h4,
+.reveal.rtl .slides h5,
+.reveal.rtl .slides h6 {
+  direction: rtl;
+  font-family: sans-serif; }
+
+.reveal.rtl pre,
+.reveal.rtl code {
+  direction: ltr; }
+
+.reveal.rtl ol,
+.reveal.rtl ul {
+  text-align: right; }
+
+.reveal.rtl .progress span {
+  float: right; }
+
+/*********************************************
+ * PARALLAX BACKGROUND
+ *********************************************/
+.reveal.has-parallax-background .backgrounds {
+  transition: all 0.8s ease; }
+
+/* Global transition speed settings */
+.reveal.has-parallax-background[data-transition-speed="fast"] .backgrounds {
+  transition-duration: 400ms; }
+
+.reveal.has-parallax-background[data-transition-speed="slow"] .backgrounds {
+  transition-duration: 1200ms; }
+
+/*********************************************
+ * OVERLAY FOR LINK PREVIEWS AND HELP
+ *********************************************/
+.reveal > .overlay {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  z-index: 1000;
+  background: rgba(0, 0, 0, 0.9);
+  opacity: 0;
+  visibility: hidden;
+  transition: all 0.3s ease; }
+
+.reveal > .overlay.visible {
+  opacity: 1;
+  visibility: visible; }
+
+.reveal > .overlay .spinner {
+  position: absolute;
+  display: block;
+  top: 50%;
+  left: 50%;
+  width: 32px;
+  height: 32px;
+  margin: -16px 0 0 -16px;
+  z-index: 10;
+  background-image: 
url(data:image/gif;base64,R0lGODlhIAAgAPMAAJmZmf%2F%2F%2F6%2Bvr8nJybW1tcDAwOjo6Nvb26ioqKOjo7Ozs%2FLy8vz8%2FAAAAAAAAAAAACH%2FC05FVFNDQVBFMi4wAwEAAAAh%2FhpDcmVhdGVkIHdpdGggYWpheGxvYWQuaW5mbwAh%2BQQJCgAAACwAAAAAIAAgAAAE5xDISWlhperN52JLhSSdRgwVo1ICQZRUsiwHpTJT4iowNS8vyW2icCF6k8HMMBkCEDskxTBDAZwuAkkqIfxIQyhBQBFvAQSDITM5VDW6XNE4KagNh6Bgwe60smQUB3d4Rz1ZBApnFASDd0hihh12BkE9kjAJVlycXIg7CQIFA6SlnJ87paqbSKiKoqusnbMdmDC2tXQlkUhziYtyWTxIfy6BE8WJt5YJvpJivxNaGmLHT0VnOgSYf0dZXS7APdpB
 [...]
+  visibility: visible;
+  opacity: 0.6;
+  transition: all 0.3s ease; }
+
+.reveal > .overlay header {
+  position: absolute;
+  left: 0;
+  top: 0;
+  width: 100%;
+  height: 40px;
+  z-index: 2;
+  border-bottom: 1px solid #222; }
+
+.reveal > .overlay header a {
+  display: inline-block;
+  width: 40px;
+  height: 40px;
+  line-height: 36px;
+  padding: 0 10px;
+  float: right;
+  opacity: 0.6;
+  box-sizing: border-box; }
+
+.reveal > .overlay header a:hover {
+  opacity: 1; }
+
+.reveal > .overlay header a .icon {
+  display: inline-block;
+  width: 20px;
+  height: 20px;
+  background-position: 50% 50%;
+  background-size: 100%;
+  background-repeat: no-repeat; }
+
+.reveal > .overlay header a.close .icon {
+  background-image: 
url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAABkklEQVRYR8WX4VHDMAxG6wnoJrABZQPYBCaBTWAD2g1gE5gg6OOsXuxIlr40d81dfrSJ9V4c2VLK7spHuTJ/5wpM07QXuXc5X0opX2tEJcadjHuV80li/FgxTIEK/5QBCICBD6xEhSMGHgQPgBgLiYVAB1dpSqKDawxTohFw4JSEA3clzgIBPCURwE2JucBR7rhPJJv5OpJwDX+SfDjgx1wACQeJG1aChP9K/IMmdZ8DtESV1WyP3Bt4MwM6sj4NMxMYiqUWHQu4KYA/SYkIjOsm3BXYWMKFDwU2khjCQ4ELJUJ4SmClRArOCmSXGuKma0fYD5CbzHxFpCSGAhfAVSSUGDUk2BWZaff2g6GE15BsBQ9nwmpIGDiyHQddwNTMKkbZaf9fajXQca
 [...]
+
+.reveal > .overlay header a.external .icon {
+  background-image: 
url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAcElEQVRYR+2WSQoAIQwEzf8f7XiOMkUQxUPlGkM3hVmiQfQR9GYnH1SsAQlI4DiBqkCMoNb9y2e90IAEJPAcgdznU9+engMaeJ7Azh5Y1U67gAho4DqBqmB1buAf0MB1AlVBek83ZPkmJMGc1wAR+AAqod/B97TRpQAAAABJRU5ErkJggg==);
 }
+
+.reveal > .overlay .viewport {
+  position: absolute;
+  display: -webkit-box;
+  display: -ms-flexbox;
+  display: flex;
+  top: 40px;
+  right: 0;
+  bottom: 0;
+  left: 0; }
+
+.reveal > .overlay.overlay-preview .viewport iframe {
+  width: 100%;
+  height: 100%;
+  max-width: 100%;
+  max-height: 100%;
+  border: 0;
+  opacity: 0;
+  visibility: hidden;
+  transition: all 0.3s ease; }
+
+.reveal > .overlay.overlay-preview.loaded .viewport iframe {
+  opacity: 1;
+  visibility: visible; }
+
+.reveal > .overlay.overlay-preview.loaded .viewport-inner {
+  position: absolute;
+  z-index: -1;
+  left: 0;
+  top: 45%;
+  width: 100%;
+  text-align: center;
+  letter-spacing: normal; }
+
+.reveal > .overlay.overlay-preview .x-frame-error {
+  opacity: 0;
+  transition: opacity 0.3s ease 0.3s; }
+
+.reveal > .overlay.overlay-preview.loaded .x-frame-error {
+  opacity: 1; }
+
+.reveal > .overlay.overlay-preview.loaded .spinner {
+  opacity: 0;
+  visibility: hidden;
+  -webkit-transform: scale(0.2);
+          transform: scale(0.2); }
+
+.reveal > .overlay.overlay-help .viewport {
+  overflow: auto;
+  color: #fff; }
+
+.reveal > .overlay.overlay-help .viewport .viewport-inner {
+  width: 600px;
+  margin: auto;
+  padding: 20px 20px 80px 20px;
+  text-align: center;
+  letter-spacing: normal; }
+
+.reveal > .overlay.overlay-help .viewport .viewport-inner .title {
+  font-size: 20px; }
+
+.reveal > .overlay.overlay-help .viewport .viewport-inner table {
+  border: 1px solid #fff;
+  border-collapse: collapse;
+  font-size: 16px; }
+
+.reveal > .overlay.overlay-help .viewport .viewport-inner table th,
+.reveal > .overlay.overlay-help .viewport .viewport-inner table td {
+  width: 200px;
+  padding: 14px;
+  border: 1px solid #fff;
+  vertical-align: middle; }
+
+.reveal > .overlay.overlay-help .viewport .viewport-inner table th {
+  padding-top: 20px;
+  padding-bottom: 20px; }
+
+/*********************************************
+ * PLAYBACK COMPONENT
+ *********************************************/
+.reveal .playback {
+  position: absolute;
+  left: 15px;
+  bottom: 20px;
+  z-index: 30;
+  cursor: pointer;
+  transition: all 400ms ease;
+  -webkit-tap-highlight-color: rgba(0, 0, 0, 0); }
+
+.reveal.overview .playback {
+  opacity: 0;
+  visibility: hidden; }
+
+/*********************************************
+ * CODE HIGHLGIHTING
+ *********************************************/
+.reveal .hljs table {
+  margin: initial; }
+
+.reveal .hljs-ln-code,
+.reveal .hljs-ln-numbers {
+  padding: 0;
+  border: 0; }
+
+.reveal .hljs-ln-numbers {
+  opacity: 0.6;
+  padding-right: 0.75em;
+  text-align: right;
+  vertical-align: top; }
+
+.reveal .hljs[data-line-numbers]:not([data-line-numbers=""]) 
tr:not(.highlight-line) {
+  opacity: 0.4; }
+
+/*********************************************
+ * ROLLING LINKS
+ *********************************************/
+.reveal .roll {
+  display: inline-block;
+  line-height: 1.2;
+  overflow: hidden;
+  vertical-align: top;
+  -webkit-perspective: 400px;
+          perspective: 400px;
+  -webkit-perspective-origin: 50% 50%;
+          perspective-origin: 50% 50%; }
+
+.reveal .roll:hover {
+  background: none;
+  text-shadow: none; }
+
+.reveal .roll span {
+  display: block;
+  position: relative;
+  padding: 0 2px;
+  pointer-events: none;
+  transition: all 400ms ease;
+  -webkit-transform-origin: 50% 0%;
+          transform-origin: 50% 0%;
+  -webkit-transform-style: preserve-3d;
+          transform-style: preserve-3d;
+  -webkit-backface-visibility: hidden;
+          backface-visibility: hidden; }
+
+.reveal .roll:hover span {
+  background: rgba(0, 0, 0, 0.5);
+  -webkit-transform: translate3d(0px, 0px, -45px) rotateX(90deg);
+          transform: translate3d(0px, 0px, -45px) rotateX(90deg); }
+
+.reveal .roll span:after {
+  content: attr(data-title);
+  display: block;
+  position: absolute;
+  left: 0;
+  top: 0;
+  padding: 0 2px;
+  -webkit-backface-visibility: hidden;
+          backface-visibility: hidden;
+  -webkit-transform-origin: 50% 0%;
+          transform-origin: 50% 0%;
+  -webkit-transform: translate3d(0px, 110%, 0px) rotateX(-90deg);
+          transform: translate3d(0px, 110%, 0px) rotateX(-90deg); }
+
+/*********************************************
+ * SPEAKER NOTES
+ *********************************************/
+.reveal aside.notes {
+  display: none; }
+
+.reveal .speaker-notes {
+  display: none;
+  position: absolute;
+  width: 33.3333333333%;
+  height: 100%;
+  top: 0;
+  left: 100%;
+  padding: 14px 18px 14px 18px;
+  z-index: 1;
+  font-size: 18px;
+  line-height: 1.4;
+  border: 1px solid rgba(0, 0, 0, 0.05);
+  color: #222;
+  background-color: #f5f5f5;
+  overflow: auto;
+  box-sizing: border-box;
+  text-align: left;
+  font-family: Helvetica, sans-serif;
+  -webkit-overflow-scrolling: touch; }
+  .reveal .speaker-notes .notes-placeholder {
+    color: #ccc;
+    font-style: italic; }
+  .reveal .speaker-notes:focus {
+    outline: none; }
+  .reveal .speaker-notes:before {
+    content: 'Speaker notes';
+    display: block;
+    margin-bottom: 10px;
+    opacity: 0.5; }
+
+.reveal.show-notes {
+  max-width: 75%;
+  overflow: visible; }
+
+.reveal.show-notes .speaker-notes {
+  display: block; }
+
+@media screen and (min-width: 1600px) {
+  .reveal .speaker-notes {
+    font-size: 20px; } }
+
+@media screen and (max-width: 1024px) {
+  .reveal.show-notes {
+    border-left: 0;
+    max-width: none;
+    max-height: 70%;
+    max-height: 70vh;
+    overflow: visible; }
+  .reveal.show-notes .speaker-notes {
+    top: 100%;
+    left: 0;
+    width: 100%;
+    height: 42.8571428571%;
+    height: 30vh;
+    border: 0; } }
+
+@media screen and (max-width: 600px) {
+  .reveal.show-notes {
+    max-height: 60%;
+    max-height: 60vh; }
+  .reveal.show-notes .speaker-notes {
+    top: 100%;
+    height: 66.6666666667%;
+    height: 40vh; }
+  .reveal .speaker-notes {
+    font-size: 14px; } }
+
+/*********************************************
+ * ZOOM PLUGIN
+ *********************************************/
+.zoomed .reveal *,
+.zoomed .reveal *:before,
+.zoomed .reveal *:after {
+  -webkit-backface-visibility: visible !important;
+          backface-visibility: visible !important; }
+
+.zoomed .reveal .progress,
+.zoomed .reveal .controls {
+  opacity: 0; }
+
+.zoomed .reveal .roll span {
+  background: none; }
+
+.zoomed .reveal .roll span:after {
+  visibility: hidden; }
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/reveal.scss 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/reveal.scss
new file mode 100644
index 0000000..ab732a4
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/reveal.scss
@@ -0,0 +1,1768 @@
+/*!
+ * reveal.js
+ * http://revealjs.com
+ * MIT licensed
+ *
+ * Copyright (C) 2019 Hakim El Hattab, http://hakim.se
+ */
+
+
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+
+html {
+       width: 100%;
+       height: 100%;
+       height: 100vh;
+       height: calc( var(--vh, 1vh) * 100 );
+       overflow: hidden;
+}
+
+body {
+       height: 100%;
+       overflow: hidden;
+       position: relative;
+       line-height: 1;
+       margin: 0;
+
+       background-color: #fff;
+       color: #000;
+}
+
+
+/*********************************************
+ * VIEW FRAGMENTS
+ *********************************************/
+
+.reveal .slides section .fragment {
+       opacity: 0;
+       visibility: hidden;
+       transition: all .2s ease;
+
+       &.visible {
+               opacity: 1;
+               visibility: inherit;
+       }
+}
+
+.reveal .slides section .fragment.grow {
+       opacity: 1;
+       visibility: inherit;
+
+       &.visible {
+               transform: scale( 1.3 );
+       }
+}
+
+.reveal .slides section .fragment.shrink {
+       opacity: 1;
+       visibility: inherit;
+
+       &.visible {
+               transform: scale( 0.7 );
+       }
+}
+
+.reveal .slides section .fragment.zoom-in {
+       transform: scale( 0.1 );
+
+       &.visible {
+               transform: none;
+       }
+}
+
+.reveal .slides section .fragment.fade-out {
+       opacity: 1;
+       visibility: inherit;
+
+       &.visible {
+               opacity: 0;
+               visibility: hidden;
+       }
+}
+
+.reveal .slides section .fragment.semi-fade-out {
+       opacity: 1;
+       visibility: inherit;
+
+       &.visible {
+               opacity: 0.5;
+               visibility: inherit;
+       }
+}
+
+.reveal .slides section .fragment.strike {
+       opacity: 1;
+       visibility: inherit;
+
+       &.visible {
+               text-decoration: line-through;
+       }
+}
+
+.reveal .slides section .fragment.fade-up {
+       transform: translate(0, 20%);
+
+       &.visible {
+               transform: translate(0, 0);
+       }
+}
+
+.reveal .slides section .fragment.fade-down {
+       transform: translate(0, -20%);
+
+       &.visible {
+               transform: translate(0, 0);
+       }
+}
+
+.reveal .slides section .fragment.fade-right {
+       transform: translate(-20%, 0);
+
+       &.visible {
+               transform: translate(0, 0);
+       }
+}
+
+.reveal .slides section .fragment.fade-left {
+       transform: translate(20%, 0);
+
+       &.visible {
+               transform: translate(0, 0);
+       }
+}
+
+.reveal .slides section .fragment.fade-in-then-out,
+.reveal .slides section .fragment.current-visible {
+       opacity: 0;
+       visibility: hidden;
+
+       &.current-fragment {
+               opacity: 1;
+               visibility: inherit;
+       }
+}
+
+.reveal .slides section .fragment.fade-in-then-semi-out {
+       opacity: 0;
+       visibility: hidden;
+
+       &.visible {
+               opacity: 0.5;
+               visibility: inherit;
+       }
+
+       &.current-fragment {
+               opacity: 1;
+               visibility: inherit;
+       }
+}
+
+.reveal .slides section .fragment.highlight-red,
+.reveal .slides section .fragment.highlight-current-red,
+.reveal .slides section .fragment.highlight-green,
+.reveal .slides section .fragment.highlight-current-green,
+.reveal .slides section .fragment.highlight-blue,
+.reveal .slides section .fragment.highlight-current-blue {
+       opacity: 1;
+       visibility: inherit;
+}
+       .reveal .slides section .fragment.highlight-red.visible {
+               color: #ff2c2d
+       }
+       .reveal .slides section .fragment.highlight-green.visible {
+               color: #17ff2e;
+       }
+       .reveal .slides section .fragment.highlight-blue.visible {
+               color: #1b91ff;
+       }
+
+.reveal .slides section .fragment.highlight-current-red.current-fragment {
+       color: #ff2c2d
+}
+.reveal .slides section .fragment.highlight-current-green.current-fragment {
+       color: #17ff2e;
+}
+.reveal .slides section .fragment.highlight-current-blue.current-fragment {
+       color: #1b91ff;
+}
+
+
+/*********************************************
+ * DEFAULT ELEMENT STYLES
+ *********************************************/
+
+/* Fixes issue in Chrome where italic fonts did not appear when printing to 
PDF */
+.reveal:after {
+  content: '';
+  font-style: italic;
+}
+
+.reveal iframe {
+       z-index: 1;
+}
+
+/** Prevents layering issues in certain browser/transition combinations */
+.reveal a {
+       position: relative;
+}
+
+.reveal .stretch {
+       max-width: none;
+       max-height: none;
+}
+
+.reveal pre.stretch code {
+       height: 100%;
+       max-height: 100%;
+       box-sizing: border-box;
+}
+
+
+/*********************************************
+ * CONTROLS
+ *********************************************/
+
+@keyframes bounce-right {
+       0%, 10%, 25%, 40%, 50% {transform: translateX(0);}
+       20% {transform: translateX(10px);}
+       30% {transform: translateX(-5px);}
+}
+
+@keyframes bounce-down {
+       0%, 10%, 25%, 40%, 50% {transform: translateY(0);}
+       20% {transform: translateY(10px);}
+       30% {transform: translateY(-5px);}
+}
+
+$controlArrowSize: 3.6em;
+$controlArrowSpacing: 1.4em;
+$controlArrowLength: 2.6em;
+$controlArrowThickness: 0.5em;
+$controlsArrowAngle: 45deg;
+$controlsArrowAngleHover: 40deg;
+$controlsArrowAngleActive: 36deg;
+
+@mixin controlsArrowTransform( $angle ) {
+       &:before {
+               transform: translateX(($controlArrowSize - 
$controlArrowLength)/2) translateY(($controlArrowSize - 
$controlArrowThickness)/2) rotate( $angle );
+       }
+
+       &:after {
+               transform: translateX(($controlArrowSize - 
$controlArrowLength)/2) translateY(($controlArrowSize - 
$controlArrowThickness)/2) rotate( -$angle );
+       }
+}
+
+.reveal .controls {
+       $spacing: 12px;
+
+       display: none;
+       position: absolute;
+       top: auto;
+       bottom: $spacing;
+       right: $spacing;
+       left: auto;
+       z-index: 1;
+       color: #000;
+       pointer-events: none;
+       font-size: 10px;
+
+       button {
+               position: absolute;
+               padding: 0;
+               background-color: transparent;
+               border: 0;
+               outline: 0;
+               cursor: pointer;
+               color: currentColor;
+               transform: scale(.9999);
+               transition: color 0.2s ease,
+                                       opacity 0.2s ease,
+                                       transform 0.2s ease;
+               z-index: 2; // above slides
+               pointer-events: auto;
+               font-size: inherit;
+
+               visibility: hidden;
+               opacity: 0;
+
+               -webkit-appearance: none;
+               -webkit-tap-highlight-color: rgba( 0, 0, 0, 0 );
+       }
+
+       .controls-arrow:before,
+       .controls-arrow:after {
+               content: '';
+               position: absolute;
+               top: 0;
+               left: 0;
+               width: $controlArrowLength;
+               height: $controlArrowThickness;
+               border-radius: $controlArrowThickness/2;
+               background-color: currentColor;
+
+               transition: all 0.15s ease, background-color 0.8s ease;
+               transform-origin: floor(($controlArrowThickness/2)*10)/10 50%;
+               will-change: transform;
+       }
+
+       .controls-arrow {
+               position: relative;
+               width: $controlArrowSize;
+               height: $controlArrowSize;
+
+               @include controlsArrowTransform( $controlsArrowAngle );
+
+               &:hover {
+                       @include controlsArrowTransform( 
$controlsArrowAngleHover );
+               }
+
+               &:active {
+                       @include controlsArrowTransform( 
$controlsArrowAngleActive );
+               }
+       }
+
+       .navigate-left {
+               right: $controlArrowSize + $controlArrowSpacing*2;
+               bottom: $controlArrowSpacing + $controlArrowSize/2;
+               transform: translateX( -10px );
+       }
+
+       .navigate-right {
+               right: 0;
+               bottom: $controlArrowSpacing + $controlArrowSize/2;
+               transform: translateX( 10px );
+
+               .controls-arrow {
+                       transform: rotate( 180deg );
+               }
+
+               &.highlight {
+                       animation: bounce-right 2s 50 both ease-out;
+               }
+       }
+
+       .navigate-up {
+               right: $controlArrowSpacing + $controlArrowSize/2;
+               bottom: $controlArrowSpacing*2 + $controlArrowSize;
+               transform: translateY( -10px );
+
+               .controls-arrow {
+                       transform: rotate( 90deg );
+               }
+       }
+
+       .navigate-down {
+               right: $controlArrowSpacing + $controlArrowSize/2;
+               bottom: 0;
+               transform: translateY( 10px );
+
+               .controls-arrow {
+                       transform: rotate( -90deg );
+               }
+
+               &.highlight {
+                       animation: bounce-down 2s 50 both ease-out;
+               }
+       }
+
+       // Back arrow style: "faded":
+       // Deemphasize backwards navigation arrows in favor of drawing
+       // attention to forwards navigation
+       &[data-controls-back-arrows="faded"] .navigate-left.enabled,
+       &[data-controls-back-arrows="faded"] .navigate-up.enabled {
+               opacity: 0.3;
+
+               &:hover {
+                       opacity: 1;
+               }
+       }
+
+       // Back arrow style: "hidden":
+       // Never show arrows for backwards navigation
+       &[data-controls-back-arrows="hidden"] .navigate-left.enabled,
+       &[data-controls-back-arrows="hidden"] .navigate-up.enabled {
+               opacity: 0;
+               visibility: hidden;
+       }
+
+       // Any control button that can be clicked is "enabled"
+       .enabled {
+               visibility: visible;
+               opacity: 0.9;
+               cursor: pointer;
+               transform: none;
+       }
+
+       // Any control button that leads to showing or hiding
+       // a fragment
+       .enabled.fragmented {
+               opacity: 0.5;
+       }
+
+       .enabled:hover,
+       .enabled.fragmented:hover {
+               opacity: 1;
+       }
+}
+
+.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-up,
+.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-down {
+       display: none;
+}
+
+// Adjust the layout when there are no vertical slides
+.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-left,
+.reveal:not(.has-vertical-slides) .controls .navigate-left {
+       bottom: $controlArrowSpacing;
+       right: 0.5em + $controlArrowSpacing + $controlArrowSize;
+}
+
+.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-right,
+.reveal:not(.has-vertical-slides) .controls .navigate-right {
+       bottom: $controlArrowSpacing;
+       right: 0.5em;
+}
+
+// Adjust the layout when there are no horizontal slides
+.reveal:not(.has-horizontal-slides) .controls .navigate-up {
+       right: $controlArrowSpacing;
+       bottom: $controlArrowSpacing + $controlArrowSize;
+}
+.reveal:not(.has-horizontal-slides) .controls .navigate-down {
+       right: $controlArrowSpacing;
+       bottom: 0.5em;
+}
+
+// Invert arrows based on background color
+.reveal.has-dark-background .controls {
+       color: #fff;
+}
+.reveal.has-light-background .controls {
+       color: #000;
+}
+
+// Disable active states on touch devices
+.reveal.no-hover .controls .controls-arrow:hover,
+.reveal.no-hover .controls .controls-arrow:active {
+       @include controlsArrowTransform( $controlsArrowAngle );
+}
+
+// Edge aligned controls layout
+@media screen and (min-width: 500px) {
+
+       $spacing: 8px;
+
+       .reveal .controls[data-controls-layout="edges"] {
+               & {
+                       top: 0;
+                       right: 0;
+                       bottom: 0;
+                       left: 0;
+               }
+
+               .navigate-left,
+               .navigate-right,
+               .navigate-up,
+               .navigate-down {
+                       bottom: auto;
+                       right: auto;
+               }
+
+               .navigate-left {
+                       top: 50%;
+                       left: $spacing;
+                       margin-top: -$controlArrowSize/2;
+               }
+
+               .navigate-right {
+                       top: 50%;
+                       right: $spacing;
+                       margin-top: -$controlArrowSize/2;
+               }
+
+               .navigate-up {
+                       top: $spacing;
+                       left: 50%;
+                       margin-left: -$controlArrowSize/2;
+               }
+
+               .navigate-down {
+                       bottom: $spacing;
+                       left: 50%;
+                       margin-left: -$controlArrowSize/2;
+               }
+       }
+
+}
+
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+
+.reveal .progress {
+       position: absolute;
+       display: none;
+       height: 3px;
+       width: 100%;
+       bottom: 0;
+       left: 0;
+       z-index: 10;
+
+       background-color: rgba( 0, 0, 0, 0.2 );
+       color: #fff;
+}
+       .reveal .progress:after {
+               content: '';
+               display: block;
+               position: absolute;
+               height: 10px;
+               width: 100%;
+               top: -10px;
+       }
+       .reveal .progress span {
+               display: block;
+               height: 100%;
+               width: 0px;
+
+               background-color: currentColor;
+               transition: width 800ms cubic-bezier(0.260, 0.860, 0.440, 
0.985);
+       }
+
+/*********************************************
+ * SLIDE NUMBER
+ *********************************************/
+
+.reveal .slide-number {
+       position: absolute;
+       display: block;
+       right: 8px;
+       bottom: 8px;
+       z-index: 31;
+       font-family: Helvetica, sans-serif;
+       font-size: 12px;
+       line-height: 1;
+       color: #fff;
+       background-color: rgba( 0, 0, 0, 0.4 );
+       padding: 5px;
+}
+
+.reveal .slide-number a {
+       color: currentColor;
+}
+
+.reveal .slide-number-delimiter {
+       margin: 0 3px;
+}
+
+/*********************************************
+ * SLIDES
+ *********************************************/
+
+.reveal {
+       position: relative;
+       width: 100%;
+       height: 100%;
+       overflow: hidden;
+       touch-action: pinch-zoom;
+}
+
+.reveal .slides {
+       position: absolute;
+       width: 100%;
+       height: 100%;
+       top: 0;
+       right: 0;
+       bottom: 0;
+       left: 0;
+       margin: auto;
+       pointer-events: none;
+
+       overflow: visible;
+       z-index: 1;
+       text-align: center;
+       perspective: 600px;
+       perspective-origin: 50% 40%;
+}
+
+.reveal .slides>section {
+       perspective: 600px;
+}
+
+.reveal .slides>section,
+.reveal .slides>section>section {
+       display: none;
+       position: absolute;
+       width: 100%;
+       padding: 20px 0px;
+       pointer-events: auto;
+
+       z-index: 10;
+       transform-style: flat;
+       transition: transform-origin 800ms cubic-bezier(0.260, 0.860, 0.440, 
0.985),
+                               transform 800ms cubic-bezier(0.260, 0.860, 
0.440, 0.985),
+                               visibility 800ms cubic-bezier(0.260, 0.860, 
0.440, 0.985),
+                               opacity 800ms cubic-bezier(0.260, 0.860, 0.440, 
0.985);
+}
+
+/* Global transition speed settings */
+.reveal[data-transition-speed="fast"] .slides section {
+       transition-duration: 400ms;
+}
+.reveal[data-transition-speed="slow"] .slides section {
+       transition-duration: 1200ms;
+}
+
+/* Slide-specific transition speed overrides */
+.reveal .slides section[data-transition-speed="fast"] {
+       transition-duration: 400ms;
+}
+.reveal .slides section[data-transition-speed="slow"] {
+       transition-duration: 1200ms;
+}
+
+.reveal .slides>section.stack {
+       padding-top: 0;
+       padding-bottom: 0;
+       pointer-events: none;
+       height: 100%;
+}
+
+.reveal .slides>section.present,
+.reveal .slides>section>section.present {
+       display: block;
+       z-index: 11;
+       opacity: 1;
+}
+
+.reveal .slides>section:empty,
+.reveal .slides>section>section:empty,
+.reveal .slides>section[data-background-interactive],
+.reveal .slides>section>section[data-background-interactive] {
+       pointer-events: none;
+}
+
+.reveal.center,
+.reveal.center .slides,
+.reveal.center .slides section {
+       min-height: 0 !important;
+}
+
+/* Don't allow interaction with invisible slides */
+.reveal .slides>section.future,
+.reveal .slides>section>section.future,
+.reveal .slides>section.past,
+.reveal .slides>section>section.past {
+       pointer-events: none;
+}
+
+.reveal.overview .slides>section,
+.reveal.overview .slides>section>section {
+       pointer-events: auto;
+}
+
+.reveal .slides>section.past,
+.reveal .slides>section.future,
+.reveal .slides>section>section.past,
+.reveal .slides>section>section.future {
+       opacity: 0;
+}
+
+
+/*********************************************
+ * Mixins for readability of transitions
+ *********************************************/
+
+@mixin transition-global($style) {
+       .reveal .slides section[data-transition=#{$style}],
+       .reveal.#{$style} .slides section:not([data-transition]) {
+               @content;
+       }
+}
+@mixin transition-stack($style) {
+       .reveal .slides section[data-transition=#{$style}].stack,
+       .reveal.#{$style} .slides section.stack {
+               @content;
+       }
+}
+@mixin transition-horizontal-past($style) {
+       .reveal .slides>section[data-transition=#{$style}].past,
+       .reveal .slides>section[data-transition~=#{$style}-out].past,
+       .reveal.#{$style} .slides>section:not([data-transition]).past {
+               @content;
+       }
+}
+@mixin transition-horizontal-future($style) {
+       .reveal .slides>section[data-transition=#{$style}].future,
+       .reveal .slides>section[data-transition~=#{$style}-in].future,
+       .reveal.#{$style} .slides>section:not([data-transition]).future {
+               @content;
+       }
+}
+
+@mixin transition-vertical-past($style) {
+       .reveal .slides>section>section[data-transition=#{$style}].past,
+       .reveal .slides>section>section[data-transition~=#{$style}-out].past,
+       .reveal.#{$style} .slides>section>section:not([data-transition]).past {
+               @content;
+       }
+}
+@mixin transition-vertical-future($style) {
+       .reveal .slides>section>section[data-transition=#{$style}].future,
+       .reveal .slides>section>section[data-transition~=#{$style}-in].future,
+       .reveal.#{$style} .slides>section>section:not([data-transition]).future 
{
+               @content;
+       }
+}
+
+/*********************************************
+ * SLIDE TRANSITION
+ * Aliased 'linear' for backwards compatibility
+ *********************************************/
+
+@each $stylename in slide, linear {
+       .reveal.#{$stylename} section {
+               backface-visibility: hidden;
+       }
+       @include transition-horizontal-past(#{$stylename}) {
+               transform: translate(-150%, 0);
+       }
+       @include transition-horizontal-future(#{$stylename}) {
+               transform: translate(150%, 0);
+       }
+       @include transition-vertical-past(#{$stylename}) {
+               transform: translate(0, -150%);
+       }
+       @include transition-vertical-future(#{$stylename}) {
+               transform: translate(0, 150%);
+       }
+}
+
+/*********************************************
+ * CONVEX TRANSITION
+ * Aliased 'default' for backwards compatibility
+ *********************************************/
+
+@each $stylename in default, convex {
+       @include transition-stack(#{$stylename}) {
+               transform-style: preserve-3d;
+       }
+
+       @include transition-horizontal-past(#{$stylename}) {
+               transform: translate3d(-100%, 0, 0) rotateY(-90deg) 
translate3d(-100%, 0, 0);
+       }
+       @include transition-horizontal-future(#{$stylename}) {
+               transform: translate3d(100%, 0, 0) rotateY(90deg) 
translate3d(100%, 0, 0);
+       }
+       @include transition-vertical-past(#{$stylename}) {
+               transform: translate3d(0, -300px, 0) rotateX(70deg) 
translate3d(0, -300px, 0);
+       }
+       @include transition-vertical-future(#{$stylename}) {
+               transform: translate3d(0, 300px, 0) rotateX(-70deg) 
translate3d(0, 300px, 0);
+       }
+}
+
+/*********************************************
+ * CONCAVE TRANSITION
+ *********************************************/
+
+@include transition-stack(concave) {
+       transform-style: preserve-3d;
+}
+
+@include transition-horizontal-past(concave) {
+       transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 
0, 0);
+}
+@include transition-horizontal-future(concave) {
+       transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 
0);
+}
+@include transition-vertical-past(concave) {
+       transform: translate3d(0, -80%, 0) rotateX(-70deg) translate3d(0, -80%, 
0);
+}
+@include transition-vertical-future(concave) {
+       transform: translate3d(0, 80%, 0) rotateX(70deg) translate3d(0, 80%, 0);
+}
+
+
+/*********************************************
+ * ZOOM TRANSITION
+ *********************************************/
+
+@include transition-global(zoom) {
+       transition-timing-function: ease;
+}
+@include transition-horizontal-past(zoom) {
+       visibility: hidden;
+       transform: scale(16);
+}
+@include transition-horizontal-future(zoom) {
+       visibility: hidden;
+       transform: scale(0.2);
+}
+@include transition-vertical-past(zoom) {
+       transform: scale(16);
+}
+@include transition-vertical-future(zoom) {
+       transform: scale(0.2);
+}
+
+
+/*********************************************
+ * CUBE TRANSITION
+ *
+ * WARNING:
+ * this is deprecated and will be removed in a
+ * future version.
+ *********************************************/
+
+.reveal.cube .slides {
+       perspective: 1300px;
+}
+
+.reveal.cube .slides section {
+       padding: 30px;
+       min-height: 700px;
+       backface-visibility: hidden;
+       box-sizing: border-box;
+       transform-style: preserve-3d;
+}
+       .reveal.center.cube .slides section {
+               min-height: 0;
+       }
+       .reveal.cube .slides section:not(.stack):before {
+               content: '';
+               position: absolute;
+               display: block;
+               width: 100%;
+               height: 100%;
+               left: 0;
+               top: 0;
+               background: rgba(0,0,0,0.1);
+               border-radius: 4px;
+               transform: translateZ( -20px );
+       }
+       .reveal.cube .slides section:not(.stack):after {
+               content: '';
+               position: absolute;
+               display: block;
+               width: 90%;
+               height: 30px;
+               left: 5%;
+               bottom: 0;
+               background: none;
+               z-index: 1;
+
+               border-radius: 4px;
+               box-shadow: 0px 95px 25px rgba(0,0,0,0.2);
+               transform: translateZ(-90px) rotateX( 65deg );
+       }
+
+.reveal.cube .slides>section.stack {
+       padding: 0;
+       background: none;
+}
+
+.reveal.cube .slides>section.past {
+       transform-origin: 100% 0%;
+       transform: translate3d(-100%, 0, 0) rotateY(-90deg);
+}
+
+.reveal.cube .slides>section.future {
+       transform-origin: 0% 0%;
+       transform: translate3d(100%, 0, 0) rotateY(90deg);
+}
+
+.reveal.cube .slides>section>section.past {
+       transform-origin: 0% 100%;
+       transform: translate3d(0, -100%, 0) rotateX(90deg);
+}
+
+.reveal.cube .slides>section>section.future {
+       transform-origin: 0% 0%;
+       transform: translate3d(0, 100%, 0) rotateX(-90deg);
+}
+
+
+/*********************************************
+ * PAGE TRANSITION
+ *
+ * WARNING:
+ * this is deprecated and will be removed in a
+ * future version.
+ *********************************************/
+
+.reveal.page .slides {
+       perspective-origin: 0% 50%;
+       perspective: 3000px;
+}
+
+.reveal.page .slides section {
+       padding: 30px;
+       min-height: 700px;
+       box-sizing: border-box;
+       transform-style: preserve-3d;
+}
+       .reveal.page .slides section.past {
+               z-index: 12;
+       }
+       .reveal.page .slides section:not(.stack):before {
+               content: '';
+               position: absolute;
+               display: block;
+               width: 100%;
+               height: 100%;
+               left: 0;
+               top: 0;
+               background: rgba(0,0,0,0.1);
+               transform: translateZ( -20px );
+       }
+       .reveal.page .slides section:not(.stack):after {
+               content: '';
+               position: absolute;
+               display: block;
+               width: 90%;
+               height: 30px;
+               left: 5%;
+               bottom: 0;
+               background: none;
+               z-index: 1;
+
+               border-radius: 4px;
+               box-shadow: 0px 95px 25px rgba(0,0,0,0.2);
+
+               -webkit-transform: translateZ(-90px) rotateX( 65deg );
+       }
+
+.reveal.page .slides>section.stack {
+       padding: 0;
+       background: none;
+}
+
+.reveal.page .slides>section.past {
+       transform-origin: 0% 0%;
+       transform: translate3d(-40%, 0, 0) rotateY(-80deg);
+}
+
+.reveal.page .slides>section.future {
+       transform-origin: 100% 0%;
+       transform: translate3d(0, 0, 0);
+}
+
+.reveal.page .slides>section>section.past {
+       transform-origin: 0% 0%;
+       transform: translate3d(0, -40%, 0) rotateX(80deg);
+}
+
+.reveal.page .slides>section>section.future {
+       transform-origin: 0% 100%;
+       transform: translate3d(0, 0, 0);
+}
+
+
+/*********************************************
+ * FADE TRANSITION
+ *********************************************/
+
+.reveal .slides section[data-transition=fade],
+.reveal.fade .slides section:not([data-transition]),
+.reveal.fade .slides>section>section:not([data-transition]) {
+       transform: none;
+       transition: opacity 0.5s;
+}
+
+
+.reveal.fade.overview .slides section,
+.reveal.fade.overview .slides>section>section {
+       transition: none;
+}
+
+
+/*********************************************
+ * NO TRANSITION
+ *********************************************/
+
+@include transition-global(none) {
+       transform: none;
+       transition: none;
+}
+
+
+/*********************************************
+ * PAUSED MODE
+ *********************************************/
+
+.reveal .pause-overlay {
+       position: absolute;
+       top: 0;
+       left: 0;
+       width: 100%;
+       height: 100%;
+       background: black;
+       visibility: hidden;
+       opacity: 0;
+       z-index: 100;
+       transition: all 1s ease;
+}
+
+.reveal .pause-overlay .resume-button {
+       position: absolute;
+       bottom: 20px;
+       right: 20px;
+       color: #ccc;
+       border-radius: 2px;
+       padding: 6px 14px;
+       border: 2px solid #ccc;
+       font-size: 16px;
+       background: transparent;
+       cursor: pointer;
+
+       &:hover {
+               color: #fff;
+               border-color: #fff;
+       }
+}
+
+.reveal.paused .pause-overlay {
+       visibility: visible;
+       opacity: 1;
+}
+
+
+/*********************************************
+ * FALLBACK
+ *********************************************/
+
+.no-transforms {
+       overflow-y: auto;
+}
+
+.no-transforms .reveal {
+       overflow: visible;
+}
+
+.no-transforms .reveal .slides {
+       position: relative;
+       width: 80%;
+       max-width: 1280px;
+       height: auto;
+       top: 0;
+       margin: 0 auto;
+       text-align: center;
+}
+
+.no-transforms .reveal .controls,
+.no-transforms .reveal .progress {
+       display: none;
+}
+
+.no-transforms .reveal .slides section {
+       display: block;
+       opacity: 1;
+       position: relative;
+       height: auto;
+       min-height: 0;
+       top: 0;
+       left: 0;
+       margin: 10vh 0;
+       margin: 70px 0;
+       transform: none;
+}
+
+.reveal .no-transition,
+.reveal .no-transition * {
+       transition: none !important;
+}
+
+
+/*********************************************
+ * PER-SLIDE BACKGROUNDS
+ *********************************************/
+
+.reveal .backgrounds {
+       position: absolute;
+       width: 100%;
+       height: 100%;
+       top: 0;
+       left: 0;
+       perspective: 600px;
+}
+       .reveal .slide-background {
+               display: none;
+               position: absolute;
+               width: 100%;
+               height: 100%;
+               opacity: 0;
+               visibility: hidden;
+               overflow: hidden;
+
+               background-color: rgba( 0, 0, 0, 0 );
+
+               transition: all 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985);
+       }
+
+       .reveal .slide-background-content {
+               position: absolute;
+               width: 100%;
+               height: 100%;
+
+               background-position: 50% 50%;
+               background-repeat: no-repeat;
+               background-size: cover;
+       }
+
+       .reveal .slide-background.stack {
+               display: block;
+       }
+
+       .reveal .slide-background.present {
+               opacity: 1;
+               visibility: visible;
+               z-index: 2;
+       }
+
+       .print-pdf .reveal .slide-background {
+               opacity: 1 !important;
+               visibility: visible !important;
+       }
+
+/* Video backgrounds */
+.reveal .slide-background video {
+       position: absolute;
+       width: 100%;
+       height: 100%;
+       max-width: none;
+       max-height: none;
+       top: 0;
+       left: 0;
+       object-fit: cover;
+}
+       .reveal .slide-background[data-background-size="contain"] video {
+               object-fit: contain;
+       }
+
+/* Immediate transition style */
+.reveal[data-background-transition=none]>.backgrounds .slide-background,
+.reveal>.backgrounds .slide-background[data-background-transition=none] {
+       transition: none;
+}
+
+/* Slide */
+.reveal[data-background-transition=slide]>.backgrounds .slide-background,
+.reveal>.backgrounds .slide-background[data-background-transition=slide] {
+       opacity: 1;
+       backface-visibility: hidden;
+}
+       .reveal[data-background-transition=slide]>.backgrounds 
.slide-background.past,
+       .reveal>.backgrounds 
.slide-background.past[data-background-transition=slide] {
+               transform: translate(-100%, 0);
+       }
+       .reveal[data-background-transition=slide]>.backgrounds 
.slide-background.future,
+       .reveal>.backgrounds 
.slide-background.future[data-background-transition=slide] {
+               transform: translate(100%, 0);
+       }
+
+       .reveal[data-background-transition=slide]>.backgrounds 
.slide-background>.slide-background.past,
+       .reveal>.backgrounds 
.slide-background>.slide-background.past[data-background-transition=slide] {
+               transform: translate(0, -100%);
+       }
+       .reveal[data-background-transition=slide]>.backgrounds 
.slide-background>.slide-background.future,
+       .reveal>.backgrounds 
.slide-background>.slide-background.future[data-background-transition=slide] {
+               transform: translate(0, 100%);
+       }
+
+
+/* Convex */
+.reveal[data-background-transition=convex]>.backgrounds .slide-background.past,
+.reveal>.backgrounds .slide-background.past[data-background-transition=convex] 
{
+       opacity: 0;
+       transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 
0, 0);
+}
+.reveal[data-background-transition=convex]>.backgrounds 
.slide-background.future,
+.reveal>.backgrounds 
.slide-background.future[data-background-transition=convex] {
+       opacity: 0;
+       transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 
0);
+}
+
+.reveal[data-background-transition=convex]>.backgrounds 
.slide-background>.slide-background.past,
+.reveal>.backgrounds 
.slide-background>.slide-background.past[data-background-transition=convex] {
+       opacity: 0;
+       transform: translate3d(0, -100%, 0) rotateX(90deg) translate3d(0, 
-100%, 0);
+}
+.reveal[data-background-transition=convex]>.backgrounds 
.slide-background>.slide-background.future,
+.reveal>.backgrounds 
.slide-background>.slide-background.future[data-background-transition=convex] {
+       opacity: 0;
+       transform: translate3d(0, 100%, 0) rotateX(-90deg) translate3d(0, 100%, 
0);
+}
+
+
+/* Concave */
+.reveal[data-background-transition=concave]>.backgrounds 
.slide-background.past,
+.reveal>.backgrounds 
.slide-background.past[data-background-transition=concave] {
+       opacity: 0;
+       transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 
0, 0);
+}
+.reveal[data-background-transition=concave]>.backgrounds 
.slide-background.future,
+.reveal>.backgrounds 
.slide-background.future[data-background-transition=concave] {
+       opacity: 0;
+       transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 
0);
+}
+
+.reveal[data-background-transition=concave]>.backgrounds 
.slide-background>.slide-background.past,
+.reveal>.backgrounds 
.slide-background>.slide-background.past[data-background-transition=concave] {
+       opacity: 0;
+       transform: translate3d(0, -100%, 0) rotateX(-90deg) translate3d(0, 
-100%, 0);
+}
+.reveal[data-background-transition=concave]>.backgrounds 
.slide-background>.slide-background.future,
+.reveal>.backgrounds 
.slide-background>.slide-background.future[data-background-transition=concave] {
+       opacity: 0;
+       transform: translate3d(0, 100%, 0) rotateX(90deg) translate3d(0, 100%, 
0);
+}
+
+/* Zoom */
+.reveal[data-background-transition=zoom]>.backgrounds .slide-background,
+.reveal>.backgrounds .slide-background[data-background-transition=zoom] {
+       transition-timing-function: ease;
+}
+
+.reveal[data-background-transition=zoom]>.backgrounds .slide-background.past,
+.reveal>.backgrounds .slide-background.past[data-background-transition=zoom] {
+       opacity: 0;
+       visibility: hidden;
+       transform: scale(16);
+}
+.reveal[data-background-transition=zoom]>.backgrounds .slide-background.future,
+.reveal>.backgrounds .slide-background.future[data-background-transition=zoom] 
{
+       opacity: 0;
+       visibility: hidden;
+       transform: scale(0.2);
+}
+
+.reveal[data-background-transition=zoom]>.backgrounds 
.slide-background>.slide-background.past,
+.reveal>.backgrounds 
.slide-background>.slide-background.past[data-background-transition=zoom] {
+       opacity: 0;
+               visibility: hidden;
+               transform: scale(16);
+}
+.reveal[data-background-transition=zoom]>.backgrounds 
.slide-background>.slide-background.future,
+.reveal>.backgrounds 
.slide-background>.slide-background.future[data-background-transition=zoom] {
+       opacity: 0;
+       visibility: hidden;
+       transform: scale(0.2);
+}
+
+
+/* Global transition speed settings */
+.reveal[data-transition-speed="fast"]>.backgrounds .slide-background {
+       transition-duration: 400ms;
+}
+.reveal[data-transition-speed="slow"]>.backgrounds .slide-background {
+       transition-duration: 1200ms;
+}
+
+
+/*********************************************
+ * OVERVIEW
+ *********************************************/
+
+.reveal.overview {
+       perspective-origin: 50% 50%;
+       perspective: 700px;
+
+       .slides {
+               // Fixes overview rendering errors in FF48+, not applied to
+               // other browsers since it degrades performance
+               -moz-transform-style: preserve-3d;
+       }
+
+       .slides section {
+               height: 100%;
+               top: 0 !important;
+               opacity: 1 !important;
+               overflow: hidden;
+               visibility: visible !important;
+               cursor: pointer;
+               box-sizing: border-box;
+       }
+       .slides section:hover,
+       .slides section.present {
+               outline: 10px solid rgba(150,150,150,0.4);
+               outline-offset: 10px;
+       }
+       .slides section .fragment {
+               opacity: 1;
+               transition: none;
+       }
+       .slides section:after,
+       .slides section:before {
+               display: none !important;
+       }
+       .slides>section.stack {
+               padding: 0;
+               top: 0 !important;
+               background: none;
+               outline: none;
+               overflow: visible;
+       }
+
+       .backgrounds {
+               perspective: inherit;
+
+               // Fixes overview rendering errors in FF48+, not applied to
+               // other browsers since it degrades performance
+               -moz-transform-style: preserve-3d;
+       }
+
+       .backgrounds .slide-background {
+               opacity: 1;
+               visibility: visible;
+
+               // This can't be applied to the slide itself in Safari
+               outline: 10px solid rgba(150,150,150,0.1);
+               outline-offset: 10px;
+       }
+
+       .backgrounds .slide-background.stack {
+               overflow: visible;
+       }
+}
+
+// Disable transitions transitions while we're activating
+// or deactivating the overview mode.
+.reveal.overview .slides section,
+.reveal.overview-deactivating .slides section {
+       transition: none;
+}
+
+.reveal.overview .backgrounds .slide-background,
+.reveal.overview-deactivating .backgrounds .slide-background {
+       transition: none;
+}
+
+
+/*********************************************
+ * RTL SUPPORT
+ *********************************************/
+
+.reveal.rtl .slides,
+.reveal.rtl .slides h1,
+.reveal.rtl .slides h2,
+.reveal.rtl .slides h3,
+.reveal.rtl .slides h4,
+.reveal.rtl .slides h5,
+.reveal.rtl .slides h6 {
+       direction: rtl;
+       font-family: sans-serif;
+}
+
+.reveal.rtl pre,
+.reveal.rtl code {
+       direction: ltr;
+}
+
+.reveal.rtl ol,
+.reveal.rtl ul {
+       text-align: right;
+}
+
+.reveal.rtl .progress span {
+       float: right
+}
+
+/*********************************************
+ * PARALLAX BACKGROUND
+ *********************************************/
+
+.reveal.has-parallax-background .backgrounds {
+       transition: all 0.8s ease;
+}
+
+/* Global transition speed settings */
+.reveal.has-parallax-background[data-transition-speed="fast"] .backgrounds {
+       transition-duration: 400ms;
+}
+.reveal.has-parallax-background[data-transition-speed="slow"] .backgrounds {
+       transition-duration: 1200ms;
+}
+
+
+/*********************************************
+ * OVERLAY FOR LINK PREVIEWS AND HELP
+ *********************************************/
+
+.reveal > .overlay {
+       position: absolute;
+       top: 0;
+       left: 0;
+       width: 100%;
+       height: 100%;
+       z-index: 1000;
+       background: rgba( 0, 0, 0, 0.9 );
+       opacity: 0;
+       visibility: hidden;
+       transition: all 0.3s ease;
+}
+       .reveal > .overlay.visible {
+               opacity: 1;
+               visibility: visible;
+       }
+
+       .reveal > .overlay .spinner {
+               position: absolute;
+               display: block;
+               top: 50%;
+               left: 50%;
+               width: 32px;
+               height: 32px;
+               margin: -16px 0 0 -16px;
+               z-index: 10;
+               background-image: 
url(data:image/gif;base64,R0lGODlhIAAgAPMAAJmZmf%2F%2F%2F6%2Bvr8nJybW1tcDAwOjo6Nvb26ioqKOjo7Ozs%2FLy8vz8%2FAAAAAAAAAAAACH%2FC05FVFNDQVBFMi4wAwEAAAAh%2FhpDcmVhdGVkIHdpdGggYWpheGxvYWQuaW5mbwAh%2BQQJCgAAACwAAAAAIAAgAAAE5xDISWlhperN52JLhSSdRgwVo1ICQZRUsiwHpTJT4iowNS8vyW2icCF6k8HMMBkCEDskxTBDAZwuAkkqIfxIQyhBQBFvAQSDITM5VDW6XNE4KagNh6Bgwe60smQUB3d4Rz1ZBApnFASDd0hihh12BkE9kjAJVlycXIg7CQIFA6SlnJ87paqbSKiKoqusnbMdmDC2tXQlkUhziYtyWTxIfy6BE8WJt5YJvpJivxNaGmLHT0VnOgSYf0dZXS7APdpB
 [...]
+
+               visibility: visible;
+               opacity: 0.6;
+               transition: all 0.3s ease;
+       }
+
+       .reveal > .overlay header {
+               position: absolute;
+               left: 0;
+               top: 0;
+               width: 100%;
+               height: 40px;
+               z-index: 2;
+               border-bottom: 1px solid #222;
+       }
+               .reveal > .overlay header a {
+                       display: inline-block;
+                       width: 40px;
+                       height: 40px;
+                       line-height: 36px;
+                       padding: 0 10px;
+                       float: right;
+                       opacity: 0.6;
+
+                       box-sizing: border-box;
+               }
+                       .reveal > .overlay header a:hover {
+                               opacity: 1;
+                       }
+                       .reveal > .overlay header a .icon {
+                               display: inline-block;
+                               width: 20px;
+                               height: 20px;
+
+                               background-position: 50% 50%;
+                               background-size: 100%;
+                               background-repeat: no-repeat;
+                       }
+                       .reveal > .overlay header a.close .icon {
+                               background-image: 
url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAABkklEQVRYR8WX4VHDMAxG6wnoJrABZQPYBCaBTWAD2g1gE5gg6OOsXuxIlr40d81dfrSJ9V4c2VLK7spHuTJ/5wpM07QXuXc5X0opX2tEJcadjHuV80li/FgxTIEK/5QBCICBD6xEhSMGHgQPgBgLiYVAB1dpSqKDawxTohFw4JSEA3clzgIBPCURwE2JucBR7rhPJJv5OpJwDX+SfDjgx1wACQeJG1aChP9K/IMmdZ8DtESV1WyP3Bt4MwM6sj4NMxMYiqUWHQu4KYA/SYkIjOsm3BXYWMKFDwU2khjCQ4ELJUJ4SmClRArOCmSXGuKma0fYD5CbzHxFpCSGAhfAVSSUGDUk2BWZaff2g6GE15BsBQ9nwmpIGDiyHQddwNTMKkbZaf9fajXQ
 [...]
+                       }
+                       .reveal > .overlay header a.external .icon {
+                               background-image: 
url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAcElEQVRYR+2WSQoAIQwEzf8f7XiOMkUQxUPlGkM3hVmiQfQR9GYnH1SsAQlI4DiBqkCMoNb9y2e90IAEJPAcgdznU9+engMaeJ7Azh5Y1U67gAho4DqBqmB1buAf0MB1AlVBek83ZPkmJMGc1wAR+AAqod/B97TRpQAAAABJRU5ErkJggg==);
+                       }
+
+       .reveal > .overlay .viewport {
+               position: absolute;
+               display: flex;
+               top: 40px;
+               right: 0;
+               bottom: 0;
+               left: 0;
+       }
+
+       .reveal > .overlay.overlay-preview .viewport iframe {
+               width: 100%;
+               height: 100%;
+               max-width: 100%;
+               max-height: 100%;
+               border: 0;
+
+               opacity: 0;
+               visibility: hidden;
+               transition: all 0.3s ease;
+       }
+
+       .reveal > .overlay.overlay-preview.loaded .viewport iframe {
+               opacity: 1;
+               visibility: visible;
+       }
+
+       .reveal > .overlay.overlay-preview.loaded .viewport-inner  {
+               position: absolute;
+               z-index: -1;
+               left: 0;
+               top: 45%;
+               width: 100%;
+               text-align: center;
+               letter-spacing: normal;
+       }
+       .reveal > .overlay.overlay-preview .x-frame-error  {
+               opacity: 0;
+               transition: opacity 0.3s ease 0.3s;
+       }
+       .reveal > .overlay.overlay-preview.loaded .x-frame-error  {
+               opacity: 1;
+       }
+
+       .reveal > .overlay.overlay-preview.loaded .spinner {
+               opacity: 0;
+               visibility: hidden;
+               transform: scale(0.2);
+       }
+
+       .reveal > .overlay.overlay-help .viewport {
+               overflow: auto;
+               color: #fff;
+       }
+
+       .reveal > .overlay.overlay-help .viewport .viewport-inner {
+               width: 600px;
+               margin: auto;
+               padding: 20px 20px 80px 20px;
+               text-align: center;
+               letter-spacing: normal;
+       }
+
+       .reveal > .overlay.overlay-help .viewport .viewport-inner .title {
+               font-size: 20px;
+       }
+
+       .reveal > .overlay.overlay-help .viewport .viewport-inner table {
+               border: 1px solid #fff;
+               border-collapse: collapse;
+               font-size: 16px;
+       }
+
+       .reveal > .overlay.overlay-help .viewport .viewport-inner table th,
+       .reveal > .overlay.overlay-help .viewport .viewport-inner table td {
+               width: 200px;
+               padding: 14px;
+               border: 1px solid #fff;
+               vertical-align: middle;
+       }
+
+       .reveal > .overlay.overlay-help .viewport .viewport-inner table th {
+               padding-top: 20px;
+               padding-bottom: 20px;
+       }
+
+
+/*********************************************
+ * PLAYBACK COMPONENT
+ *********************************************/
+
+.reveal .playback {
+       position: absolute;
+       left: 15px;
+       bottom: 20px;
+       z-index: 30;
+       cursor: pointer;
+       transition: all 400ms ease;
+       -webkit-tap-highlight-color: rgba( 0, 0, 0, 0 );
+}
+
+.reveal.overview .playback {
+       opacity: 0;
+       visibility: hidden;
+}
+
+
+/*********************************************
+ * CODE HIGHLGIHTING
+ *********************************************/
+
+.reveal .hljs table {
+       margin: initial;
+}
+
+.reveal .hljs-ln-code,
+.reveal .hljs-ln-numbers {
+       padding: 0;
+       border: 0;
+}
+
+.reveal .hljs-ln-numbers {
+       opacity: 0.6;
+       padding-right: 0.75em;
+       text-align: right;
+       vertical-align: top;
+}
+
+.reveal .hljs[data-line-numbers]:not([data-line-numbers=""]) 
tr:not(.highlight-line) {
+       opacity: 0.4;
+}
+
+
+/*********************************************
+ * ROLLING LINKS
+ *********************************************/
+
+.reveal .roll {
+       display: inline-block;
+       line-height: 1.2;
+       overflow: hidden;
+
+       vertical-align: top;
+       perspective: 400px;
+       perspective-origin: 50% 50%;
+}
+       .reveal .roll:hover {
+               background: none;
+               text-shadow: none;
+       }
+.reveal .roll span {
+       display: block;
+       position: relative;
+       padding: 0 2px;
+
+       pointer-events: none;
+       transition: all 400ms ease;
+       transform-origin: 50% 0%;
+       transform-style: preserve-3d;
+       backface-visibility: hidden;
+}
+       .reveal .roll:hover span {
+           background: rgba(0,0,0,0.5);
+           transform: translate3d( 0px, 0px, -45px ) rotateX( 90deg );
+       }
+.reveal .roll span:after {
+       content: attr(data-title);
+
+       display: block;
+       position: absolute;
+       left: 0;
+       top: 0;
+       padding: 0 2px;
+       backface-visibility: hidden;
+       transform-origin: 50% 0%;
+       transform: translate3d( 0px, 110%, 0px ) rotateX( -90deg );
+}
+
+
+/*********************************************
+ * SPEAKER NOTES
+ *********************************************/
+
+$notesWidthPercent: 25%;
+
+// Hide on-page notes
+.reveal aside.notes {
+       display: none;
+}
+
+// An interface element that can optionally be used to show the
+// speaker notes to all viewers, on top of the presentation
+.reveal .speaker-notes {
+       display: none;
+       position: absolute;
+       width: $notesWidthPercent / (1-$notesWidthPercent/100) * 1%;
+       height: 100%;
+       top: 0;
+       left: 100%;
+       padding: 14px 18px 14px 18px;
+       z-index: 1;
+       font-size: 18px;
+       line-height: 1.4;
+       border: 1px solid rgba( 0, 0, 0, 0.05 );
+       color: #222;
+       background-color: #f5f5f5;
+       overflow: auto;
+       box-sizing: border-box;
+       text-align: left;
+       font-family: Helvetica, sans-serif;
+       -webkit-overflow-scrolling: touch;
+
+       .notes-placeholder {
+               color: #ccc;
+               font-style: italic;
+       }
+
+       &:focus {
+               outline: none;
+       }
+
+       &:before {
+               content: 'Speaker notes';
+               display: block;
+               margin-bottom: 10px;
+               opacity: 0.5;
+       }
+}
+
+
+.reveal.show-notes {
+       max-width: 100% - $notesWidthPercent;
+       overflow: visible;
+}
+
+.reveal.show-notes .speaker-notes {
+       display: block;
+}
+
+@media screen and (min-width: 1600px) {
+       .reveal .speaker-notes {
+               font-size: 20px;
+       }
+}
+
+@media screen and (max-width: 1024px) {
+       .reveal.show-notes {
+               border-left: 0;
+               max-width: none;
+               max-height: 70%;
+               max-height: 70vh;
+               overflow: visible;
+       }
+
+       .reveal.show-notes .speaker-notes {
+               top: 100%;
+               left: 0;
+               width: 100%;
+               height: (30/0.7)*1%;
+               height: 30vh;
+               border: 0;
+       }
+}
+
+@media screen and (max-width: 600px) {
+       .reveal.show-notes {
+               max-height: 60%;
+               max-height: 60vh;
+       }
+
+       .reveal.show-notes .speaker-notes {
+               top: 100%;
+               height: (40/0.6)*1%;
+               height: 40vh;
+       }
+
+       .reveal .speaker-notes {
+               font-size: 14px;
+       }
+}
+
+
+/*********************************************
+ * ZOOM PLUGIN
+ *********************************************/
+
+.zoomed .reveal *,
+.zoomed .reveal *:before,
+.zoomed .reveal *:after {
+       backface-visibility: visible !important;
+}
+
+.zoomed .reveal .progress,
+.zoomed .reveal .controls {
+       opacity: 0;
+}
+
+.zoomed .reveal .roll span {
+       background: none;
+}
+
+.zoomed .reveal .roll span:after {
+       visibility: hidden;
+}
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/README.md 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/README.md
new file mode 100644
index 0000000..8ae164b
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/README.md
@@ -0,0 +1,21 @@
+## Dependencies
+
+Themes are written using Sass to keep things modular and reduce the need for 
repeated selectors across files. Make sure that you have the reveal.js 
development environment including the Grunt dependencies installed before 
proceeding: https://github.com/hakimel/reveal.js#full-setup
+
+## Creating a Theme
+
+To create your own theme, start by duplicating a ```.scss``` file in 
[/css/theme/source](https://github.com/hakimel/reveal.js/blob/master/css/theme/source).
 It will be automatically compiled by Grunt from Sass to CSS (see the 
[Gruntfile](https://github.com/hakimel/reveal.js/blob/master/Gruntfile.js)) 
when you run `npm run build -- css-themes`.
+
+Each theme file does four things in the following order:
+
+1. **Include 
[/css/theme/template/mixins.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/mixins.scss)**
+Shared utility functions.
+
+2. **Include 
[/css/theme/template/settings.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/settings.scss)**
+Declares a set of custom variables that the template file (step 4) expects. 
Can be overridden in step 3.
+
+3. **Override**
+This is where you override the default theme. Either by specifying variables 
(see 
[settings.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/settings.scss)
 for reference) or by adding any selectors and styles you please.
+
+4. **Include 
[/css/theme/template/theme.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/theme.scss)**
+The template theme file which will generate final CSS output based on the 
currently defined variables.
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/beige.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/beige.css
new file mode 100644
index 0000000..615dd6d
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/beige.css
@@ -0,0 +1,277 @@
+/**
+ * Beige theme for reveal.js.
+ *
+ * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ */
+@import url(../../lib/font/league-gothic/league-gothic.css);
+@import 
url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+body {
+  background: #f7f2d3;
+  background: -moz-radial-gradient(center, circle cover, white 0%, #f7f2d3 
100%);
+  background: -webkit-gradient(radial, center center, 0px, center center, 
100%, color-stop(0%, white), color-stop(100%, #f7f2d3));
+  background: -webkit-radial-gradient(center, circle cover, white 0%, #f7f2d3 
100%);
+  background: -o-radial-gradient(center, circle cover, white 0%, #f7f2d3 100%);
+  background: -ms-radial-gradient(center, circle cover, white 0%, #f7f2d3 
100%);
+  background: radial-gradient(center, circle cover, white 0%, #f7f2d3 100%);
+  background-color: #f7f3de; }
+
+.reveal {
+  font-family: "Lato", sans-serif;
+  font-size: 40px;
+  font-weight: normal;
+  color: #333; }
+
+::selection {
+  color: #fff;
+  background: rgba(79, 64, 28, 0.99);
+  text-shadow: none; }
+
+::-moz-selection {
+  color: #fff;
+  background: rgba(79, 64, 28, 0.99);
+  text-shadow: none; }
+
+.reveal .slides section,
+.reveal .slides section > section {
+  line-height: 1.3;
+  font-weight: inherit; }
+
+/*********************************************
+ * HEADERS
+ *********************************************/
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+  margin: 0 0 20px 0;
+  color: #333;
+  font-family: "League Gothic", Impact, sans-serif;
+  font-weight: normal;
+  line-height: 1.2;
+  letter-spacing: normal;
+  text-transform: uppercase;
+  text-shadow: none;
+  word-wrap: break-word; }
+
+.reveal h1 {
+  font-size: 3.77em; }
+
+.reveal h2 {
+  font-size: 2.11em; }
+
+.reveal h3 {
+  font-size: 1.55em; }
+
+.reveal h4 {
+  font-size: 1em; }
+
+.reveal h1 {
+  text-shadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 #b9b9b9, 0 
5px 0 #aaa, 0 6px 1px rgba(0, 0, 0, 0.1), 0 0 5px rgba(0, 0, 0, 0.1), 0 1px 3px 
rgba(0, 0, 0, 0.3), 0 3px 5px rgba(0, 0, 0, 0.2), 0 5px 10px rgba(0, 0, 0, 
0.25), 0 20px 20px rgba(0, 0, 0, 0.15); }
+
+/*********************************************
+ * OTHER
+ *********************************************/
+.reveal p {
+  margin: 20px 0;
+  line-height: 1.3; }
+
+/* Ensure certain elements are never larger than the slide itself */
+.reveal img,
+.reveal video,
+.reveal iframe {
+  max-width: 95%;
+  max-height: 95%; }
+
+.reveal strong,
+.reveal b {
+  font-weight: bold; }
+
+.reveal em {
+  font-style: italic; }
+
+.reveal ol,
+.reveal dl,
+.reveal ul {
+  display: inline-block;
+  text-align: left;
+  margin: 0 0 0 1em; }
+
+.reveal ol {
+  list-style-type: decimal; }
+
+.reveal ul {
+  list-style-type: disc; }
+
+.reveal ul ul {
+  list-style-type: square; }
+
+.reveal ul ul ul {
+  list-style-type: circle; }
+
+.reveal ul ul,
+.reveal ul ol,
+.reveal ol ol,
+.reveal ol ul {
+  display: block;
+  margin-left: 40px; }
+
+.reveal dt {
+  font-weight: bold; }
+
+.reveal dd {
+  margin-left: 40px; }
+
+.reveal blockquote {
+  display: block;
+  position: relative;
+  width: 70%;
+  margin: 20px auto;
+  padding: 5px;
+  font-style: italic;
+  background: rgba(255, 255, 255, 0.05);
+  box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); }
+
+.reveal blockquote p:first-child,
+.reveal blockquote p:last-child {
+  display: inline-block; }
+
+.reveal q {
+  font-style: italic; }
+
+.reveal pre {
+  display: block;
+  position: relative;
+  width: 90%;
+  margin: 20px auto;
+  text-align: left;
+  font-size: 0.55em;
+  font-family: monospace;
+  line-height: 1.2em;
+  word-wrap: break-word;
+  box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.15); }
+
+.reveal code {
+  font-family: monospace;
+  text-transform: none; }
+
+.reveal pre code {
+  display: block;
+  padding: 5px;
+  overflow: auto;
+  max-height: 400px;
+  word-wrap: normal; }
+
+.reveal table {
+  margin: auto;
+  border-collapse: collapse;
+  border-spacing: 0; }
+
+.reveal table th {
+  font-weight: bold; }
+
+.reveal table th,
+.reveal table td {
+  text-align: left;
+  padding: 0.2em 0.5em 0.2em 0.5em;
+  border-bottom: 1px solid; }
+
+.reveal table th[align="center"],
+.reveal table td[align="center"] {
+  text-align: center; }
+
+.reveal table th[align="right"],
+.reveal table td[align="right"] {
+  text-align: right; }
+
+.reveal table tbody tr:last-child th,
+.reveal table tbody tr:last-child td {
+  border-bottom: none; }
+
+.reveal sup {
+  vertical-align: super;
+  font-size: smaller; }
+
+.reveal sub {
+  vertical-align: sub;
+  font-size: smaller; }
+
+.reveal small {
+  display: inline-block;
+  font-size: 0.6em;
+  line-height: 1.2em;
+  vertical-align: top; }
+
+.reveal small * {
+  vertical-align: top; }
+
+/*********************************************
+ * LINKS
+ *********************************************/
+.reveal a {
+  color: #8b743d;
+  text-decoration: none;
+  -webkit-transition: color .15s ease;
+  -moz-transition: color .15s ease;
+  transition: color .15s ease; }
+
+.reveal a:hover {
+  color: #c0a86e;
+  text-shadow: none;
+  border: none; }
+
+.reveal .roll span:after {
+  color: #fff;
+  background: #564826; }
+
+/*********************************************
+ * IMAGES
+ *********************************************/
+.reveal section img {
+  margin: 15px 0px;
+  background: rgba(255, 255, 255, 0.12);
+  border: 4px solid #333;
+  box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
+
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
+.reveal a img {
+  -webkit-transition: all .15s linear;
+  -moz-transition: all .15s linear;
+  transition: all .15s linear; }
+
+.reveal a:hover img {
+  background: rgba(255, 255, 255, 0.2);
+  border-color: #8b743d;
+  box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); }
+
+/*********************************************
+ * NAVIGATION CONTROLS
+ *********************************************/
+.reveal .controls {
+  color: #8b743d; }
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+.reveal .progress {
+  background: rgba(0, 0, 0, 0.2);
+  color: #8b743d; }
+
+.reveal .progress span {
+  -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+/*********************************************
+ * PRINT BACKGROUND
+ *********************************************/
+@media print {
+  .backgrounds {
+    background-color: #f7f3de; } }
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/black.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/black.css
new file mode 100644
index 0000000..7dd88c2
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/black.css
@@ -0,0 +1,273 @@
+/**
+ * Black theme for reveal.js. This is the opposite of the 'white' theme.
+ *
+ * By Hakim El Hattab, http://hakim.se
+ */
+@import url(../../lib/font/source-sans-pro/source-sans-pro.css);
+section.has-light-background, section.has-light-background h1, 
section.has-light-background h2, section.has-light-background h3, 
section.has-light-background h4, section.has-light-background h5, 
section.has-light-background h6 {
+  color: #222; }
+
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+body {
+  background: #191919;
+  background-color: #191919; }
+
+.reveal {
+  font-family: "Source Sans Pro", Helvetica, sans-serif;
+  font-size: 42px;
+  font-weight: normal;
+  color: #fff; }
+
+::selection {
+  color: #fff;
+  background: #bee4fd;
+  text-shadow: none; }
+
+::-moz-selection {
+  color: #fff;
+  background: #bee4fd;
+  text-shadow: none; }
+
+.reveal .slides section,
+.reveal .slides section > section {
+  line-height: 1.3;
+  font-weight: inherit; }
+
+/*********************************************
+ * HEADERS
+ *********************************************/
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+  margin: 0 0 20px 0;
+  color: #fff;
+  font-family: "Source Sans Pro", Helvetica, sans-serif;
+  font-weight: 600;
+  line-height: 1.2;
+  letter-spacing: normal;
+  text-transform: uppercase;
+  text-shadow: none;
+  word-wrap: break-word; }
+
+.reveal h1 {
+  font-size: 2.5em; }
+
+.reveal h2 {
+  font-size: 1.6em; }
+
+.reveal h3 {
+  font-size: 1.3em; }
+
+.reveal h4 {
+  font-size: 1em; }
+
+.reveal h1 {
+  text-shadow: none; }
+
+/*********************************************
+ * OTHER
+ *********************************************/
+.reveal p {
+  margin: 20px 0;
+  line-height: 1.3; }
+
+/* Ensure certain elements are never larger than the slide itself */
+.reveal img,
+.reveal video,
+.reveal iframe {
+  max-width: 95%;
+  max-height: 95%; }
+
+.reveal strong,
+.reveal b {
+  font-weight: bold; }
+
+.reveal em {
+  font-style: italic; }
+
+.reveal ol,
+.reveal dl,
+.reveal ul {
+  display: inline-block;
+  text-align: left;
+  margin: 0 0 0 1em; }
+
+.reveal ol {
+  list-style-type: decimal; }
+
+.reveal ul {
+  list-style-type: disc; }
+
+.reveal ul ul {
+  list-style-type: square; }
+
+.reveal ul ul ul {
+  list-style-type: circle; }
+
+.reveal ul ul,
+.reveal ul ol,
+.reveal ol ol,
+.reveal ol ul {
+  display: block;
+  margin-left: 40px; }
+
+.reveal dt {
+  font-weight: bold; }
+
+.reveal dd {
+  margin-left: 40px; }
+
+.reveal blockquote {
+  display: block;
+  position: relative;
+  width: 70%;
+  margin: 20px auto;
+  padding: 5px;
+  font-style: italic;
+  background: rgba(255, 255, 255, 0.05);
+  box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); }
+
+.reveal blockquote p:first-child,
+.reveal blockquote p:last-child {
+  display: inline-block; }
+
+.reveal q {
+  font-style: italic; }
+
+.reveal pre {
+  display: block;
+  position: relative;
+  width: 90%;
+  margin: 20px auto;
+  text-align: left;
+  font-size: 0.55em;
+  font-family: monospace;
+  line-height: 1.2em;
+  word-wrap: break-word;
+  box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.15); }
+
+.reveal code {
+  font-family: monospace;
+  text-transform: none; }
+
+.reveal pre code {
+  display: block;
+  padding: 5px;
+  overflow: auto;
+  max-height: 400px;
+  word-wrap: normal; }
+
+.reveal table {
+  margin: auto;
+  border-collapse: collapse;
+  border-spacing: 0; }
+
+.reveal table th {
+  font-weight: bold; }
+
+.reveal table th,
+.reveal table td {
+  text-align: left;
+  padding: 0.2em 0.5em 0.2em 0.5em;
+  border-bottom: 1px solid; }
+
+.reveal table th[align="center"],
+.reveal table td[align="center"] {
+  text-align: center; }
+
+.reveal table th[align="right"],
+.reveal table td[align="right"] {
+  text-align: right; }
+
+.reveal table tbody tr:last-child th,
+.reveal table tbody tr:last-child td {
+  border-bottom: none; }
+
+.reveal sup {
+  vertical-align: super;
+  font-size: smaller; }
+
+.reveal sub {
+  vertical-align: sub;
+  font-size: smaller; }
+
+.reveal small {
+  display: inline-block;
+  font-size: 0.6em;
+  line-height: 1.2em;
+  vertical-align: top; }
+
+.reveal small * {
+  vertical-align: top; }
+
+/*********************************************
+ * LINKS
+ *********************************************/
+.reveal a {
+  color: #42affa;
+  text-decoration: none;
+  -webkit-transition: color .15s ease;
+  -moz-transition: color .15s ease;
+  transition: color .15s ease; }
+
+.reveal a:hover {
+  color: #8dcffc;
+  text-shadow: none;
+  border: none; }
+
+.reveal .roll span:after {
+  color: #fff;
+  background: #068de9; }
+
+/*********************************************
+ * IMAGES
+ *********************************************/
+.reveal section img {
+  margin: 15px 0px;
+  background: rgba(255, 255, 255, 0.12);
+  border: 4px solid #fff;
+  box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
+
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
+.reveal a img {
+  -webkit-transition: all .15s linear;
+  -moz-transition: all .15s linear;
+  transition: all .15s linear; }
+
+.reveal a:hover img {
+  background: rgba(255, 255, 255, 0.2);
+  border-color: #42affa;
+  box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); }
+
+/*********************************************
+ * NAVIGATION CONTROLS
+ *********************************************/
+.reveal .controls {
+  color: #42affa; }
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+.reveal .progress {
+  background: rgba(0, 0, 0, 0.2);
+  color: #42affa; }
+
+.reveal .progress span {
+  -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+/*********************************************
+ * PRINT BACKGROUND
+ *********************************************/
+@media print {
+  .backgrounds {
+    background-color: #191919; } }
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/blood.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/blood.css
new file mode 100644
index 0000000..5cbd488
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/blood.css
@@ -0,0 +1,296 @@
+/**
+ * Blood theme for reveal.js
+ * Author: Walther http://github.com/Walther
+ *
+ * Designed to be used with highlight.js theme
+ * "monokai_sublime.css" available from
+ * https://github.com/isagalaev/highlight.js/
+ *
+ * For other themes, change $codeBackground accordingly.
+ *
+ */
+@import 
url(https://fonts.googleapis.com/css?family=Ubuntu:300,700,300italic,700italic);
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+body {
+  background: #222;
+  background-color: #222; }
+
+.reveal {
+  font-family: Ubuntu, "sans-serif";
+  font-size: 40px;
+  font-weight: normal;
+  color: #eee; }
+
+::selection {
+  color: #fff;
+  background: #a23;
+  text-shadow: none; }
+
+::-moz-selection {
+  color: #fff;
+  background: #a23;
+  text-shadow: none; }
+
+.reveal .slides section,
+.reveal .slides section > section {
+  line-height: 1.3;
+  font-weight: inherit; }
+
+/*********************************************
+ * HEADERS
+ *********************************************/
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+  margin: 0 0 20px 0;
+  color: #eee;
+  font-family: Ubuntu, "sans-serif";
+  font-weight: normal;
+  line-height: 1.2;
+  letter-spacing: normal;
+  text-transform: uppercase;
+  text-shadow: 2px 2px 2px #222;
+  word-wrap: break-word; }
+
+.reveal h1 {
+  font-size: 3.77em; }
+
+.reveal h2 {
+  font-size: 2.11em; }
+
+.reveal h3 {
+  font-size: 1.55em; }
+
+.reveal h4 {
+  font-size: 1em; }
+
+.reveal h1 {
+  text-shadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 #b9b9b9, 0 
5px 0 #aaa, 0 6px 1px rgba(0, 0, 0, 0.1), 0 0 5px rgba(0, 0, 0, 0.1), 0 1px 3px 
rgba(0, 0, 0, 0.3), 0 3px 5px rgba(0, 0, 0, 0.2), 0 5px 10px rgba(0, 0, 0, 
0.25), 0 20px 20px rgba(0, 0, 0, 0.15); }
+
+/*********************************************
+ * OTHER
+ *********************************************/
+.reveal p {
+  margin: 20px 0;
+  line-height: 1.3; }
+
+/* Ensure certain elements are never larger than the slide itself */
+.reveal img,
+.reveal video,
+.reveal iframe {
+  max-width: 95%;
+  max-height: 95%; }
+
+.reveal strong,
+.reveal b {
+  font-weight: bold; }
+
+.reveal em {
+  font-style: italic; }
+
+.reveal ol,
+.reveal dl,
+.reveal ul {
+  display: inline-block;
+  text-align: left;
+  margin: 0 0 0 1em; }
+
+.reveal ol {
+  list-style-type: decimal; }
+
+.reveal ul {
+  list-style-type: disc; }
+
+.reveal ul ul {
+  list-style-type: square; }
+
+.reveal ul ul ul {
+  list-style-type: circle; }
+
+.reveal ul ul,
+.reveal ul ol,
+.reveal ol ol,
+.reveal ol ul {
+  display: block;
+  margin-left: 40px; }
+
+.reveal dt {
+  font-weight: bold; }
+
+.reveal dd {
+  margin-left: 40px; }
+
+.reveal blockquote {
+  display: block;
+  position: relative;
+  width: 70%;
+  margin: 20px auto;
+  padding: 5px;
+  font-style: italic;
+  background: rgba(255, 255, 255, 0.05);
+  box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); }
+
+.reveal blockquote p:first-child,
+.reveal blockquote p:last-child {
+  display: inline-block; }
+
+.reveal q {
+  font-style: italic; }
+
+.reveal pre {
+  display: block;
+  position: relative;
+  width: 90%;
+  margin: 20px auto;
+  text-align: left;
+  font-size: 0.55em;
+  font-family: monospace;
+  line-height: 1.2em;
+  word-wrap: break-word;
+  box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.15); }
+
+.reveal code {
+  font-family: monospace;
+  text-transform: none; }
+
+.reveal pre code {
+  display: block;
+  padding: 5px;
+  overflow: auto;
+  max-height: 400px;
+  word-wrap: normal; }
+
+.reveal table {
+  margin: auto;
+  border-collapse: collapse;
+  border-spacing: 0; }
+
+.reveal table th {
+  font-weight: bold; }
+
+.reveal table th,
+.reveal table td {
+  text-align: left;
+  padding: 0.2em 0.5em 0.2em 0.5em;
+  border-bottom: 1px solid; }
+
+.reveal table th[align="center"],
+.reveal table td[align="center"] {
+  text-align: center; }
+
+.reveal table th[align="right"],
+.reveal table td[align="right"] {
+  text-align: right; }
+
+.reveal table tbody tr:last-child th,
+.reveal table tbody tr:last-child td {
+  border-bottom: none; }
+
+.reveal sup {
+  vertical-align: super;
+  font-size: smaller; }
+
+.reveal sub {
+  vertical-align: sub;
+  font-size: smaller; }
+
+.reveal small {
+  display: inline-block;
+  font-size: 0.6em;
+  line-height: 1.2em;
+  vertical-align: top; }
+
+.reveal small * {
+  vertical-align: top; }
+
+/*********************************************
+ * LINKS
+ *********************************************/
+.reveal a {
+  color: #a23;
+  text-decoration: none;
+  -webkit-transition: color .15s ease;
+  -moz-transition: color .15s ease;
+  transition: color .15s ease; }
+
+.reveal a:hover {
+  color: #dd5566;
+  text-shadow: none;
+  border: none; }
+
+.reveal .roll span:after {
+  color: #fff;
+  background: #6a1520; }
+
+/*********************************************
+ * IMAGES
+ *********************************************/
+.reveal section img {
+  margin: 15px 0px;
+  background: rgba(255, 255, 255, 0.12);
+  border: 4px solid #eee;
+  box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
+
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
+.reveal a img {
+  -webkit-transition: all .15s linear;
+  -moz-transition: all .15s linear;
+  transition: all .15s linear; }
+
+.reveal a:hover img {
+  background: rgba(255, 255, 255, 0.2);
+  border-color: #a23;
+  box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); }
+
+/*********************************************
+ * NAVIGATION CONTROLS
+ *********************************************/
+.reveal .controls {
+  color: #a23; }
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+.reveal .progress {
+  background: rgba(0, 0, 0, 0.2);
+  color: #a23; }
+
+.reveal .progress span {
+  -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+/*********************************************
+ * PRINT BACKGROUND
+ *********************************************/
+@media print {
+  .backgrounds {
+    background-color: #222; } }
+
+.reveal p {
+  font-weight: 300;
+  text-shadow: 1px 1px #222; }
+
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+  font-weight: 700; }
+
+.reveal p code {
+  background-color: #23241f;
+  display: inline-block;
+  border-radius: 7px; }
+
+.reveal small code {
+  vertical-align: baseline; }
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/league.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/league.css
new file mode 100644
index 0000000..f8fba4d
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/league.css
@@ -0,0 +1,279 @@
+/**
+ * League theme for reveal.js.
+ *
+ * This was the default theme pre-3.0.0.
+ *
+ * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ */
+@import url(../../lib/font/league-gothic/league-gothic.css);
+@import 
url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+body {
+  background: #1c1e20;
+  background: -moz-radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 
100%);
+  background: -webkit-gradient(radial, center center, 0px, center center, 
100%, color-stop(0%, #555a5f), color-stop(100%, #1c1e20));
+  background: -webkit-radial-gradient(center, circle cover, #555a5f 0%, 
#1c1e20 100%);
+  background: -o-radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 
100%);
+  background: -ms-radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 
100%);
+  background: radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%);
+  background-color: #2b2b2b; }
+
+.reveal {
+  font-family: "Lato", sans-serif;
+  font-size: 40px;
+  font-weight: normal;
+  color: #eee; }
+
+::selection {
+  color: #fff;
+  background: #FF5E99;
+  text-shadow: none; }
+
+::-moz-selection {
+  color: #fff;
+  background: #FF5E99;
+  text-shadow: none; }
+
+.reveal .slides section,
+.reveal .slides section > section {
+  line-height: 1.3;
+  font-weight: inherit; }
+
+/*********************************************
+ * HEADERS
+ *********************************************/
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+  margin: 0 0 20px 0;
+  color: #eee;
+  font-family: "League Gothic", Impact, sans-serif;
+  font-weight: normal;
+  line-height: 1.2;
+  letter-spacing: normal;
+  text-transform: uppercase;
+  text-shadow: 0px 0px 6px rgba(0, 0, 0, 0.2);
+  word-wrap: break-word; }
+
+.reveal h1 {
+  font-size: 3.77em; }
+
+.reveal h2 {
+  font-size: 2.11em; }
+
+.reveal h3 {
+  font-size: 1.55em; }
+
+.reveal h4 {
+  font-size: 1em; }
+
+.reveal h1 {
+  text-shadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 #b9b9b9, 0 
5px 0 #aaa, 0 6px 1px rgba(0, 0, 0, 0.1), 0 0 5px rgba(0, 0, 0, 0.1), 0 1px 3px 
rgba(0, 0, 0, 0.3), 0 3px 5px rgba(0, 0, 0, 0.2), 0 5px 10px rgba(0, 0, 0, 
0.25), 0 20px 20px rgba(0, 0, 0, 0.15); }
+
+/*********************************************
+ * OTHER
+ *********************************************/
+.reveal p {
+  margin: 20px 0;
+  line-height: 1.3; }
+
+/* Ensure certain elements are never larger than the slide itself */
+.reveal img,
+.reveal video,
+.reveal iframe {
+  max-width: 95%;
+  max-height: 95%; }
+
+.reveal strong,
+.reveal b {
+  font-weight: bold; }
+
+.reveal em {
+  font-style: italic; }
+
+.reveal ol,
+.reveal dl,
+.reveal ul {
+  display: inline-block;
+  text-align: left;
+  margin: 0 0 0 1em; }
+
+.reveal ol {
+  list-style-type: decimal; }
+
+.reveal ul {
+  list-style-type: disc; }
+
+.reveal ul ul {
+  list-style-type: square; }
+
+.reveal ul ul ul {
+  list-style-type: circle; }
+
+.reveal ul ul,
+.reveal ul ol,
+.reveal ol ol,
+.reveal ol ul {
+  display: block;
+  margin-left: 40px; }
+
+.reveal dt {
+  font-weight: bold; }
+
+.reveal dd {
+  margin-left: 40px; }
+
+.reveal blockquote {
+  display: block;
+  position: relative;
+  width: 70%;
+  margin: 20px auto;
+  padding: 5px;
+  font-style: italic;
+  background: rgba(255, 255, 255, 0.05);
+  box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); }
+
+.reveal blockquote p:first-child,
+.reveal blockquote p:last-child {
+  display: inline-block; }
+
+.reveal q {
+  font-style: italic; }
+
+.reveal pre {
+  display: block;
+  position: relative;
+  width: 90%;
+  margin: 20px auto;
+  text-align: left;
+  font-size: 0.55em;
+  font-family: monospace;
+  line-height: 1.2em;
+  word-wrap: break-word;
+  box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.15); }
+
+.reveal code {
+  font-family: monospace;
+  text-transform: none; }
+
+.reveal pre code {
+  display: block;
+  padding: 5px;
+  overflow: auto;
+  max-height: 400px;
+  word-wrap: normal; }
+
+.reveal table {
+  margin: auto;
+  border-collapse: collapse;
+  border-spacing: 0; }
+
+.reveal table th {
+  font-weight: bold; }
+
+.reveal table th,
+.reveal table td {
+  text-align: left;
+  padding: 0.2em 0.5em 0.2em 0.5em;
+  border-bottom: 1px solid; }
+
+.reveal table th[align="center"],
+.reveal table td[align="center"] {
+  text-align: center; }
+
+.reveal table th[align="right"],
+.reveal table td[align="right"] {
+  text-align: right; }
+
+.reveal table tbody tr:last-child th,
+.reveal table tbody tr:last-child td {
+  border-bottom: none; }
+
+.reveal sup {
+  vertical-align: super;
+  font-size: smaller; }
+
+.reveal sub {
+  vertical-align: sub;
+  font-size: smaller; }
+
+.reveal small {
+  display: inline-block;
+  font-size: 0.6em;
+  line-height: 1.2em;
+  vertical-align: top; }
+
+.reveal small * {
+  vertical-align: top; }
+
+/*********************************************
+ * LINKS
+ *********************************************/
+.reveal a {
+  color: #13DAEC;
+  text-decoration: none;
+  -webkit-transition: color .15s ease;
+  -moz-transition: color .15s ease;
+  transition: color .15s ease; }
+
+.reveal a:hover {
+  color: #71e9f4;
+  text-shadow: none;
+  border: none; }
+
+.reveal .roll span:after {
+  color: #fff;
+  background: #0d99a5; }
+
+/*********************************************
+ * IMAGES
+ *********************************************/
+.reveal section img {
+  margin: 15px 0px;
+  background: rgba(255, 255, 255, 0.12);
+  border: 4px solid #eee;
+  box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
+
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
+.reveal a img {
+  -webkit-transition: all .15s linear;
+  -moz-transition: all .15s linear;
+  transition: all .15s linear; }
+
+.reveal a:hover img {
+  background: rgba(255, 255, 255, 0.2);
+  border-color: #13DAEC;
+  box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); }
+
+/*********************************************
+ * NAVIGATION CONTROLS
+ *********************************************/
+.reveal .controls {
+  color: #13DAEC; }
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+.reveal .progress {
+  background: rgba(0, 0, 0, 0.2);
+  color: #13DAEC; }
+
+.reveal .progress span {
+  -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+/*********************************************
+ * PRINT BACKGROUND
+ *********************************************/
+@media print {
+  .backgrounds {
+    background-color: #2b2b2b; } }
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/moon.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/moon.css
new file mode 100644
index 0000000..d18f526
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/moon.css
@@ -0,0 +1,277 @@
+/**
+ * Solarized Dark theme for reveal.js.
+ * Author: Achim Staebler
+ */
+@import url(../../lib/font/league-gothic/league-gothic.css);
+@import 
url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
+/**
+ * Solarized colors by Ethan Schoonover
+ */
+html * {
+  color-profile: sRGB;
+  rendering-intent: auto; }
+
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+body {
+  background: #002b36;
+  background-color: #002b36; }
+
+.reveal {
+  font-family: "Lato", sans-serif;
+  font-size: 40px;
+  font-weight: normal;
+  color: #93a1a1; }
+
+::selection {
+  color: #fff;
+  background: #d33682;
+  text-shadow: none; }
+
+::-moz-selection {
+  color: #fff;
+  background: #d33682;
+  text-shadow: none; }
+
+.reveal .slides section,
+.reveal .slides section > section {
+  line-height: 1.3;
+  font-weight: inherit; }
+
+/*********************************************
+ * HEADERS
+ *********************************************/
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+  margin: 0 0 20px 0;
+  color: #eee8d5;
+  font-family: "League Gothic", Impact, sans-serif;
+  font-weight: normal;
+  line-height: 1.2;
+  letter-spacing: normal;
+  text-transform: uppercase;
+  text-shadow: none;
+  word-wrap: break-word; }
+
+.reveal h1 {
+  font-size: 3.77em; }
+
+.reveal h2 {
+  font-size: 2.11em; }
+
+.reveal h3 {
+  font-size: 1.55em; }
+
+.reveal h4 {
+  font-size: 1em; }
+
+.reveal h1 {
+  text-shadow: none; }
+
+/*********************************************
+ * OTHER
+ *********************************************/
+.reveal p {
+  margin: 20px 0;
+  line-height: 1.3; }
+
+/* Ensure certain elements are never larger than the slide itself */
+.reveal img,
+.reveal video,
+.reveal iframe {
+  max-width: 95%;
+  max-height: 95%; }
+
+.reveal strong,
+.reveal b {
+  font-weight: bold; }
+
+.reveal em {
+  font-style: italic; }
+
+.reveal ol,
+.reveal dl,
+.reveal ul {
+  display: inline-block;
+  text-align: left;
+  margin: 0 0 0 1em; }
+
+.reveal ol {
+  list-style-type: decimal; }
+
+.reveal ul {
+  list-style-type: disc; }
+
+.reveal ul ul {
+  list-style-type: square; }
+
+.reveal ul ul ul {
+  list-style-type: circle; }
+
+.reveal ul ul,
+.reveal ul ol,
+.reveal ol ol,
+.reveal ol ul {
+  display: block;
+  margin-left: 40px; }
+
+.reveal dt {
+  font-weight: bold; }
+
+.reveal dd {
+  margin-left: 40px; }
+
+.reveal blockquote {
+  display: block;
+  position: relative;
+  width: 70%;
+  margin: 20px auto;
+  padding: 5px;
+  font-style: italic;
+  background: rgba(255, 255, 255, 0.05);
+  box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); }
+
+.reveal blockquote p:first-child,
+.reveal blockquote p:last-child {
+  display: inline-block; }
+
+.reveal q {
+  font-style: italic; }
+
+.reveal pre {
+  display: block;
+  position: relative;
+  width: 90%;
+  margin: 20px auto;
+  text-align: left;
+  font-size: 0.55em;
+  font-family: monospace;
+  line-height: 1.2em;
+  word-wrap: break-word;
+  box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.15); }
+
+.reveal code {
+  font-family: monospace;
+  text-transform: none; }
+
+.reveal pre code {
+  display: block;
+  padding: 5px;
+  overflow: auto;
+  max-height: 400px;
+  word-wrap: normal; }
+
+.reveal table {
+  margin: auto;
+  border-collapse: collapse;
+  border-spacing: 0; }
+
+.reveal table th {
+  font-weight: bold; }
+
+.reveal table th,
+.reveal table td {
+  text-align: left;
+  padding: 0.2em 0.5em 0.2em 0.5em;
+  border-bottom: 1px solid; }
+
+.reveal table th[align="center"],
+.reveal table td[align="center"] {
+  text-align: center; }
+
+.reveal table th[align="right"],
+.reveal table td[align="right"] {
+  text-align: right; }
+
+.reveal table tbody tr:last-child th,
+.reveal table tbody tr:last-child td {
+  border-bottom: none; }
+
+.reveal sup {
+  vertical-align: super;
+  font-size: smaller; }
+
+.reveal sub {
+  vertical-align: sub;
+  font-size: smaller; }
+
+.reveal small {
+  display: inline-block;
+  font-size: 0.6em;
+  line-height: 1.2em;
+  vertical-align: top; }
+
+.reveal small * {
+  vertical-align: top; }
+
+/*********************************************
+ * LINKS
+ *********************************************/
+.reveal a {
+  color: #268bd2;
+  text-decoration: none;
+  -webkit-transition: color .15s ease;
+  -moz-transition: color .15s ease;
+  transition: color .15s ease; }
+
+.reveal a:hover {
+  color: #78b9e6;
+  text-shadow: none;
+  border: none; }
+
+.reveal .roll span:after {
+  color: #fff;
+  background: #1a6091; }
+
+/*********************************************
+ * IMAGES
+ *********************************************/
+.reveal section img {
+  margin: 15px 0px;
+  background: rgba(255, 255, 255, 0.12);
+  border: 4px solid #93a1a1;
+  box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
+
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
+.reveal a img {
+  -webkit-transition: all .15s linear;
+  -moz-transition: all .15s linear;
+  transition: all .15s linear; }
+
+.reveal a:hover img {
+  background: rgba(255, 255, 255, 0.2);
+  border-color: #268bd2;
+  box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); }
+
+/*********************************************
+ * NAVIGATION CONTROLS
+ *********************************************/
+.reveal .controls {
+  color: #268bd2; }
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+.reveal .progress {
+  background: rgba(0, 0, 0, 0.2);
+  color: #268bd2; }
+
+.reveal .progress span {
+  -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+/*********************************************
+ * PRINT BACKGROUND
+ *********************************************/
+@media print {
+  .backgrounds {
+    background-color: #002b36; } }
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/night.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/night.css
new file mode 100644
index 0000000..f5ccb52
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/night.css
@@ -0,0 +1,271 @@
+/**
+ * Black theme for reveal.js.
+ *
+ * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ */
+@import url(https://fonts.googleapis.com/css?family=Montserrat:700);
+@import 
url(https://fonts.googleapis.com/css?family=Open+Sans:400,700,400italic,700italic);
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+body {
+  background: #111;
+  background-color: #111; }
+
+.reveal {
+  font-family: "Open Sans", sans-serif;
+  font-size: 40px;
+  font-weight: normal;
+  color: #eee; }
+
+::selection {
+  color: #fff;
+  background: #e7ad52;
+  text-shadow: none; }
+
+::-moz-selection {
+  color: #fff;
+  background: #e7ad52;
+  text-shadow: none; }
+
+.reveal .slides section,
+.reveal .slides section > section {
+  line-height: 1.3;
+  font-weight: inherit; }
+
+/*********************************************
+ * HEADERS
+ *********************************************/
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+  margin: 0 0 20px 0;
+  color: #eee;
+  font-family: "Montserrat", Impact, sans-serif;
+  font-weight: normal;
+  line-height: 1.2;
+  letter-spacing: -0.03em;
+  text-transform: none;
+  text-shadow: none;
+  word-wrap: break-word; }
+
+.reveal h1 {
+  font-size: 3.77em; }
+
+.reveal h2 {
+  font-size: 2.11em; }
+
+.reveal h3 {
+  font-size: 1.55em; }
+
+.reveal h4 {
+  font-size: 1em; }
+
+.reveal h1 {
+  text-shadow: none; }
+
+/*********************************************
+ * OTHER
+ *********************************************/
+.reveal p {
+  margin: 20px 0;
+  line-height: 1.3; }
+
+/* Ensure certain elements are never larger than the slide itself */
+.reveal img,
+.reveal video,
+.reveal iframe {
+  max-width: 95%;
+  max-height: 95%; }
+
+.reveal strong,
+.reveal b {
+  font-weight: bold; }
+
+.reveal em {
+  font-style: italic; }
+
+.reveal ol,
+.reveal dl,
+.reveal ul {
+  display: inline-block;
+  text-align: left;
+  margin: 0 0 0 1em; }
+
+.reveal ol {
+  list-style-type: decimal; }
+
+.reveal ul {
+  list-style-type: disc; }
+
+.reveal ul ul {
+  list-style-type: square; }
+
+.reveal ul ul ul {
+  list-style-type: circle; }
+
+.reveal ul ul,
+.reveal ul ol,
+.reveal ol ol,
+.reveal ol ul {
+  display: block;
+  margin-left: 40px; }
+
+.reveal dt {
+  font-weight: bold; }
+
+.reveal dd {
+  margin-left: 40px; }
+
+.reveal blockquote {
+  display: block;
+  position: relative;
+  width: 70%;
+  margin: 20px auto;
+  padding: 5px;
+  font-style: italic;
+  background: rgba(255, 255, 255, 0.05);
+  box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); }
+
+.reveal blockquote p:first-child,
+.reveal blockquote p:last-child {
+  display: inline-block; }
+
+.reveal q {
+  font-style: italic; }
+
+.reveal pre {
+  display: block;
+  position: relative;
+  width: 90%;
+  margin: 20px auto;
+  text-align: left;
+  font-size: 0.55em;
+  font-family: monospace;
+  line-height: 1.2em;
+  word-wrap: break-word;
+  box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.15); }
+
+.reveal code {
+  font-family: monospace;
+  text-transform: none; }
+
+.reveal pre code {
+  display: block;
+  padding: 5px;
+  overflow: auto;
+  max-height: 400px;
+  word-wrap: normal; }
+
+.reveal table {
+  margin: auto;
+  border-collapse: collapse;
+  border-spacing: 0; }
+
+.reveal table th {
+  font-weight: bold; }
+
+.reveal table th,
+.reveal table td {
+  text-align: left;
+  padding: 0.2em 0.5em 0.2em 0.5em;
+  border-bottom: 1px solid; }
+
+.reveal table th[align="center"],
+.reveal table td[align="center"] {
+  text-align: center; }
+
+.reveal table th[align="right"],
+.reveal table td[align="right"] {
+  text-align: right; }
+
+.reveal table tbody tr:last-child th,
+.reveal table tbody tr:last-child td {
+  border-bottom: none; }
+
+.reveal sup {
+  vertical-align: super;
+  font-size: smaller; }
+
+.reveal sub {
+  vertical-align: sub;
+  font-size: smaller; }
+
+.reveal small {
+  display: inline-block;
+  font-size: 0.6em;
+  line-height: 1.2em;
+  vertical-align: top; }
+
+.reveal small * {
+  vertical-align: top; }
+
+/*********************************************
+ * LINKS
+ *********************************************/
+.reveal a {
+  color: #e7ad52;
+  text-decoration: none;
+  -webkit-transition: color .15s ease;
+  -moz-transition: color .15s ease;
+  transition: color .15s ease; }
+
+.reveal a:hover {
+  color: #f3d7ac;
+  text-shadow: none;
+  border: none; }
+
+.reveal .roll span:after {
+  color: #fff;
+  background: #d08a1d; }
+
+/*********************************************
+ * IMAGES
+ *********************************************/
+.reveal section img {
+  margin: 15px 0px;
+  background: rgba(255, 255, 255, 0.12);
+  border: 4px solid #eee;
+  box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
+
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
+.reveal a img {
+  -webkit-transition: all .15s linear;
+  -moz-transition: all .15s linear;
+  transition: all .15s linear; }
+
+.reveal a:hover img {
+  background: rgba(255, 255, 255, 0.2);
+  border-color: #e7ad52;
+  box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); }
+
+/*********************************************
+ * NAVIGATION CONTROLS
+ *********************************************/
+.reveal .controls {
+  color: #e7ad52; }
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+.reveal .progress {
+  background: rgba(0, 0, 0, 0.2);
+  color: #e7ad52; }
+
+.reveal .progress span {
+  -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+/*********************************************
+ * PRINT BACKGROUND
+ *********************************************/
+@media print {
+  .backgrounds {
+    background-color: #111; } }
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/serif.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/serif.css
new file mode 100644
index 0000000..6514a6f
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/serif.css
@@ -0,0 +1,273 @@
+/**
+ * A simple theme for reveal.js presentations, similar
+ * to the default theme. The accent color is brown.
+ *
+ * This theme is Copyright (C) 2012-2013 Owen Versteeg, 
http://owenversteeg.com - it is MIT licensed.
+ */
+.reveal a {
+  line-height: 1.3em; }
+
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+body {
+  background: #F0F1EB;
+  background-color: #F0F1EB; }
+
+.reveal {
+  font-family: "Palatino Linotype", "Book Antiqua", Palatino, FreeSerif, serif;
+  font-size: 40px;
+  font-weight: normal;
+  color: #000; }
+
+::selection {
+  color: #fff;
+  background: #26351C;
+  text-shadow: none; }
+
+::-moz-selection {
+  color: #fff;
+  background: #26351C;
+  text-shadow: none; }
+
+.reveal .slides section,
+.reveal .slides section > section {
+  line-height: 1.3;
+  font-weight: inherit; }
+
+/*********************************************
+ * HEADERS
+ *********************************************/
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+  margin: 0 0 20px 0;
+  color: #383D3D;
+  font-family: "Palatino Linotype", "Book Antiqua", Palatino, FreeSerif, serif;
+  font-weight: normal;
+  line-height: 1.2;
+  letter-spacing: normal;
+  text-transform: none;
+  text-shadow: none;
+  word-wrap: break-word; }
+
+.reveal h1 {
+  font-size: 3.77em; }
+
+.reveal h2 {
+  font-size: 2.11em; }
+
+.reveal h3 {
+  font-size: 1.55em; }
+
+.reveal h4 {
+  font-size: 1em; }
+
+.reveal h1 {
+  text-shadow: none; }
+
+/*********************************************
+ * OTHER
+ *********************************************/
+.reveal p {
+  margin: 20px 0;
+  line-height: 1.3; }
+
+/* Ensure certain elements are never larger than the slide itself */
+.reveal img,
+.reveal video,
+.reveal iframe {
+  max-width: 95%;
+  max-height: 95%; }
+
+.reveal strong,
+.reveal b {
+  font-weight: bold; }
+
+.reveal em {
+  font-style: italic; }
+
+.reveal ol,
+.reveal dl,
+.reveal ul {
+  display: inline-block;
+  text-align: left;
+  margin: 0 0 0 1em; }
+
+.reveal ol {
+  list-style-type: decimal; }
+
+.reveal ul {
+  list-style-type: disc; }
+
+.reveal ul ul {
+  list-style-type: square; }
+
+.reveal ul ul ul {
+  list-style-type: circle; }
+
+.reveal ul ul,
+.reveal ul ol,
+.reveal ol ol,
+.reveal ol ul {
+  display: block;
+  margin-left: 40px; }
+
+.reveal dt {
+  font-weight: bold; }
+
+.reveal dd {
+  margin-left: 40px; }
+
+.reveal blockquote {
+  display: block;
+  position: relative;
+  width: 70%;
+  margin: 20px auto;
+  padding: 5px;
+  font-style: italic;
+  background: rgba(255, 255, 255, 0.05);
+  box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); }
+
+.reveal blockquote p:first-child,
+.reveal blockquote p:last-child {
+  display: inline-block; }
+
+.reveal q {
+  font-style: italic; }
+
+.reveal pre {
+  display: block;
+  position: relative;
+  width: 90%;
+  margin: 20px auto;
+  text-align: left;
+  font-size: 0.55em;
+  font-family: monospace;
+  line-height: 1.2em;
+  word-wrap: break-word;
+  box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.15); }
+
+.reveal code {
+  font-family: monospace;
+  text-transform: none; }
+
+.reveal pre code {
+  display: block;
+  padding: 5px;
+  overflow: auto;
+  max-height: 400px;
+  word-wrap: normal; }
+
+.reveal table {
+  margin: auto;
+  border-collapse: collapse;
+  border-spacing: 0; }
+
+.reveal table th {
+  font-weight: bold; }
+
+.reveal table th,
+.reveal table td {
+  text-align: left;
+  padding: 0.2em 0.5em 0.2em 0.5em;
+  border-bottom: 1px solid; }
+
+.reveal table th[align="center"],
+.reveal table td[align="center"] {
+  text-align: center; }
+
+.reveal table th[align="right"],
+.reveal table td[align="right"] {
+  text-align: right; }
+
+.reveal table tbody tr:last-child th,
+.reveal table tbody tr:last-child td {
+  border-bottom: none; }
+
+.reveal sup {
+  vertical-align: super;
+  font-size: smaller; }
+
+.reveal sub {
+  vertical-align: sub;
+  font-size: smaller; }
+
+.reveal small {
+  display: inline-block;
+  font-size: 0.6em;
+  line-height: 1.2em;
+  vertical-align: top; }
+
+.reveal small * {
+  vertical-align: top; }
+
+/*********************************************
+ * LINKS
+ *********************************************/
+.reveal a {
+  color: #51483D;
+  text-decoration: none;
+  -webkit-transition: color .15s ease;
+  -moz-transition: color .15s ease;
+  transition: color .15s ease; }
+
+.reveal a:hover {
+  color: #8b7c69;
+  text-shadow: none;
+  border: none; }
+
+.reveal .roll span:after {
+  color: #fff;
+  background: #25211c; }
+
+/*********************************************
+ * IMAGES
+ *********************************************/
+.reveal section img {
+  margin: 15px 0px;
+  background: rgba(255, 255, 255, 0.12);
+  border: 4px solid #000;
+  box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
+
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
+.reveal a img {
+  -webkit-transition: all .15s linear;
+  -moz-transition: all .15s linear;
+  transition: all .15s linear; }
+
+.reveal a:hover img {
+  background: rgba(255, 255, 255, 0.2);
+  border-color: #51483D;
+  box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); }
+
+/*********************************************
+ * NAVIGATION CONTROLS
+ *********************************************/
+.reveal .controls {
+  color: #51483D; }
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+.reveal .progress {
+  background: rgba(0, 0, 0, 0.2);
+  color: #51483D; }
+
+.reveal .progress span {
+  -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+/*********************************************
+ * PRINT BACKGROUND
+ *********************************************/
+@media print {
+  .backgrounds {
+    background-color: #F0F1EB; } }
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/simple.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/simple.css
new file mode 100644
index 0000000..a7a29a6
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/simple.css
@@ -0,0 +1,276 @@
+/**
+ * A simple theme for reveal.js presentations, similar
+ * to the default theme. The accent color is darkblue.
+ *
+ * This theme is Copyright (C) 2012 Owen Versteeg, 
https://github.com/StereotypicalApps. It is MIT licensed.
+ * reveal.js is Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ */
+@import url(https://fonts.googleapis.com/css?family=News+Cycle:400,700);
+@import 
url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
+section.has-dark-background, section.has-dark-background h1, 
section.has-dark-background h2, section.has-dark-background h3, 
section.has-dark-background h4, section.has-dark-background h5, 
section.has-dark-background h6 {
+  color: #fff; }
+
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+body {
+  background: #fff;
+  background-color: #fff; }
+
+.reveal {
+  font-family: "Lato", sans-serif;
+  font-size: 40px;
+  font-weight: normal;
+  color: #000; }
+
+::selection {
+  color: #fff;
+  background: rgba(0, 0, 0, 0.99);
+  text-shadow: none; }
+
+::-moz-selection {
+  color: #fff;
+  background: rgba(0, 0, 0, 0.99);
+  text-shadow: none; }
+
+.reveal .slides section,
+.reveal .slides section > section {
+  line-height: 1.3;
+  font-weight: inherit; }
+
+/*********************************************
+ * HEADERS
+ *********************************************/
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+  margin: 0 0 20px 0;
+  color: #000;
+  font-family: "News Cycle", Impact, sans-serif;
+  font-weight: normal;
+  line-height: 1.2;
+  letter-spacing: normal;
+  text-transform: none;
+  text-shadow: none;
+  word-wrap: break-word; }
+
+.reveal h1 {
+  font-size: 3.77em; }
+
+.reveal h2 {
+  font-size: 2.11em; }
+
+.reveal h3 {
+  font-size: 1.55em; }
+
+.reveal h4 {
+  font-size: 1em; }
+
+.reveal h1 {
+  text-shadow: none; }
+
+/*********************************************
+ * OTHER
+ *********************************************/
+.reveal p {
+  margin: 20px 0;
+  line-height: 1.3; }
+
+/* Ensure certain elements are never larger than the slide itself */
+.reveal img,
+.reveal video,
+.reveal iframe {
+  max-width: 95%;
+  max-height: 95%; }
+
+.reveal strong,
+.reveal b {
+  font-weight: bold; }
+
+.reveal em {
+  font-style: italic; }
+
+.reveal ol,
+.reveal dl,
+.reveal ul {
+  display: inline-block;
+  text-align: left;
+  margin: 0 0 0 1em; }
+
+.reveal ol {
+  list-style-type: decimal; }
+
+.reveal ul {
+  list-style-type: disc; }
+
+.reveal ul ul {
+  list-style-type: square; }
+
+.reveal ul ul ul {
+  list-style-type: circle; }
+
+.reveal ul ul,
+.reveal ul ol,
+.reveal ol ol,
+.reveal ol ul {
+  display: block;
+  margin-left: 40px; }
+
+.reveal dt {
+  font-weight: bold; }
+
+.reveal dd {
+  margin-left: 40px; }
+
+.reveal blockquote {
+  display: block;
+  position: relative;
+  width: 70%;
+  margin: 20px auto;
+  padding: 5px;
+  font-style: italic;
+  background: rgba(255, 255, 255, 0.05);
+  box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); }
+
+.reveal blockquote p:first-child,
+.reveal blockquote p:last-child {
+  display: inline-block; }
+
+.reveal q {
+  font-style: italic; }
+
+.reveal pre {
+  display: block;
+  position: relative;
+  width: 90%;
+  margin: 20px auto;
+  text-align: left;
+  font-size: 0.55em;
+  font-family: monospace;
+  line-height: 1.2em;
+  word-wrap: break-word;
+  box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.15); }
+
+.reveal code {
+  font-family: monospace;
+  text-transform: none; }
+
+.reveal pre code {
+  display: block;
+  padding: 5px;
+  overflow: auto;
+  max-height: 400px;
+  word-wrap: normal; }
+
+.reveal table {
+  margin: auto;
+  border-collapse: collapse;
+  border-spacing: 0; }
+
+.reveal table th {
+  font-weight: bold; }
+
+.reveal table th,
+.reveal table td {
+  text-align: left;
+  padding: 0.2em 0.5em 0.2em 0.5em;
+  border-bottom: 1px solid; }
+
+.reveal table th[align="center"],
+.reveal table td[align="center"] {
+  text-align: center; }
+
+.reveal table th[align="right"],
+.reveal table td[align="right"] {
+  text-align: right; }
+
+.reveal table tbody tr:last-child th,
+.reveal table tbody tr:last-child td {
+  border-bottom: none; }
+
+.reveal sup {
+  vertical-align: super;
+  font-size: smaller; }
+
+.reveal sub {
+  vertical-align: sub;
+  font-size: smaller; }
+
+.reveal small {
+  display: inline-block;
+  font-size: 0.6em;
+  line-height: 1.2em;
+  vertical-align: top; }
+
+.reveal small * {
+  vertical-align: top; }
+
+/*********************************************
+ * LINKS
+ *********************************************/
+.reveal a {
+  color: #00008B;
+  text-decoration: none;
+  -webkit-transition: color .15s ease;
+  -moz-transition: color .15s ease;
+  transition: color .15s ease; }
+
+.reveal a:hover {
+  color: #0000f1;
+  text-shadow: none;
+  border: none; }
+
+.reveal .roll span:after {
+  color: #fff;
+  background: #00003f; }
+
+/*********************************************
+ * IMAGES
+ *********************************************/
+.reveal section img {
+  margin: 15px 0px;
+  background: rgba(255, 255, 255, 0.12);
+  border: 4px solid #000;
+  box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
+
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
+.reveal a img {
+  -webkit-transition: all .15s linear;
+  -moz-transition: all .15s linear;
+  transition: all .15s linear; }
+
+.reveal a:hover img {
+  background: rgba(255, 255, 255, 0.2);
+  border-color: #00008B;
+  box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); }
+
+/*********************************************
+ * NAVIGATION CONTROLS
+ *********************************************/
+.reveal .controls {
+  color: #00008B; }
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+.reveal .progress {
+  background: rgba(0, 0, 0, 0.2);
+  color: #00008B; }
+
+.reveal .progress span {
+  -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+/*********************************************
+ * PRINT BACKGROUND
+ *********************************************/
+@media print {
+  .backgrounds {
+    background-color: #fff; } }
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/sky.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/sky.css
new file mode 100644
index 0000000..d8734c9
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/sky.css
@@ -0,0 +1,280 @@
+/**
+ * Sky theme for reveal.js.
+ *
+ * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ */
+@import 
url(https://fonts.googleapis.com/css?family=Quicksand:400,700,400italic,700italic);
+@import 
url(https://fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700);
+.reveal a {
+  line-height: 1.3em; }
+
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+body {
+  background: #add9e4;
+  background: -moz-radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 
100%);
+  background: -webkit-gradient(radial, center center, 0px, center center, 
100%, color-stop(0%, #f7fbfc), color-stop(100%, #add9e4));
+  background: -webkit-radial-gradient(center, circle cover, #f7fbfc 0%, 
#add9e4 100%);
+  background: -o-radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 
100%);
+  background: -ms-radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 
100%);
+  background: radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%);
+  background-color: #f7fbfc; }
+
+.reveal {
+  font-family: "Open Sans", sans-serif;
+  font-size: 40px;
+  font-weight: normal;
+  color: #333; }
+
+::selection {
+  color: #fff;
+  background: #134674;
+  text-shadow: none; }
+
+::-moz-selection {
+  color: #fff;
+  background: #134674;
+  text-shadow: none; }
+
+.reveal .slides section,
+.reveal .slides section > section {
+  line-height: 1.3;
+  font-weight: inherit; }
+
+/*********************************************
+ * HEADERS
+ *********************************************/
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+  margin: 0 0 20px 0;
+  color: #333;
+  font-family: "Quicksand", sans-serif;
+  font-weight: normal;
+  line-height: 1.2;
+  letter-spacing: -0.08em;
+  text-transform: uppercase;
+  text-shadow: none;
+  word-wrap: break-word; }
+
+.reveal h1 {
+  font-size: 3.77em; }
+
+.reveal h2 {
+  font-size: 2.11em; }
+
+.reveal h3 {
+  font-size: 1.55em; }
+
+.reveal h4 {
+  font-size: 1em; }
+
+.reveal h1 {
+  text-shadow: none; }
+
+/*********************************************
+ * OTHER
+ *********************************************/
+.reveal p {
+  margin: 20px 0;
+  line-height: 1.3; }
+
+/* Ensure certain elements are never larger than the slide itself */
+.reveal img,
+.reveal video,
+.reveal iframe {
+  max-width: 95%;
+  max-height: 95%; }
+
+.reveal strong,
+.reveal b {
+  font-weight: bold; }
+
+.reveal em {
+  font-style: italic; }
+
+.reveal ol,
+.reveal dl,
+.reveal ul {
+  display: inline-block;
+  text-align: left;
+  margin: 0 0 0 1em; }
+
+.reveal ol {
+  list-style-type: decimal; }
+
+.reveal ul {
+  list-style-type: disc; }
+
+.reveal ul ul {
+  list-style-type: square; }
+
+.reveal ul ul ul {
+  list-style-type: circle; }
+
+.reveal ul ul,
+.reveal ul ol,
+.reveal ol ol,
+.reveal ol ul {
+  display: block;
+  margin-left: 40px; }
+
+.reveal dt {
+  font-weight: bold; }
+
+.reveal dd {
+  margin-left: 40px; }
+
+.reveal blockquote {
+  display: block;
+  position: relative;
+  width: 70%;
+  margin: 20px auto;
+  padding: 5px;
+  font-style: italic;
+  background: rgba(255, 255, 255, 0.05);
+  box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); }
+
+.reveal blockquote p:first-child,
+.reveal blockquote p:last-child {
+  display: inline-block; }
+
+.reveal q {
+  font-style: italic; }
+
+.reveal pre {
+  display: block;
+  position: relative;
+  width: 90%;
+  margin: 20px auto;
+  text-align: left;
+  font-size: 0.55em;
+  font-family: monospace;
+  line-height: 1.2em;
+  word-wrap: break-word;
+  box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.15); }
+
+.reveal code {
+  font-family: monospace;
+  text-transform: none; }
+
+.reveal pre code {
+  display: block;
+  padding: 5px;
+  overflow: auto;
+  max-height: 400px;
+  word-wrap: normal; }
+
+.reveal table {
+  margin: auto;
+  border-collapse: collapse;
+  border-spacing: 0; }
+
+.reveal table th {
+  font-weight: bold; }
+
+.reveal table th,
+.reveal table td {
+  text-align: left;
+  padding: 0.2em 0.5em 0.2em 0.5em;
+  border-bottom: 1px solid; }
+
+.reveal table th[align="center"],
+.reveal table td[align="center"] {
+  text-align: center; }
+
+.reveal table th[align="right"],
+.reveal table td[align="right"] {
+  text-align: right; }
+
+.reveal table tbody tr:last-child th,
+.reveal table tbody tr:last-child td {
+  border-bottom: none; }
+
+.reveal sup {
+  vertical-align: super;
+  font-size: smaller; }
+
+.reveal sub {
+  vertical-align: sub;
+  font-size: smaller; }
+
+.reveal small {
+  display: inline-block;
+  font-size: 0.6em;
+  line-height: 1.2em;
+  vertical-align: top; }
+
+.reveal small * {
+  vertical-align: top; }
+
+/*********************************************
+ * LINKS
+ *********************************************/
+.reveal a {
+  color: #3b759e;
+  text-decoration: none;
+  -webkit-transition: color .15s ease;
+  -moz-transition: color .15s ease;
+  transition: color .15s ease; }
+
+.reveal a:hover {
+  color: #74a7cb;
+  text-shadow: none;
+  border: none; }
+
+.reveal .roll span:after {
+  color: #fff;
+  background: #264c66; }
+
+/*********************************************
+ * IMAGES
+ *********************************************/
+.reveal section img {
+  margin: 15px 0px;
+  background: rgba(255, 255, 255, 0.12);
+  border: 4px solid #333;
+  box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
+
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
+.reveal a img {
+  -webkit-transition: all .15s linear;
+  -moz-transition: all .15s linear;
+  transition: all .15s linear; }
+
+.reveal a:hover img {
+  background: rgba(255, 255, 255, 0.2);
+  border-color: #3b759e;
+  box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); }
+
+/*********************************************
+ * NAVIGATION CONTROLS
+ *********************************************/
+.reveal .controls {
+  color: #3b759e; }
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+.reveal .progress {
+  background: rgba(0, 0, 0, 0.2);
+  color: #3b759e; }
+
+.reveal .progress span {
+  -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+/*********************************************
+ * PRINT BACKGROUND
+ *********************************************/
+@media print {
+  .backgrounds {
+    background-color: #f7fbfc; } }
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/solarized.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/solarized.css
new file mode 100644
index 0000000..f1a2b9e
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/solarized.css
@@ -0,0 +1,277 @@
+/**
+ * Solarized Light theme for reveal.js.
+ * Author: Achim Staebler
+ */
+@import url(../../lib/font/league-gothic/league-gothic.css);
+@import 
url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
+/**
+ * Solarized colors by Ethan Schoonover
+ */
+html * {
+  color-profile: sRGB;
+  rendering-intent: auto; }
+
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+body {
+  background: #fdf6e3;
+  background-color: #fdf6e3; }
+
+.reveal {
+  font-family: "Lato", sans-serif;
+  font-size: 40px;
+  font-weight: normal;
+  color: #657b83; }
+
+::selection {
+  color: #fff;
+  background: #d33682;
+  text-shadow: none; }
+
+::-moz-selection {
+  color: #fff;
+  background: #d33682;
+  text-shadow: none; }
+
+.reveal .slides section,
+.reveal .slides section > section {
+  line-height: 1.3;
+  font-weight: inherit; }
+
+/*********************************************
+ * HEADERS
+ *********************************************/
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+  margin: 0 0 20px 0;
+  color: #586e75;
+  font-family: "League Gothic", Impact, sans-serif;
+  font-weight: normal;
+  line-height: 1.2;
+  letter-spacing: normal;
+  text-transform: uppercase;
+  text-shadow: none;
+  word-wrap: break-word; }
+
+.reveal h1 {
+  font-size: 3.77em; }
+
+.reveal h2 {
+  font-size: 2.11em; }
+
+.reveal h3 {
+  font-size: 1.55em; }
+
+.reveal h4 {
+  font-size: 1em; }
+
+.reveal h1 {
+  text-shadow: none; }
+
+/*********************************************
+ * OTHER
+ *********************************************/
+.reveal p {
+  margin: 20px 0;
+  line-height: 1.3; }
+
+/* Ensure certain elements are never larger than the slide itself */
+.reveal img,
+.reveal video,
+.reveal iframe {
+  max-width: 95%;
+  max-height: 95%; }
+
+.reveal strong,
+.reveal b {
+  font-weight: bold; }
+
+.reveal em {
+  font-style: italic; }
+
+.reveal ol,
+.reveal dl,
+.reveal ul {
+  display: inline-block;
+  text-align: left;
+  margin: 0 0 0 1em; }
+
+.reveal ol {
+  list-style-type: decimal; }
+
+.reveal ul {
+  list-style-type: disc; }
+
+.reveal ul ul {
+  list-style-type: square; }
+
+.reveal ul ul ul {
+  list-style-type: circle; }
+
+.reveal ul ul,
+.reveal ul ol,
+.reveal ol ol,
+.reveal ol ul {
+  display: block;
+  margin-left: 40px; }
+
+.reveal dt {
+  font-weight: bold; }
+
+.reveal dd {
+  margin-left: 40px; }
+
+.reveal blockquote {
+  display: block;
+  position: relative;
+  width: 70%;
+  margin: 20px auto;
+  padding: 5px;
+  font-style: italic;
+  background: rgba(255, 255, 255, 0.05);
+  box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); }
+
+.reveal blockquote p:first-child,
+.reveal blockquote p:last-child {
+  display: inline-block; }
+
+.reveal q {
+  font-style: italic; }
+
+.reveal pre {
+  display: block;
+  position: relative;
+  width: 90%;
+  margin: 20px auto;
+  text-align: left;
+  font-size: 0.55em;
+  font-family: monospace;
+  line-height: 1.2em;
+  word-wrap: break-word;
+  box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.15); }
+
+.reveal code {
+  font-family: monospace;
+  text-transform: none; }
+
+.reveal pre code {
+  display: block;
+  padding: 5px;
+  overflow: auto;
+  max-height: 400px;
+  word-wrap: normal; }
+
+.reveal table {
+  margin: auto;
+  border-collapse: collapse;
+  border-spacing: 0; }
+
+.reveal table th {
+  font-weight: bold; }
+
+.reveal table th,
+.reveal table td {
+  text-align: left;
+  padding: 0.2em 0.5em 0.2em 0.5em;
+  border-bottom: 1px solid; }
+
+.reveal table th[align="center"],
+.reveal table td[align="center"] {
+  text-align: center; }
+
+.reveal table th[align="right"],
+.reveal table td[align="right"] {
+  text-align: right; }
+
+.reveal table tbody tr:last-child th,
+.reveal table tbody tr:last-child td {
+  border-bottom: none; }
+
+.reveal sup {
+  vertical-align: super;
+  font-size: smaller; }
+
+.reveal sub {
+  vertical-align: sub;
+  font-size: smaller; }
+
+.reveal small {
+  display: inline-block;
+  font-size: 0.6em;
+  line-height: 1.2em;
+  vertical-align: top; }
+
+.reveal small * {
+  vertical-align: top; }
+
+/*********************************************
+ * LINKS
+ *********************************************/
+.reveal a {
+  color: #268bd2;
+  text-decoration: none;
+  -webkit-transition: color .15s ease;
+  -moz-transition: color .15s ease;
+  transition: color .15s ease; }
+
+.reveal a:hover {
+  color: #78b9e6;
+  text-shadow: none;
+  border: none; }
+
+.reveal .roll span:after {
+  color: #fff;
+  background: #1a6091; }
+
+/*********************************************
+ * IMAGES
+ *********************************************/
+.reveal section img {
+  margin: 15px 0px;
+  background: rgba(255, 255, 255, 0.12);
+  border: 4px solid #657b83;
+  box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
+
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
+.reveal a img {
+  -webkit-transition: all .15s linear;
+  -moz-transition: all .15s linear;
+  transition: all .15s linear; }
+
+.reveal a:hover img {
+  background: rgba(255, 255, 255, 0.2);
+  border-color: #268bd2;
+  box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); }
+
+/*********************************************
+ * NAVIGATION CONTROLS
+ *********************************************/
+.reveal .controls {
+  color: #268bd2; }
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+.reveal .progress {
+  background: rgba(0, 0, 0, 0.2);
+  color: #268bd2; }
+
+.reveal .progress span {
+  -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+/*********************************************
+ * PRINT BACKGROUND
+ *********************************************/
+@media print {
+  .backgrounds {
+    background-color: #fdf6e3; } }
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/beige.scss
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/beige.scss
new file mode 100644
index 0000000..5564f53
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/beige.scss
@@ -0,0 +1,39 @@
+/**
+ * Beige theme for reveal.js.
+ *
+ * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+
+// Include theme-specific fonts
+@import url(../../lib/font/league-gothic/league-gothic.css);
+@import 
url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
+
+
+// Override theme settings (see ../template/settings.scss)
+$mainColor: #333;
+$headingColor: #333;
+$headingTextShadow: none;
+$backgroundColor: #f7f3de;
+$linkColor: #8b743d;
+$linkColorHover: lighten( $linkColor, 20% );
+$selectionBackgroundColor: rgba(79, 64, 28, 0.99);
+$heading1TextShadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 
#b9b9b9, 0 5px 0 #aaa, 0 6px 1px rgba(0,0,0,.1), 0 0 5px rgba(0,0,0,.1), 0 1px 
3px rgba(0,0,0,.3), 0 3px 5px rgba(0,0,0,.2), 0 5px 10px rgba(0,0,0,.25), 0 
20px 20px rgba(0,0,0,.15);
+
+// Background generator
+@mixin bodyBackground() {
+       @include radial-gradient( rgba(247,242,211,1), rgba(255,255,255,1) );
+}
+
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/black.scss
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/black.scss
new file mode 100644
index 0000000..4720c8a
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/black.scss
@@ -0,0 +1,49 @@
+/**
+ * Black theme for reveal.js. This is the opposite of the 'white' theme.
+ *
+ * By Hakim El Hattab, http://hakim.se
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+// Include theme-specific fonts
+@import url(../../lib/font/source-sans-pro/source-sans-pro.css);
+
+
+// Override theme settings (see ../template/settings.scss)
+$backgroundColor: #191919;
+
+$mainColor: #fff;
+$headingColor: #fff;
+
+$mainFontSize: 42px;
+$mainFont: 'Source Sans Pro', Helvetica, sans-serif;
+$headingFont: 'Source Sans Pro', Helvetica, sans-serif;
+$headingTextShadow: none;
+$headingLetterSpacing: normal;
+$headingTextTransform: uppercase;
+$headingFontWeight: 600;
+$linkColor: #42affa;
+$linkColorHover: lighten( $linkColor, 15% );
+$selectionBackgroundColor: lighten( $linkColor, 25% );
+
+$heading1Size: 2.5em;
+$heading2Size: 1.6em;
+$heading3Size: 1.3em;
+$heading4Size: 1.0em;
+
+section.has-light-background {
+       &, h1, h2, h3, h4, h5, h6 {
+               color: #222;
+       }
+}
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/blood.scss
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/blood.scss
new file mode 100644
index 0000000..4533fc0
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/blood.scss
@@ -0,0 +1,78 @@
+/**
+ * Blood theme for reveal.js
+ * Author: Walther http://github.com/Walther
+ *
+ * Designed to be used with highlight.js theme
+ * "monokai_sublime.css" available from
+ * https://github.com/isagalaev/highlight.js/
+ *
+ * For other themes, change $codeBackground accordingly.
+ *
+ */
+
+ // Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+// Include theme-specific fonts
+
+@import 
url(https://fonts.googleapis.com/css?family=Ubuntu:300,700,300italic,700italic);
+
+// Colors used in the theme
+$blood: #a23;
+$coal: #222;
+$codeBackground: #23241f;
+
+$backgroundColor: $coal;
+
+// Main text
+$mainFont: Ubuntu, 'sans-serif';
+$mainColor: #eee;
+
+// Headings
+$headingFont: Ubuntu, 'sans-serif';
+$headingTextShadow: 2px 2px 2px $coal;
+
+// h1 shadow, borrowed humbly from 
+// (c) Default theme by Hakim El Hattab
+$heading1TextShadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 
#b9b9b9, 0 5px 0 #aaa, 0 6px 1px rgba(0,0,0,.1), 0 0 5px rgba(0,0,0,.1), 0 1px 
3px rgba(0,0,0,.3), 0 3px 5px rgba(0,0,0,.2), 0 5px 10px rgba(0,0,0,.25), 0 
20px 20px rgba(0,0,0,.15);
+
+// Links
+$linkColor: $blood;
+$linkColorHover: lighten( $linkColor, 20% );
+
+// Text selection
+$selectionBackgroundColor: $blood;
+$selectionColor: #fff;
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
+
+// some overrides after theme template import
+
+.reveal p {
+    font-weight: 300;
+    text-shadow: 1px 1px $coal;
+}
+
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+    font-weight: 700;
+}
+
+.reveal p code {
+    background-color: $codeBackground;
+    display: inline-block;
+    border-radius: 7px;
+}
+
+.reveal small code {
+    vertical-align: baseline;
+}
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/league.scss
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/league.scss
new file mode 100644
index 0000000..46ea04a
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/league.scss
@@ -0,0 +1,34 @@
+/**
+ * League theme for reveal.js.
+ *
+ * This was the default theme pre-3.0.0.
+ *
+ * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+
+// Include theme-specific fonts
+@import url(../../lib/font/league-gothic/league-gothic.css);
+@import 
url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
+
+// Override theme settings (see ../template/settings.scss)
+$headingTextShadow: 0px 0px 6px rgba(0,0,0,0.2);
+$heading1TextShadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 
#b9b9b9, 0 5px 0 #aaa, 0 6px 1px rgba(0,0,0,.1), 0 0 5px rgba(0,0,0,.1), 0 1px 
3px rgba(0,0,0,.3), 0 3px 5px rgba(0,0,0,.2), 0 5px 10px rgba(0,0,0,.25), 0 
20px 20px rgba(0,0,0,.15);
+
+// Background generator
+@mixin bodyBackground() {
+       @include radial-gradient( rgba(28,30,32,1), rgba(85,90,95,1) );
+}
+
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/moon.scss
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/moon.scss
new file mode 100644
index 0000000..e47e5b5
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/moon.scss
@@ -0,0 +1,57 @@
+/**
+ * Solarized Dark theme for reveal.js.
+ * Author: Achim Staebler
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+
+// Include theme-specific fonts
+@import url(../../lib/font/league-gothic/league-gothic.css);
+@import 
url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
+
+/**
+ * Solarized colors by Ethan Schoonover
+ */
+html * {
+       color-profile: sRGB;
+       rendering-intent: auto;
+}
+
+// Solarized colors
+$base03:    #002b36;
+$base02:    #073642;
+$base01:    #586e75;
+$base00:    #657b83;
+$base0:     #839496;
+$base1:     #93a1a1;
+$base2:     #eee8d5;
+$base3:     #fdf6e3;
+$yellow:    #b58900;
+$orange:    #cb4b16;
+$red:       #dc322f;
+$magenta:   #d33682;
+$violet:    #6c71c4;
+$blue:      #268bd2;
+$cyan:      #2aa198;
+$green:     #859900;
+
+// Override theme settings (see ../template/settings.scss)
+$mainColor: $base1;
+$headingColor: $base2;
+$headingTextShadow: none;
+$backgroundColor: $base03;
+$linkColor: $blue;
+$linkColorHover: lighten( $linkColor, 20% );
+$selectionBackgroundColor: $magenta;
+
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/night.scss
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/night.scss
new file mode 100644
index 0000000..d49a282
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/night.scss
@@ -0,0 +1,34 @@
+/**
+ * Black theme for reveal.js.
+ *
+ * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+// Include theme-specific fonts
+@import url(https://fonts.googleapis.com/css?family=Montserrat:700);
+@import 
url(https://fonts.googleapis.com/css?family=Open+Sans:400,700,400italic,700italic);
+
+
+// Override theme settings (see ../template/settings.scss)
+$backgroundColor: #111;
+
+$mainFont: 'Open Sans', sans-serif;
+$linkColor: #e7ad52;
+$linkColorHover: lighten( $linkColor, 20% );
+$headingFont: 'Montserrat', Impact, sans-serif;
+$headingTextShadow: none;
+$headingLetterSpacing: -0.03em;
+$headingTextTransform: none;
+$selectionBackgroundColor: #e7ad52;
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/serif.scss
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/serif.scss
new file mode 100644
index 0000000..ec3fcb3
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/serif.scss
@@ -0,0 +1,35 @@
+/**
+ * A simple theme for reveal.js presentations, similar
+ * to the default theme. The accent color is brown.
+ *
+ * This theme is Copyright (C) 2012-2013 Owen Versteeg, 
http://owenversteeg.com - it is MIT licensed.
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+
+// Override theme settings (see ../template/settings.scss)
+$mainFont: 'Palatino Linotype', 'Book Antiqua', Palatino, FreeSerif, serif;
+$mainColor: #000;
+$headingFont: 'Palatino Linotype', 'Book Antiqua', Palatino, FreeSerif, serif;
+$headingColor: #383D3D;
+$headingTextShadow: none;
+$headingTextTransform: none;
+$backgroundColor: #F0F1EB;
+$linkColor: #51483D;
+$linkColorHover: lighten( $linkColor, 20% );
+$selectionBackgroundColor: #26351C;
+
+.reveal a {
+  line-height: 1.3em;
+}
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/simple.scss
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/simple.scss
new file mode 100644
index 0000000..394c9cd
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/simple.scss
@@ -0,0 +1,43 @@
+/**
+ * A simple theme for reveal.js presentations, similar
+ * to the default theme. The accent color is darkblue.
+ *
+ * This theme is Copyright (C) 2012 Owen Versteeg, 
https://github.com/StereotypicalApps. It is MIT licensed.
+ * reveal.js is Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+
+// Include theme-specific fonts
+@import url(https://fonts.googleapis.com/css?family=News+Cycle:400,700);
+@import 
url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
+
+
+// Override theme settings (see ../template/settings.scss)
+$mainFont: 'Lato', sans-serif;
+$mainColor: #000;
+$headingFont: 'News Cycle', Impact, sans-serif;
+$headingColor: #000;
+$headingTextShadow: none;
+$headingTextTransform: none;
+$backgroundColor: #fff;
+$linkColor: #00008B;
+$linkColorHover: lighten( $linkColor, 20% );
+$selectionBackgroundColor: rgba(0, 0, 0, 0.99);
+
+section.has-dark-background {
+       &, h1, h2, h3, h4, h5, h6 {
+               color: #fff;
+       }
+}
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/sky.scss
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/sky.scss
new file mode 100644
index 0000000..3fee67c
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/sky.scss
@@ -0,0 +1,46 @@
+/**
+ * Sky theme for reveal.js.
+ *
+ * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+
+// Include theme-specific fonts
+@import 
url(https://fonts.googleapis.com/css?family=Quicksand:400,700,400italic,700italic);
+@import 
url(https://fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700);
+
+
+// Override theme settings (see ../template/settings.scss)
+$mainFont: 'Open Sans', sans-serif;
+$mainColor: #333;
+$headingFont: 'Quicksand', sans-serif;
+$headingColor: #333;
+$headingLetterSpacing: -0.08em;
+$headingTextShadow: none;
+$backgroundColor: #f7fbfc;
+$linkColor: #3b759e;
+$linkColorHover: lighten( $linkColor, 20% );
+$selectionBackgroundColor: #134674;
+
+// Fix links so they are not cut off
+.reveal a {
+       line-height: 1.3em;
+}
+
+// Background generator
+@mixin bodyBackground() {
+       @include radial-gradient( #add9e4, #f7fbfc );
+}
+
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/solarized.scss
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/solarized.scss
new file mode 100644
index 0000000..912be56
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/solarized.scss
@@ -0,0 +1,63 @@
+/**
+ * Solarized Light theme for reveal.js.
+ * Author: Achim Staebler
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+
+// Include theme-specific fonts
+@import url(../../lib/font/league-gothic/league-gothic.css);
+@import 
url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
+
+
+/**
+ * Solarized colors by Ethan Schoonover
+ */
+html * {
+       color-profile: sRGB;
+       rendering-intent: auto;
+}
+
+// Solarized colors
+$base03:    #002b36;
+$base02:    #073642;
+$base01:    #586e75;
+$base00:    #657b83;
+$base0:     #839496;
+$base1:     #93a1a1;
+$base2:     #eee8d5;
+$base3:     #fdf6e3;
+$yellow:    #b58900;
+$orange:    #cb4b16;
+$red:       #dc322f;
+$magenta:   #d33682;
+$violet:    #6c71c4;
+$blue:      #268bd2;
+$cyan:      #2aa198;
+$green:     #859900;
+
+// Override theme settings (see ../template/settings.scss)
+$mainColor: $base00;
+$headingColor: $base01;
+$headingTextShadow: none;
+$backgroundColor: $base3;
+$linkColor: $blue;
+$linkColorHover: lighten( $linkColor, 20% );
+$selectionBackgroundColor: $magenta;
+
+// Background generator
+// @mixin bodyBackground() {
+//     @include radial-gradient( rgba($base3,1), rgba(lighten($base3, 20%),1) 
);
+// }
+
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/white.scss
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/white.scss
new file mode 100644
index 0000000..7f06ffd
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/source/white.scss
@@ -0,0 +1,49 @@
+/**
+ * White theme for reveal.js. This is the opposite of the 'black' theme.
+ *
+ * By Hakim El Hattab, http://hakim.se
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+// Include theme-specific fonts
+@import url(../../lib/font/source-sans-pro/source-sans-pro.css);
+
+
+// Override theme settings (see ../template/settings.scss)
+$backgroundColor: #fff;
+
+$mainColor: #222;
+$headingColor: #222;
+
+$mainFontSize: 42px;
+$mainFont: 'Source Sans Pro', Helvetica, sans-serif;
+$headingFont: 'Source Sans Pro', Helvetica, sans-serif;
+$headingTextShadow: none;
+$headingLetterSpacing: normal;
+$headingTextTransform: uppercase;
+$headingFontWeight: 600;
+$linkColor: #2a76dd;
+$linkColorHover: lighten( $linkColor, 15% );
+$selectionBackgroundColor: lighten( $linkColor, 25% );
+
+$heading1Size: 2.5em;
+$heading2Size: 1.6em;
+$heading3Size: 1.3em;
+$heading4Size: 1.0em;
+
+section.has-dark-background {
+       &, h1, h2, h3, h4, h5, h6 {
+               color: #fff;
+       }
+}
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/template/mixins.scss
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/template/mixins.scss
new file mode 100644
index 0000000..e0c5606
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/template/mixins.scss
@@ -0,0 +1,29 @@
+@mixin vertical-gradient( $top, $bottom ) {
+       background: $top;
+       background: -moz-linear-gradient( top, $top 0%, $bottom 100% );
+       background: -webkit-gradient( linear, left top, left bottom, 
color-stop(0%,$top), color-stop(100%,$bottom) );
+       background: -webkit-linear-gradient( top, $top 0%, $bottom 100% );
+       background: -o-linear-gradient( top, $top 0%, $bottom 100% );
+       background: -ms-linear-gradient( top, $top 0%, $bottom 100% );
+       background: linear-gradient( top, $top 0%, $bottom 100% );
+}
+
+@mixin horizontal-gradient( $top, $bottom ) {
+       background: $top;
+       background: -moz-linear-gradient( left, $top 0%, $bottom 100% );
+       background: -webkit-gradient( linear, left top, right top, 
color-stop(0%,$top), color-stop(100%,$bottom) );
+       background: -webkit-linear-gradient( left, $top 0%, $bottom 100% );
+       background: -o-linear-gradient( left, $top 0%, $bottom 100% );
+       background: -ms-linear-gradient( left, $top 0%, $bottom 100% );
+       background: linear-gradient( left, $top 0%, $bottom 100% );
+}
+
+@mixin radial-gradient( $outer, $inner, $type: circle ) {
+       background: $outer;
+       background: -moz-radial-gradient( center, $type cover,  $inner 0%, 
$outer 100% );
+       background: -webkit-gradient( radial, center center, 0px, center 
center, 100%, color-stop(0%,$inner), color-stop(100%,$outer) );
+       background: -webkit-radial-gradient( center, $type cover,  $inner 0%, 
$outer 100% );
+       background: -o-radial-gradient( center, $type cover,  $inner 0%, $outer 
100% );
+       background: -ms-radial-gradient( center, $type cover,  $inner 0%, 
$outer 100% );
+       background: radial-gradient( center, $type cover,  $inner 0%, $outer 
100% );
+}
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/template/settings.scss
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/template/settings.scss
new file mode 100644
index 0000000..5a917f8
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/template/settings.scss
@@ -0,0 +1,45 @@
+// Base settings for all themes that can optionally be
+// overridden by the super-theme
+
+// Background of the presentation
+$backgroundColor: #2b2b2b;
+
+// Primary/body text
+$mainFont: 'Lato', sans-serif;
+$mainFontSize: 40px;
+$mainColor: #eee;
+
+// Vertical spacing between blocks of text
+$blockMargin: 20px;
+
+// Headings
+$headingMargin: 0 0 $blockMargin 0;
+$headingFont: 'League Gothic', Impact, sans-serif;
+$headingColor: #eee;
+$headingLineHeight: 1.2;
+$headingLetterSpacing: normal;
+$headingTextTransform: uppercase;
+$headingTextShadow: none;
+$headingFontWeight: normal;
+$heading1TextShadow: $headingTextShadow;
+
+$heading1Size: 3.77em;
+$heading2Size: 2.11em;
+$heading3Size: 1.55em;
+$heading4Size: 1.00em;
+
+$codeFont: monospace;
+
+// Links and actions
+$linkColor: #13DAEC;
+$linkColorHover: lighten( $linkColor, 20% );
+
+// Text selection
+$selectionBackgroundColor: #FF5E99;
+$selectionColor: #fff;
+
+// Generates the presentation background, can be overridden
+// to return a background image or gradient
+@mixin bodyBackground() {
+       background: $backgroundColor;
+}
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/template/theme.scss
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/template/theme.scss
new file mode 100644
index 0000000..9ccfaf5
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/template/theme.scss
@@ -0,0 +1,325 @@
+// Base theme template for reveal.js
+
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+
+body {
+       @include bodyBackground();
+       background-color: $backgroundColor;
+}
+
+.reveal {
+       font-family: $mainFont;
+       font-size: $mainFontSize;
+       font-weight: normal;
+       color: $mainColor;
+}
+
+::selection {
+       color: $selectionColor;
+       background: $selectionBackgroundColor;
+       text-shadow: none;
+}
+
+::-moz-selection {
+       color: $selectionColor;
+       background: $selectionBackgroundColor;
+       text-shadow: none;
+}
+
+.reveal .slides section,
+.reveal .slides section>section {
+       line-height: 1.3;
+       font-weight: inherit;
+}
+
+/*********************************************
+ * HEADERS
+ *********************************************/
+
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+       margin: $headingMargin;
+       color: $headingColor;
+
+       font-family: $headingFont;
+       font-weight: $headingFontWeight;
+       line-height: $headingLineHeight;
+       letter-spacing: $headingLetterSpacing;
+
+       text-transform: $headingTextTransform;
+       text-shadow: $headingTextShadow;
+
+       word-wrap: break-word;
+}
+
+.reveal h1 {font-size: $heading1Size; }
+.reveal h2 {font-size: $heading2Size; }
+.reveal h3 {font-size: $heading3Size; }
+.reveal h4 {font-size: $heading4Size; }
+
+.reveal h1 {
+       text-shadow: $heading1TextShadow;
+}
+
+
+/*********************************************
+ * OTHER
+ *********************************************/
+
+.reveal p {
+       margin: $blockMargin 0;
+       line-height: 1.3;
+}
+
+/* Ensure certain elements are never larger than the slide itself */
+.reveal img,
+.reveal video,
+.reveal iframe {
+       max-width: 95%;
+       max-height: 95%;
+}
+.reveal strong,
+.reveal b {
+       font-weight: bold;
+}
+
+.reveal em {
+       font-style: italic;
+}
+
+.reveal ol,
+.reveal dl,
+.reveal ul {
+       display: inline-block;
+
+       text-align: left;
+       margin: 0 0 0 1em;
+}
+
+.reveal ol {
+       list-style-type: decimal;
+}
+
+.reveal ul {
+       list-style-type: disc;
+}
+
+.reveal ul ul {
+       list-style-type: square;
+}
+
+.reveal ul ul ul {
+       list-style-type: circle;
+}
+
+.reveal ul ul,
+.reveal ul ol,
+.reveal ol ol,
+.reveal ol ul {
+       display: block;
+       margin-left: 40px;
+}
+
+.reveal dt {
+       font-weight: bold;
+}
+
+.reveal dd {
+       margin-left: 40px;
+}
+
+.reveal blockquote {
+       display: block;
+       position: relative;
+       width: 70%;
+       margin: $blockMargin auto;
+       padding: 5px;
+
+       font-style: italic;
+       background: rgba(255, 255, 255, 0.05);
+       box-shadow: 0px 0px 2px rgba(0,0,0,0.2);
+}
+       .reveal blockquote p:first-child,
+       .reveal blockquote p:last-child {
+               display: inline-block;
+       }
+
+.reveal q {
+       font-style: italic;
+}
+
+.reveal pre {
+       display: block;
+       position: relative;
+       width: 90%;
+       margin: $blockMargin auto;
+
+       text-align: left;
+       font-size: 0.55em;
+       font-family: $codeFont;
+       line-height: 1.2em;
+
+       word-wrap: break-word;
+
+       box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.15);
+}
+
+.reveal code {
+       font-family: $codeFont;
+       text-transform: none;
+}
+
+.reveal pre code {
+       display: block;
+       padding: 5px;
+       overflow: auto;
+       max-height: 400px;
+       word-wrap: normal;
+}
+
+.reveal table {
+       margin: auto;
+       border-collapse: collapse;
+       border-spacing: 0;
+}
+
+.reveal table th {
+       font-weight: bold;
+}
+
+.reveal table th,
+.reveal table td {
+       text-align: left;
+       padding: 0.2em 0.5em 0.2em 0.5em;
+       border-bottom: 1px solid;
+}
+
+.reveal table th[align="center"],
+.reveal table td[align="center"] {
+       text-align: center;
+}
+
+.reveal table th[align="right"],
+.reveal table td[align="right"] {
+       text-align: right;
+}
+
+.reveal table tbody tr:last-child th,
+.reveal table tbody tr:last-child td {
+       border-bottom: none;
+}
+
+.reveal sup {
+       vertical-align: super;
+       font-size: smaller;
+}
+.reveal sub {
+       vertical-align: sub;
+       font-size: smaller;
+}
+
+.reveal small {
+       display: inline-block;
+       font-size: 0.6em;
+       line-height: 1.2em;
+       vertical-align: top;
+}
+
+.reveal small * {
+       vertical-align: top;
+}
+
+
+/*********************************************
+ * LINKS
+ *********************************************/
+
+.reveal a {
+       color: $linkColor;
+       text-decoration: none;
+
+       -webkit-transition: color .15s ease;
+          -moz-transition: color .15s ease;
+               transition: color .15s ease;
+}
+       .reveal a:hover {
+               color: $linkColorHover;
+
+               text-shadow: none;
+               border: none;
+       }
+
+.reveal .roll span:after {
+       color: #fff;
+       background: darken( $linkColor, 15% );
+}
+
+
+/*********************************************
+ * IMAGES
+ *********************************************/
+
+.reveal section img {
+       margin: 15px 0px;
+       background: rgba(255,255,255,0.12);
+       border: 4px solid $mainColor;
+
+       box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);
+}
+
+       .reveal section img.plain {
+               border: 0;
+               box-shadow: none;
+       }
+
+       .reveal a img {
+               -webkit-transition: all .15s linear;
+                  -moz-transition: all .15s linear;
+                       transition: all .15s linear;
+       }
+
+       .reveal a:hover img {
+               background: rgba(255,255,255,0.2);
+               border-color: $linkColor;
+
+               box-shadow: 0 0 20px rgba(0, 0, 0, 0.55);
+       }
+
+
+/*********************************************
+ * NAVIGATION CONTROLS
+ *********************************************/
+
+.reveal .controls {
+       color: $linkColor;
+}
+
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+
+.reveal .progress {
+       background: rgba(0,0,0,0.2);
+       color: $linkColor;
+}
+       .reveal .progress span {
+               -webkit-transition: width 800ms cubic-bezier(0.260, 0.860, 
0.440, 0.985);
+                  -moz-transition: width 800ms cubic-bezier(0.260, 0.860, 
0.440, 0.985);
+                       transition: width 800ms cubic-bezier(0.260, 0.860, 
0.440, 0.985);
+       }
+
+/*********************************************
+ * PRINT BACKGROUND
+ *********************************************/
+ @media print {
+    .backgrounds {
+        background-color: $backgroundColor;
+    }
+}
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/white.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/white.css
new file mode 100644
index 0000000..43ef2c7
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/css/theme/white.css
@@ -0,0 +1,273 @@
+/**
+ * White theme for reveal.js. This is the opposite of the 'black' theme.
+ *
+ * By Hakim El Hattab, http://hakim.se
+ */
+@import url(../../lib/font/source-sans-pro/source-sans-pro.css);
+section.has-dark-background, section.has-dark-background h1, 
section.has-dark-background h2, section.has-dark-background h3, 
section.has-dark-background h4, section.has-dark-background h5, 
section.has-dark-background h6 {
+  color: #fff; }
+
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+body {
+  background: #fff;
+  background-color: #fff; }
+
+.reveal {
+  font-family: "Source Sans Pro", Helvetica, sans-serif;
+  font-size: 42px;
+  font-weight: normal;
+  color: #222; }
+
+::selection {
+  color: #fff;
+  background: #98bdef;
+  text-shadow: none; }
+
+::-moz-selection {
+  color: #fff;
+  background: #98bdef;
+  text-shadow: none; }
+
+.reveal .slides section,
+.reveal .slides section > section {
+  line-height: 1.3;
+  font-weight: inherit; }
+
+/*********************************************
+ * HEADERS
+ *********************************************/
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+  margin: 0 0 20px 0;
+  color: #222;
+  font-family: "Source Sans Pro", Helvetica, sans-serif;
+  font-weight: 600;
+  line-height: 1.2;
+  letter-spacing: normal;
+  text-transform: uppercase;
+  text-shadow: none;
+  word-wrap: break-word; }
+
+.reveal h1 {
+  font-size: 2.5em; }
+
+.reveal h2 {
+  font-size: 1.6em; }
+
+.reveal h3 {
+  font-size: 1.3em; }
+
+.reveal h4 {
+  font-size: 1em; }
+
+.reveal h1 {
+  text-shadow: none; }
+
+/*********************************************
+ * OTHER
+ *********************************************/
+.reveal p {
+  margin: 20px 0;
+  line-height: 1.3; }
+
+/* Ensure certain elements are never larger than the slide itself */
+.reveal img,
+.reveal video,
+.reveal iframe {
+  max-width: 95%;
+  max-height: 95%; }
+
+.reveal strong,
+.reveal b {
+  font-weight: bold; }
+
+.reveal em {
+  font-style: italic; }
+
+.reveal ol,
+.reveal dl,
+.reveal ul {
+  display: inline-block;
+  text-align: left;
+  margin: 0 0 0 1em; }
+
+.reveal ol {
+  list-style-type: decimal; }
+
+.reveal ul {
+  list-style-type: disc; }
+
+.reveal ul ul {
+  list-style-type: square; }
+
+.reveal ul ul ul {
+  list-style-type: circle; }
+
+.reveal ul ul,
+.reveal ul ol,
+.reveal ol ol,
+.reveal ol ul {
+  display: block;
+  margin-left: 40px; }
+
+.reveal dt {
+  font-weight: bold; }
+
+.reveal dd {
+  margin-left: 40px; }
+
+.reveal blockquote {
+  display: block;
+  position: relative;
+  width: 70%;
+  margin: 20px auto;
+  padding: 5px;
+  font-style: italic;
+  background: rgba(255, 255, 255, 0.05);
+  box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); }
+
+.reveal blockquote p:first-child,
+.reveal blockquote p:last-child {
+  display: inline-block; }
+
+.reveal q {
+  font-style: italic; }
+
+.reveal pre {
+  display: block;
+  position: relative;
+  width: 90%;
+  margin: 20px auto;
+  text-align: left;
+  font-size: 0.55em;
+  font-family: monospace;
+  line-height: 1.2em;
+  word-wrap: break-word;
+  box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.15); }
+
+.reveal code {
+  font-family: monospace;
+  text-transform: none; }
+
+.reveal pre code {
+  display: block;
+  padding: 5px;
+  overflow: auto;
+  max-height: 400px;
+  word-wrap: normal; }
+
+.reveal table {
+  margin: auto;
+  border-collapse: collapse;
+  border-spacing: 0; }
+
+.reveal table th {
+  font-weight: bold; }
+
+.reveal table th,
+.reveal table td {
+  text-align: left;
+  padding: 0.2em 0.5em 0.2em 0.5em;
+  border-bottom: 1px solid; }
+
+.reveal table th[align="center"],
+.reveal table td[align="center"] {
+  text-align: center; }
+
+.reveal table th[align="right"],
+.reveal table td[align="right"] {
+  text-align: right; }
+
+.reveal table tbody tr:last-child th,
+.reveal table tbody tr:last-child td {
+  border-bottom: none; }
+
+.reveal sup {
+  vertical-align: super;
+  font-size: smaller; }
+
+.reveal sub {
+  vertical-align: sub;
+  font-size: smaller; }
+
+.reveal small {
+  display: inline-block;
+  font-size: 0.6em;
+  line-height: 1.2em;
+  vertical-align: top; }
+
+.reveal small * {
+  vertical-align: top; }
+
+/*********************************************
+ * LINKS
+ *********************************************/
+.reveal a {
+  color: #2a76dd;
+  text-decoration: none;
+  -webkit-transition: color .15s ease;
+  -moz-transition: color .15s ease;
+  transition: color .15s ease; }
+
+.reveal a:hover {
+  color: #6ca0e8;
+  text-shadow: none;
+  border: none; }
+
+.reveal .roll span:after {
+  color: #fff;
+  background: #1a53a1; }
+
+/*********************************************
+ * IMAGES
+ *********************************************/
+.reveal section img {
+  margin: 15px 0px;
+  background: rgba(255, 255, 255, 0.12);
+  border: 4px solid #222;
+  box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
+
+.reveal section img.plain {
+  border: 0;
+  box-shadow: none; }
+
+.reveal a img {
+  -webkit-transition: all .15s linear;
+  -moz-transition: all .15s linear;
+  transition: all .15s linear; }
+
+.reveal a:hover img {
+  background: rgba(255, 255, 255, 0.2);
+  border-color: #2a76dd;
+  box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); }
+
+/*********************************************
+ * NAVIGATION CONTROLS
+ *********************************************/
+.reveal .controls {
+  color: #2a76dd; }
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+.reveal .progress {
+  background: rgba(0, 0, 0, 0.2);
+  color: #2a76dd; }
+
+.reveal .progress span {
+  -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+  transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+/*********************************************
+ * PRINT BACKGROUND
+ *********************************************/
+@media print {
+  .backgrounds {
+    background-color: #fff; } }
diff --git a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/demo.html 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/demo.html
new file mode 100644
index 0000000..6743d27
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/demo.html
@@ -0,0 +1,425 @@
+<!doctype html>
+<html lang="en">
+
+       <head>
+               <meta charset="utf-8">
+
+               <title>reveal.js – The HTML Presentation Framework</title>
+
+               <meta name="description" content="A framework for easily 
creating beautiful presentations using HTML">
+               <meta name="author" content="Hakim El Hattab">
+
+               <meta name="apple-mobile-web-app-capable" content="yes">
+               <meta name="apple-mobile-web-app-status-bar-style" 
content="black-translucent">
+
+               <meta name="viewport" content="width=device-width, 
initial-scale=1.0">
+
+               <link rel="stylesheet" href="css/reset.css">
+               <link rel="stylesheet" href="css/reveal.css">
+               <link rel="stylesheet" href="css/theme/black.css" id="theme">
+
+               <!-- Theme used for syntax highlighting of code -->
+               <link rel="stylesheet" href="lib/css/monokai.css">
+
+               <!-- Printing and PDF exports -->
+               <script>
+                       var link = document.createElement( 'link' );
+                       link.rel = 'stylesheet';
+                       link.type = 'text/css';
+                       link.href = window.location.search.match( /print-pdf/gi 
) ? 'css/print/pdf.css' : 'css/print/paper.css';
+                       document.getElementsByTagName( 'head' )[0].appendChild( 
link );
+               </script>
+
+               <!--[if lt IE 9]>
+               <script src="lib/js/html5shiv.js"></script>
+               <![endif]-->
+       </head>
+
+       <body>
+
+               <div class="reveal">
+
+                       <!-- Any section element inside of this container is 
displayed as a slide -->
+                       <div class="slides">
+                               <section>
+                                       <h1>Reveal.js</h1>
+                                       <h3>The HTML Presentation Framework</h3>
+                                       <p>
+                                               <small>Created by <a 
href="http://hakim.se";>Hakim El Hattab</a> and <a 
href="https://github.com/hakimel/reveal.js/graphs/contributors";>contributors</a></small>
+                                       </p>
+                               </section>
+
+                               <section>
+                                       <h2>Hello There</h2>
+                                       <p>
+                                               reveal.js enables you to create 
beautiful interactive slide decks using HTML. This presentation will show you 
examples of what it can do.
+                                       </p>
+                               </section>
+
+                               <!-- Example of nested vertical slides -->
+                               <section>
+                                       <section>
+                                               <h2>Vertical Slides</h2>
+                                               <p>Slides can be nested inside 
of each other.</p>
+                                               <p>Use the <em>Space</em> key 
to navigate through all slides.</p>
+                                               <br>
+                                               <a href="#" 
class="navigate-down">
+                                                       <img width="178" 
height="238" 
data-src="https://s3.amazonaws.com/hakim-static/reveal-js/arrow.png"; alt="Down 
arrow">
+                                               </a>
+                                       </section>
+                                       <section>
+                                               <h2>Basement Level 1</h2>
+                                               <p>Nested slides are useful for 
adding additional detail underneath a high level horizontal slide.</p>
+                                       </section>
+                                       <section>
+                                               <h2>Basement Level 2</h2>
+                                               <p>That's it, time to go back 
up.</p>
+                                               <br>
+                                               <a href="#/2">
+                                                       <img width="178" 
height="238" 
data-src="https://s3.amazonaws.com/hakim-static/reveal-js/arrow.png"; alt="Up 
arrow" style="transform: rotate(180deg); -webkit-transform: rotate(180deg);">
+                                               </a>
+                                       </section>
+                               </section>
+
+                               <section>
+                                       <h2>Slides</h2>
+                                       <p>
+                                               Not a coder? Not a problem. 
There's a fully-featured visual editor for authoring these, try it out at <a 
href="https://slides.com"; target="_blank">https://slides.com</a>.
+                                       </p>
+                               </section>
+
+                               <section>
+                                       <h2>Point of View</h2>
+                                       <p>
+                                               Press <strong>ESC</strong> to 
enter the slide overview.
+                                       </p>
+                                       <p>
+                                               Hold down the 
<strong>alt</strong> key (<strong>ctrl</strong> in Linux) and click on any 
element to zoom towards it using <a 
href="http://lab.hakim.se/zoom-js";>zoom.js</a>. Click again to zoom back out.
+                                       </p>
+                                       <p>
+                                               (NOTE: Use ctrl + click in 
Linux.)
+                                       </p>
+                               </section>
+
+                               <section>
+                                       <h2>Touch Optimized</h2>
+                                       <p>
+                                               Presentations look great on 
touch devices, like mobile phones and tablets. Simply swipe through your slides.
+                                       </p>
+                               </section>
+
+                               <section data-markdown>
+                                       <script type="text/template">
+                                               ## Markdown support
+
+                                               Write content using inline or 
external Markdown.
+                                               Instructions and more info 
available in the [readme](https://github.com/hakimel/reveal.js#markdown).
+
+                                               ```
+                                               <section data-markdown>
+                                                 ## Markdown support
+
+                                                 Write content using inline or 
external Markdown.
+                                                 Instructions and more info 
available in the [readme](https://github.com/hakimel/reveal.js#markdown).
+                                               </section>
+                                               ```
+                                       </script>
+                               </section>
+
+                               <section>
+                                       <section id="fragments">
+                                               <h2>Fragments</h2>
+                                               <p>Hit the next arrow...</p>
+                                               <p class="fragment">... to step 
through ...</p>
+                                               <p><span class="fragment">... 
a</span> <span class="fragment">fragmented</span> <span 
class="fragment">slide.</span></p>
+
+                                               <aside class="notes">
+                                                       This slide has 
fragments which are also stepped through in the notes window.
+                                               </aside>
+                                       </section>
+                                       <section>
+                                               <h2>Fragment Styles</h2>
+                                               <p>There's different types of 
fragments, like:</p>
+                                               <p class="fragment 
grow">grow</p>
+                                               <p class="fragment 
shrink">shrink</p>
+                                               <p class="fragment 
fade-out">fade-out</p>
+                                               <p>
+                                                       <span style="display: 
inline-block;" class="fragment fade-right">fade-right, </span>
+                                                       <span style="display: 
inline-block;" class="fragment fade-up">up, </span>
+                                                       <span style="display: 
inline-block;" class="fragment fade-down">down, </span>
+                                                       <span style="display: 
inline-block;" class="fragment fade-left">left</span>
+                                               </p>
+                                               <p class="fragment 
fade-in-then-out">fade-in-then-out</p>
+                                               <p class="fragment 
fade-in-then-semi-out">fade-in-then-semi-out</p>
+                                               <p>Highlight <span 
class="fragment highlight-red">red</span> <span class="fragment 
highlight-blue">blue</span> <span class="fragment 
highlight-green">green</span></p>
+                                       </section>
+                               </section>
+
+                               <section id="transitions">
+                                       <h2>Transition Styles</h2>
+                                       <p>
+                                               You can select from different 
transitions, like: <br>
+                                               <a 
href="?transition=none#/transitions">None</a> -
+                                               <a 
href="?transition=fade#/transitions">Fade</a> -
+                                               <a 
href="?transition=slide#/transitions">Slide</a> -
+                                               <a 
href="?transition=convex#/transitions">Convex</a> -
+                                               <a 
href="?transition=concave#/transitions">Concave</a> -
+                                               <a 
href="?transition=zoom#/transitions">Zoom</a>
+                                       </p>
+                               </section>
+
+                               <section id="themes">
+                                       <h2>Themes</h2>
+                                       <p>
+                                               reveal.js comes with a few 
themes built in: <br>
+                                               <!-- Hacks to swap themes after 
the page has loaded. Not flexible and only intended for the reveal.js demo 
deck. -->
+                                               <a href="#" 
onclick="document.getElementById('theme').setAttribute('href','css/theme/black.css');
 return false;">Black (default)</a> -
+                                               <a href="#" 
onclick="document.getElementById('theme').setAttribute('href','css/theme/white.css');
 return false;">White</a> -
+                                               <a href="#" 
onclick="document.getElementById('theme').setAttribute('href','css/theme/league.css');
 return false;">League</a> -
+                                               <a href="#" 
onclick="document.getElementById('theme').setAttribute('href','css/theme/sky.css');
 return false;">Sky</a> -
+                                               <a href="#" 
onclick="document.getElementById('theme').setAttribute('href','css/theme/beige.css');
 return false;">Beige</a> -
+                                               <a href="#" 
onclick="document.getElementById('theme').setAttribute('href','css/theme/simple.css');
 return false;">Simple</a> <br>
+                                               <a href="#" 
onclick="document.getElementById('theme').setAttribute('href','css/theme/serif.css');
 return false;">Serif</a> -
+                                               <a href="#" 
onclick="document.getElementById('theme').setAttribute('href','css/theme/blood.css');
 return false;">Blood</a> -
+                                               <a href="#" 
onclick="document.getElementById('theme').setAttribute('href','css/theme/night.css');
 return false;">Night</a> -
+                                               <a href="#" 
onclick="document.getElementById('theme').setAttribute('href','css/theme/moon.css');
 return false;">Moon</a> -
+                                               <a href="#" 
onclick="document.getElementById('theme').setAttribute('href','css/theme/solarized.css');
 return false;">Solarized</a>
+                                       </p>
+                               </section>
+
+                               <section>
+                                       <section data-background="#dddddd">
+                                               <h2>Slide Backgrounds</h2>
+                                               <p>
+                                                       Set 
<code>data-background="#dddddd"</code> on a slide to change the background 
color. All CSS color formats are supported.
+                                               </p>
+                                               <a href="#" 
class="navigate-down">
+                                                       <img width="178" 
height="238" 
data-src="https://s3.amazonaws.com/hakim-static/reveal-js/arrow.png"; alt="Down 
arrow">
+                                               </a>
+                                       </section>
+                                       <section 
data-background="https://s3.amazonaws.com/hakim-static/reveal-js/image-placeholder.png";>
+                                               <h2>Image Backgrounds</h2>
+                                               <pre><code class="hljs 
html">&lt;section data-background="image.png"&gt;</code></pre>
+                                       </section>
+                                       <section 
data-background="https://s3.amazonaws.com/hakim-static/reveal-js/image-placeholder.png";
 data-background-repeat="repeat" data-background-size="100px">
+                                               <h2>Tiled Backgrounds</h2>
+                                               <pre><code class="hljs html" 
style="word-wrap: break-word;">&lt;section data-background="image.png" 
data-background-repeat="repeat" data-background-size="100px"&gt;</code></pre>
+                                       </section>
+                                       <section 
data-background-video="https://s3.amazonaws.com/static.slid.es/site/homepage/v1/homepage-video-editor.mp4,https://s3.amazonaws.com/static.slid.es/site/homepage/v1/homepage-video-editor.webm";
 data-background-color="#000000">
+                                               <div style="background-color: 
rgba(0, 0, 0, 0.9); color: #fff; padding: 20px;">
+                                                       <h2>Video 
Backgrounds</h2>
+                                                       <pre><code class="hljs 
html" style="word-wrap: break-word;">&lt;section 
data-background-video="video.mp4,video.webm"&gt;</code></pre>
+                                               </div>
+                                       </section>
+                                       <section 
data-background="http://i.giphy.com/90F8aUepslB84.gif";>
+                                               <h2>... and GIFs!</h2>
+                                       </section>
+                               </section>
+
+                               <section data-transition="slide" 
data-background="#4d7e65" data-background-transition="zoom">
+                                       <h2>Background Transitions</h2>
+                                       <p>
+                                               Different background 
transitions are available via the backgroundTransition option. This one's 
called "zoom".
+                                       </p>
+                                       <pre><code class="hljs 
javascript">Reveal.configure({ backgroundTransition: 'zoom' })</code></pre>
+                               </section>
+
+                               <section data-transition="slide" 
data-background="#b5533c" data-background-transition="zoom">
+                                       <h2>Background Transitions</h2>
+                                       <p>
+                                               You can override background 
transitions per-slide.
+                                       </p>
+                                       <pre><code class="hljs html" 
style="word-wrap: break-word;">&lt;section 
data-background-transition="zoom"&gt;</code></pre>
+                               </section>
+
+                               <section 
data-background-iframe="https://hakim.se"; data-background-interactive>
+                                       <div style="position: absolute; width: 
40%; right: 0; box-shadow: 0 1px 4px rgba(0,0,0,0.5), 0 5px 25px 
rgba(0,0,0,0.2); background-color: rgba(0, 0, 0, 0.9); color: #fff; padding: 
20px; font-size: 20px; text-align: left;">
+                                               <h2>Iframe Backgrounds</h2>
+                                               <p>Since reveal.js runs on the 
web, you can easily embed other web content. Try interacting with the page in 
the background.</p>
+                                       </div>
+                               </section>
+
+                               <section>
+                                       <h2>Pretty Code</h2>
+                                       <pre><code class="hljs" data-trim 
data-line-numbers="4,8-9">
+import React, { useState } from 'react';
+
+function Example() {
+  const [count, setCount] = useState(0);
+
+  return (
+    &lt;div&gt;
+      &lt;p&gt;You clicked {count} times&lt;/p&gt;
+      &lt;button onClick={() =&gt; setCount(count + 1)}&gt;
+        Click me
+      &lt;/button&gt;
+    &lt;/div&gt;
+  );
+}
+                                       </code></pre>
+                                       <p>Code syntax highlighting courtesy of 
<a 
href="http://softwaremaniacs.org/soft/highlight/en/description/";>highlight.js</a>.</p>
+                               </section>
+
+                               <section>
+                                       <h2>Marvelous List</h2>
+                                       <ul>
+                                               <li>No order here</li>
+                                               <li>Or here</li>
+                                               <li>Or here</li>
+                                               <li>Or here</li>
+                                       </ul>
+                               </section>
+
+                               <section>
+                                       <h2>Fantastic Ordered List</h2>
+                                       <ol>
+                                               <li>One is smaller than...</li>
+                                               <li>Two is smaller than...</li>
+                                               <li>Three!</li>
+                                       </ol>
+                               </section>
+
+                               <section>
+                                       <h2>Tabular Tables</h2>
+                                       <table>
+                                               <thead>
+                                                       <tr>
+                                                               <th>Item</th>
+                                                               <th>Value</th>
+                                                               
<th>Quantity</th>
+                                                       </tr>
+                                               </thead>
+                                               <tbody>
+                                                       <tr>
+                                                               <td>Apples</td>
+                                                               <td>$1</td>
+                                                               <td>7</td>
+                                                       </tr>
+                                                       <tr>
+                                                               
<td>Lemonade</td>
+                                                               <td>$2</td>
+                                                               <td>18</td>
+                                                       </tr>
+                                                       <tr>
+                                                               <td>Bread</td>
+                                                               <td>$3</td>
+                                                               <td>2</td>
+                                                       </tr>
+                                               </tbody>
+                                       </table>
+                               </section>
+
+                               <section>
+                                       <h2>Clever Quotes</h2>
+                                       <p>
+                                               These guys come in two forms, 
inline: <q 
cite="http://searchservervirtualization.techtarget.com/definition/Our-Favorite-Technology-Quotations";>The
 nice thing about standards is that there are so many to choose from</q> and 
block:
+                                       </p>
+                                       <blockquote 
cite="http://searchservervirtualization.techtarget.com/definition/Our-Favorite-Technology-Quotations";>
+                                               &ldquo;For years there has been 
a theory that millions of monkeys typing at random on millions of typewriters 
would
+                                               reproduce the entire works of 
Shakespeare. The Internet has proven this theory to be untrue.&rdquo;
+                                       </blockquote>
+                               </section>
+
+                               <section>
+                                       <h2>Intergalactic Interconnections</h2>
+                                       <p>
+                                               You can link between slides 
internally,
+                                               <a href="#/2/3">like this</a>.
+                                       </p>
+                               </section>
+
+                               <section>
+                                       <h2>Speaker View</h2>
+                                       <p>There's a <a 
href="https://github.com/hakimel/reveal.js#speaker-notes";>speaker view</a>. It 
includes a timer, preview of the upcoming slide as well as your speaker 
notes.</p>
+                                       <p>Press the <em>S</em> key to try it 
out.</p>
+
+                                       <aside class="notes">
+                                               Oh hey, these are some notes. 
They'll be hidden in your presentation, but you can see them if you open the 
speaker notes window (hit 's' on your keyboard).
+                                       </aside>
+                               </section>
+
+                               <section>
+                                       <h2>Export to PDF</h2>
+                                       <p>Presentations can be <a 
href="https://github.com/hakimel/reveal.js#pdf-export";>exported to PDF</a>, 
here's an example:</p>
+                                       <iframe 
data-src="https://www.slideshare.net/slideshow/embed_code/42840540"; width="445" 
height="355" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" 
style="border:3px solid #666; margin-bottom:5px; max-width: 100%;" 
allowfullscreen> </iframe>
+                               </section>
+
+                               <section>
+                                       <h2>Global State</h2>
+                                       <p>
+                                               Set 
<code>data-state="something"</code> on a slide and <code>"something"</code>
+                                               will be added as a class to the 
document element when the slide is open. This lets you
+                                               apply broader style changes, 
like switching the page background.
+                                       </p>
+                               </section>
+
+                               <section data-state="customevent">
+                                       <h2>State Events</h2>
+                                       <p>
+                                               Additionally custom events can 
be triggered on a per slide basis by binding to the <code>data-state</code> 
name.
+                                       </p>
+                                       <pre><code class="javascript" data-trim 
contenteditable style="font-size: 18px;">
+Reveal.addEventListener( 'customevent', function() {
+       console.log( '"customevent" has fired' );
+} );
+                                       </code></pre>
+                               </section>
+
+                               <section>
+                                       <h2>Take a Moment</h2>
+                                       <p>
+                                               Press B or . on your keyboard 
to pause the presentation. This is helpful when you're on stage and want to 
take distracting slides off the screen.
+                                       </p>
+                               </section>
+
+                               <section>
+                                       <h2>Much more</h2>
+                                       <ul>
+                                               <li>Right-to-left support</li>
+                                               <li><a 
href="https://github.com/hakimel/reveal.js#api";>Extensive JavaScript 
API</a></li>
+                                               <li><a 
href="https://github.com/hakimel/reveal.js#auto-sliding";>Auto-progression</a></li>
+                                               <li><a 
href="https://github.com/hakimel/reveal.js#parallax-background";>Parallax 
backgrounds</a></li>
+                                               <li><a 
href="https://github.com/hakimel/reveal.js#keyboard-bindings";>Custom keyboard 
bindings</a></li>
+                                       </ul>
+                               </section>
+
+                               <section style="text-align: left;">
+                                       <h1>THE END</h1>
+                                       <p>
+                                               - <a 
href="https://slides.com";>Try the online editor</a> <br>
+                                               - <a 
href="https://github.com/hakimel/reveal.js";>Source code &amp; documentation</a>
+                                       </p>
+                               </section>
+
+                       </div>
+
+               </div>
+
+               <script src="js/reveal.js"></script>
+
+               <script>
+
+                       // More info 
https://github.com/hakimel/reveal.js#configuration
+                       Reveal.initialize({
+                               controls: true,
+                               progress: true,
+                               center: true,
+                               hash: true,
+
+                               transition: 'slide', // 
none/fade/slide/convex/concave/zoom
+
+                               // More info 
https://github.com/hakimel/reveal.js#dependencies
+                               dependencies: [
+                                       { src: 'plugin/markdown/marked.js', 
condition: function() { return !!document.querySelector( '[data-markdown]' ); } 
},
+                                       { src: 'plugin/markdown/markdown.js', 
condition: function() { return !!document.querySelector( '[data-markdown]' ); } 
},
+                                       { src: 'plugin/highlight/highlight.js', 
async: true },
+                                       { src: 'plugin/search/search.js', 
async: true },
+                                       { src: 'plugin/zoom-js/zoom.js', async: 
true },
+                                       { src: 'plugin/notes/notes.js', async: 
true }
+                               ]
+                       });
+
+               </script>
+
+       </body>
+</html>
diff --git a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/gruntfile.js 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/gruntfile.js
new file mode 100644
index 0000000..edebddd
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/gruntfile.js
@@ -0,0 +1,192 @@
+const sass = require('node-sass');
+
+module.exports = grunt => {
+
+       require('load-grunt-tasks')(grunt);
+
+       let port = grunt.option('port') || 8000;
+       let root = grunt.option('root') || '.';
+
+       if (!Array.isArray(root)) root = [root];
+
+       // Project configuration
+       grunt.initConfig({
+               pkg: grunt.file.readJSON('package.json'),
+               meta: {
+                       banner:
+                               '/*!\n' +
+                               ' * reveal.js <%= pkg.version %> (<%= 
grunt.template.today("yyyy-mm-dd, HH:MM") %>)\n' +
+                               ' * http://revealjs.com\n' +
+                               ' * MIT licensed\n' +
+                               ' *\n' +
+                               ' * Copyright (C) 2019 Hakim El Hattab, 
http://hakim.se\n' +
+                               ' */'
+               },
+
+               qunit: {
+                       files: [ 'test/*.html' ]
+               },
+
+               uglify: {
+                       options: {
+                               banner: '<%= meta.banner %>\n',
+                               ie8: true
+                       },
+                       build: {
+                               src: 'js/reveal.js',
+                               dest: 'js/reveal.min.js'
+                       }
+               },
+
+               sass: {
+                       options: {
+                               implementation: sass,
+                               sourceMap: false
+                       },
+                       core: {
+                               src: 'css/reveal.scss',
+                               dest: 'css/reveal.css'
+                       },
+                       themes: {
+                               expand: true,
+                               cwd: 'css/theme/source',
+                               src: ['*.sass', '*.scss'],
+                               dest: 'css/theme',
+                               ext: '.css'
+                       }
+               },
+
+               autoprefixer: {
+                       core: {
+                               src: 'css/reveal.css'
+                       }
+               },
+
+               cssmin: {
+                       options: {
+                               compatibility: 'ie9'
+                       },
+                       compress: {
+                               src: 'css/reveal.css',
+                               dest: 'css/reveal.min.css'
+                       }
+               },
+
+               jshint: {
+                       options: {
+                               curly: false,
+                               eqeqeq: true,
+                               immed: true,
+                               esnext: true,
+                               latedef: 'nofunc',
+                               newcap: true,
+                               noarg: true,
+                               sub: true,
+                               undef: true,
+                               eqnull: true,
+                               browser: true,
+                               expr: true,
+                               loopfunc: true,
+                               globals: {
+                                       head: false,
+                                       module: false,
+                                       console: false,
+                                       unescape: false,
+                                       define: false,
+                                       exports: false,
+                                       require: false
+                               }
+                       },
+                       files: [ 'gruntfile.js', 'js/reveal.js' ]
+               },
+
+               connect: {
+                       server: {
+                               options: {
+                                       port: port,
+                                       base: root,
+                                       livereload: true,
+                                       open: true,
+                                       useAvailablePort: true
+                               }
+                       }
+               },
+
+               zip: {
+                       bundle: {
+                               src: [
+                                       'index.html',
+                                       'css/**',
+                                       'js/**',
+                                       'lib/**',
+                                       'images/**',
+                                       'plugin/**',
+                                       '**.md'
+                               ],
+                               dest: 'reveal-js-presentation.zip'
+                       }
+               },
+
+               watch: {
+                       js: {
+                               files: [ 'gruntfile.js', 'js/reveal.js' ],
+                               tasks: 'js'
+                       },
+                       theme: {
+                               files: [
+                                       'css/theme/source/*.sass',
+                                       'css/theme/source/*.scss',
+                                       'css/theme/template/*.sass',
+                                       'css/theme/template/*.scss'
+                               ],
+                               tasks: 'css-themes'
+                       },
+                       css: {
+                               files: [ 'css/reveal.scss' ],
+                               tasks: 'css-core'
+                       },
+                       test: {
+                               files: [ 'test/*.html' ],
+                               tasks: 'test'
+                       },
+                       html: {
+                               files: root.map(path => path + '/*.html')
+                       },
+                       markdown: {
+                               files: root.map(path => path + '/*.md')
+                       },
+                       options: {
+                               livereload: true
+                       }
+               }
+
+       });
+
+       grunt.loadNpmTasks('grunt-contrib-clean');
+       grunt.loadNpmTasks('grunt-contrib-nodeunit');
+
+       // Default task
+       grunt.registerTask( 'default', [ 'css', 'js' ] );
+
+       // JS task
+       grunt.registerTask( 'js', [ 'jshint', 'uglify', 'qunit' ] );
+
+       // Theme CSS
+       grunt.registerTask( 'css-themes', [ 'sass:themes' ] );
+
+       // Core framework CSS
+       grunt.registerTask( 'css-core', [ 'sass:core', 'autoprefixer', 'cssmin' 
] );
+
+       // All CSS
+       grunt.registerTask( 'css', [ 'sass', 'autoprefixer', 'cssmin' ] );
+
+       // Package presentation to archive
+       grunt.registerTask( 'package', [ 'default', 'zip' ] );
+
+       // Serve presentation locally
+       grunt.registerTask( 'serve', [ 'connect', 'watch' ] );
+
+       // Run tests
+       grunt.registerTask( 'test', [ 'jshint', 'qunit' ] );
+
+};
diff --git a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/js/reveal.js 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/js/reveal.js
new file mode 100644
index 0000000..5c026db
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/js/reveal.js
@@ -0,0 +1,6028 @@
+/*!
+ * reveal.js
+ * http://revealjs.com
+ * MIT licensed
+ *
+ * Copyright (C) 2019 Hakim El Hattab, http://hakim.se
+ */
+(function( root, factory ) {
+       if( typeof define === 'function' && define.amd ) {
+               // AMD. Register as an anonymous module.
+               define( function() {
+                       root.Reveal = factory();
+                       return root.Reveal;
+               } );
+       } else if( typeof exports === 'object' ) {
+               // Node. Does not work with strict CommonJS.
+               module.exports = factory();
+       } else {
+               // Browser globals.
+               root.Reveal = factory();
+       }
+}( this, function() {
+
+       'use strict';
+
+       var Reveal;
+
+       // The reveal.js version
+       var VERSION = '3.8.0';
+
+       var SLIDES_SELECTOR = '.slides section',
+               HORIZONTAL_SLIDES_SELECTOR = '.slides>section',
+               VERTICAL_SLIDES_SELECTOR = '.slides>section.present>section',
+               HOME_SLIDE_SELECTOR = '.slides>section:first-of-type',
+               UA = navigator.userAgent,
+
+               // Configuration defaults, can be overridden at initialization 
time
+               config = {
+
+                       // The "normal" size of the presentation, aspect ratio 
will be preserved
+                       // when the presentation is scaled to fit different 
resolutions
+                       width: 960,
+                       height: 700,
+
+                       // Factor of the display size that should remain empty 
around the content
+                       margin: 0.04,
+
+                       // Bounds for smallest/largest possible scale to apply 
to content
+                       minScale: 0.2,
+                       maxScale: 2.0,
+
+                       // Display presentation control arrows
+                       controls: true,
+
+                       // Help the user learn the controls by providing hints, 
for example by
+                       // bouncing the down arrow when they first encounter a 
vertical slide
+                       controlsTutorial: true,
+
+                       // Determines where controls appear, "edges" or 
"bottom-right"
+                       controlsLayout: 'bottom-right',
+
+                       // Visibility rule for backwards navigation arrows; 
"faded", "hidden"
+                       // or "visible"
+                       controlsBackArrows: 'faded',
+
+                       // Display a presentation progress bar
+                       progress: true,
+
+                       // Display the page number of the current slide
+                       // - true:    Show slide number
+                       // - false:   Hide slide number
+                       //
+                       // Can optionally be set as a string that specifies the 
number formatting:
+                       // - "h.v":       Horizontal . vertical slide number 
(default)
+                       // - "h/v":       Horizontal / vertical slide number
+                       // - "c":         Flattened slide number
+                       // - "c/t":       Flattened slide number / total slides
+                       //
+                       // Alternatively, you can provide a function that 
returns the slide
+                       // number for the current slide. The function needs to 
return an array
+                       // with one string [slideNumber] or three strings 
[n1,delimiter,n2].
+                       // See #formatSlideNumber().
+                       slideNumber: false,
+
+                       // Can be used to limit the contexts in which the slide 
number appears
+                       // - "all":      Always show the slide number
+                       // - "print":    Only when printing to PDF
+                       // - "speaker":  Only in the speaker view
+                       showSlideNumber: 'all',
+
+                       // Use 1 based indexing for # links to match slide 
number (default is zero
+                       // based)
+                       hashOneBasedIndex: false,
+
+                       // Add the current slide number to the URL hash so that 
reloading the
+                       // page/copying the URL will return you to the same 
slide
+                       hash: false,
+
+                       // Push each slide change to the browser history.  
Implies `hash: true`
+                       history: false,
+
+                       // Enable keyboard shortcuts for navigation
+                       keyboard: true,
+
+                       // Optional function that blocks keyboard events when 
retuning false
+                       keyboardCondition: null,
+
+                       // Enable the slide overview mode
+                       overview: true,
+
+                       // Disables the default reveal.js slide layout so that 
you can use
+                       // custom CSS layout
+                       disableLayout: false,
+
+                       // Vertical centering of slides
+                       center: true,
+
+                       // Enables touch navigation on devices with touch input
+                       touch: true,
+
+                       // Loop the presentation
+                       loop: false,
+
+                       // Change the presentation direction to be RTL
+                       rtl: false,
+
+                       // Changes the behavior of our navigation directions.
+                       //
+                       // "default"
+                       // Left/right arrow keys step between horizontal 
slides, up/down
+                       // arrow keys step between vertical slides. Space key 
steps through
+                       // all slides (both horizontal and vertical).
+                       //
+                       // "linear"
+                       // Removes the up/down arrows. Left/right arrows step 
through all
+                       // slides (both horizontal and vertical).
+                       //
+                       // "grid"
+                       // When this is enabled, stepping left/right from a 
vertical stack
+                       // to an adjacent vertical stack will land you at the 
same vertical
+                       // index.
+                       //
+                       // Consider a deck with six slides ordered in two 
vertical stacks:
+                       // 1.1    2.1
+                       // 1.2    2.2
+                       // 1.3    2.3
+                       //
+                       // If you're on slide 1.3 and navigate right, you will 
normally move
+                       // from 1.3 -> 2.1. If "grid" is used, the same 
navigation takes you
+                       // from 1.3 -> 2.3.
+                       navigationMode: 'default',
+
+                       // Randomizes the order of slides each time the 
presentation loads
+                       shuffle: false,
+
+                       // Turns fragments on and off globally
+                       fragments: true,
+
+                       // Flags whether to include the current fragment in the 
URL,
+                       // so that reloading brings you to the same fragment 
position
+                       fragmentInURL: false,
+
+                       // Flags if the presentation is running in an embedded 
mode,
+                       // i.e. contained within a limited portion of the screen
+                       embedded: false,
+
+                       // Flags if we should show a help overlay when the 
question-mark
+                       // key is pressed
+                       help: true,
+
+                       // Flags if it should be possible to pause the 
presentation (blackout)
+                       pause: true,
+
+                       // Flags if speaker notes should be visible to all 
viewers
+                       showNotes: false,
+
+                       // Global override for autolaying embedded media 
(video/audio/iframe)
+                       // - null:   Media will only autoplay if data-autoplay 
is present
+                       // - true:   All media will autoplay, regardless of 
individual setting
+                       // - false:  No media will autoplay, regardless of 
individual setting
+                       autoPlayMedia: null,
+
+                       // Global override for preloading lazy-loaded iframes
+                       // - null:   Iframes with data-src AND data-preload 
will be loaded when within
+                       //           the viewDistance, iframes with only 
data-src will be loaded when visible
+                       // - true:   All iframes with data-src will be loaded 
when within the viewDistance
+                       // - false:  All iframes with data-src will be loaded 
only when visible
+                       preloadIframes: null,
+
+                       // Controls automatic progression to the next slide
+                       // - 0:      Auto-sliding only happens if the 
data-autoslide HTML attribute
+                       //           is present on the current slide or fragment
+                       // - 1+:     All slides will progress automatically at 
the given interval
+                       // - false:  No auto-sliding, even if data-autoslide is 
present
+                       autoSlide: 0,
+
+                       // Stop auto-sliding after user input
+                       autoSlideStoppable: true,
+
+                       // Use this method for navigation when auto-sliding 
(defaults to navigateNext)
+                       autoSlideMethod: null,
+
+                       // Specify the average time in seconds that you think 
you will spend
+                       // presenting each slide. This is used to show a pacing 
timer in the
+                       // speaker view
+                       defaultTiming: null,
+
+                       // Enable slide navigation via mouse wheel
+                       mouseWheel: false,
+
+                       // Apply a 3D roll to links on hover
+                       rollingLinks: false,
+
+                       // Hides the address bar on mobile devices
+                       hideAddressBar: true,
+
+                       // Opens links in an iframe preview overlay
+                       // Add `data-preview-link` and 
`data-preview-link="false"` to customise each link
+                       // individually
+                       previewLinks: false,
+
+                       // Exposes the reveal.js API through window.postMessage
+                       postMessage: true,
+
+                       // Dispatches all reveal.js events to the parent window 
through postMessage
+                       postMessageEvents: false,
+
+                       // Focuses body when page changes visibility to ensure 
keyboard shortcuts work
+                       focusBodyOnPageVisibilityChange: true,
+
+                       // Transition style
+                       transition: 'slide', // 
none/fade/slide/convex/concave/zoom
+
+                       // Transition speed
+                       transitionSpeed: 'default', // default/fast/slow
+
+                       // Transition style for full page slide backgrounds
+                       backgroundTransition: 'fade', // 
none/fade/slide/convex/concave/zoom
+
+                       // Parallax background image
+                       parallaxBackgroundImage: '', // CSS syntax, e.g. "a.jpg"
+
+                       // Parallax background size
+                       parallaxBackgroundSize: '', // CSS syntax, e.g. "3000px 
2000px"
+
+                       // Parallax background repeat
+                       parallaxBackgroundRepeat: '', // 
repeat/repeat-x/repeat-y/no-repeat/initial/inherit
+
+                       // Parallax background position
+                       parallaxBackgroundPosition: '', // CSS syntax, e.g. 
"top left"
+
+                       // Amount of pixels to move the parallax background per 
slide step
+                       parallaxBackgroundHorizontal: null,
+                       parallaxBackgroundVertical: null,
+
+                       // The maximum number of pages a single slide can 
expand onto when printing
+                       // to PDF, unlimited by default
+                       pdfMaxPagesPerSlide: Number.POSITIVE_INFINITY,
+
+                       // Prints each fragment on a separate slide
+                       pdfSeparateFragments: true,
+
+                       // Offset used to reduce the height of content within 
exported PDF pages.
+                       // This exists to account for environment differences 
based on how you
+                       // print to PDF. CLI printing options, like phantomjs 
and wkpdf, can end
+                       // on precisely the total height of the document 
whereas in-browser
+                       // printing has to end one pixel before.
+                       pdfPageHeightOffset: -1,
+
+                       // Number of slides away from the current that are 
visible
+                       viewDistance: 3,
+
+                       // The display mode that will be used to show slides
+                       display: 'block',
+
+                       // Hide cursor if inactive
+                       hideInactiveCursor: true,
+
+                       // Time before the cursor is hidden (in ms)
+                       hideCursorTime: 5000,
+
+                       // Script dependencies to load
+                       dependencies: []
+
+               },
+
+               // Flags if Reveal.initialize() has been called
+               initialized = false,
+
+               // Flags if reveal.js is loaded (has dispatched the 'ready' 
event)
+               loaded = false,
+
+               // Flags if the overview mode is currently active
+               overview = false,
+
+               // Holds the dimensions of our overview slides, including 
margins
+               overviewSlideWidth = null,
+               overviewSlideHeight = null,
+
+               // The horizontal and vertical index of the currently active 
slide
+               indexh,
+               indexv,
+
+               // The previous and current slide HTML elements
+               previousSlide,
+               currentSlide,
+
+               previousBackground,
+
+               // Remember which directions that the user has navigated towards
+               hasNavigatedRight = false,
+               hasNavigatedDown = false,
+
+               // Slides may hold a data-state attribute which we pick up and 
apply
+               // as a class to the body. This list contains the combined 
state of
+               // all current slides.
+               state = [],
+
+               // The current scale of the presentation (see width/height 
config)
+               scale = 1,
+
+               // CSS transform that is currently applied to the slides 
container,
+               // split into two groups
+               slidesTransform = { layout: '', overview: '' },
+
+               // Cached references to DOM elements
+               dom = {},
+
+               // A list of registered reveal.js plugins
+               plugins = {},
+
+               // List of asynchronously loaded reveal.js dependencies
+               asyncDependencies = [],
+
+               // Features supported by the browser, see #checkCapabilities()
+               features = {},
+
+               // Client is a mobile device, see #checkCapabilities()
+               isMobileDevice,
+
+               // Client is a desktop Chrome, see #checkCapabilities()
+               isChrome,
+
+               // Throttles mouse wheel navigation
+               lastMouseWheelStep = 0,
+
+               // Delays updates to the URL due to a Chrome thumbnailer bug
+               writeURLTimeout = 0,
+
+               // Is the mouse pointer currently hidden from view
+               cursorHidden = false,
+
+               // Timeout used to determine when the cursor is inactive
+               cursorInactiveTimeout = 0,
+
+               // Flags if the interaction event listeners are bound
+               eventsAreBound = false,
+
+               // The current auto-slide duration
+               autoSlide = 0,
+
+               // Auto slide properties
+               autoSlidePlayer,
+               autoSlideTimeout = 0,
+               autoSlideStartTime = -1,
+               autoSlidePaused = false,
+
+               // Holds information about the currently ongoing touch input
+               touch = {
+                       startX: 0,
+                       startY: 0,
+                       startCount: 0,
+                       captured: false,
+                       threshold: 40
+               },
+
+               // A key:value map of shortcut keyboard keys and descriptions of
+               // the actions they trigger, generated in #configure()
+               keyboardShortcuts = {},
+
+               // Holds custom key code mappings
+               registeredKeyBindings = {};
+
+       /**
+        * Starts up the presentation if the client is capable.
+        */
+       function initialize( options ) {
+
+               // Make sure we only initialize once
+               if( initialized === true ) return;
+
+               initialized = true;
+
+               checkCapabilities();
+
+               if( !features.transforms2d && !features.transforms3d ) {
+                       document.body.setAttribute( 'class', 'no-transforms' );
+
+                       // Since JS won't be running any further, we load all 
lazy
+                       // loading elements upfront
+                       var images = toArray( document.getElementsByTagName( 
'img' ) ),
+                               iframes = toArray( 
document.getElementsByTagName( 'iframe' ) );
+
+                       var lazyLoadable = images.concat( iframes );
+
+                       for( var i = 0, len = lazyLoadable.length; i < len; i++ 
) {
+                               var element = lazyLoadable[i];
+                               if( element.getAttribute( 'data-src' ) ) {
+                                       element.setAttribute( 'src', 
element.getAttribute( 'data-src' ) );
+                                       element.removeAttribute( 'data-src' );
+                               }
+                       }
+
+                       // If the browser doesn't support core features we 
won't be
+                       // using JavaScript to control the presentation
+                       return;
+               }
+
+               // Cache references to key DOM elements
+               dom.wrapper = document.querySelector( '.reveal' );
+               dom.slides = document.querySelector( '.reveal .slides' );
+
+               // Force a layout when the whole page, incl fonts, has loaded
+               window.addEventListener( 'load', layout, false );
+
+               var query = Reveal.getQueryHash();
+
+               // Do not accept new dependencies via query config to avoid
+               // the potential of malicious script injection
+               if( typeof query['dependencies'] !== 'undefined' ) delete 
query['dependencies'];
+
+               // Copy options over to our config object
+               extend( config, options );
+               extend( config, query );
+
+               // Hide the address bar in mobile browsers
+               hideAddressBar();
+
+               // Loads dependencies and continues to #start() once done
+               load();
+
+       }
+
+       /**
+        * Inspect the client to see what it's capable of, this
+        * should only happens once per runtime.
+        */
+       function checkCapabilities() {
+
+               isMobileDevice = /(iphone|ipod|ipad|android)/gi.test( UA );
+               isChrome = /chrome/i.test( UA ) && !/edge/i.test( UA );
+
+               var testElement = document.createElement( 'div' );
+
+               features.transforms3d = 'WebkitPerspective' in 
testElement.style ||
+                                                               
'MozPerspective' in testElement.style ||
+                                                               'msPerspective' 
in testElement.style ||
+                                                               'OPerspective' 
in testElement.style ||
+                                                               'perspective' 
in testElement.style;
+
+               features.transforms2d = 'WebkitTransform' in testElement.style 
||
+                                                               'MozTransform' 
in testElement.style ||
+                                                               'msTransform' 
in testElement.style ||
+                                                               'OTransform' in 
testElement.style ||
+                                                               'transform' in 
testElement.style;
+
+               features.requestAnimationFrameMethod = 
window.requestAnimationFrame || window.webkitRequestAnimationFrame || 
window.mozRequestAnimationFrame;
+               features.requestAnimationFrame = typeof 
features.requestAnimationFrameMethod === 'function';
+
+               features.canvas = !!document.createElement( 'canvas' 
).getContext;
+
+               // Transitions in the overview are disabled in desktop and
+               // Safari due to lag
+               features.overviewTransitions = 
!/Version\/[\d\.]+.*Safari/.test( UA );
+
+               // Flags if we should use zoom instead of transform to scale
+               // up slides. Zoom produces crisper results but has a lot of
+               // xbrowser quirks so we only use it in whitelsited browsers.
+               features.zoom = 'zoom' in testElement.style && !isMobileDevice 
&&
+                                               ( isChrome || 
/Version\/[\d\.]+.*Safari/.test( UA ) );
+
+       }
+
+       /**
+        * Loads the dependencies of reveal.js. Dependencies are
+        * defined via the configuration option 'dependencies'
+        * and will be loaded prior to starting/binding reveal.js.
+        * Some dependencies may have an 'async' flag, if so they
+        * will load after reveal.js has been started up.
+        */
+       function load() {
+
+               var scripts = [],
+                       scriptsToLoad = 0;
+
+               config.dependencies.forEach( function( s ) {
+                       // Load if there's no condition or the condition is 
truthy
+                       if( !s.condition || s.condition() ) {
+                               if( s.async ) {
+                                       asyncDependencies.push( s );
+                               }
+                               else {
+                                       scripts.push( s );
+                               }
+                       }
+               } );
+
+               if( scripts.length ) {
+                       scriptsToLoad = scripts.length;
+
+                       // Load synchronous scripts
+                       scripts.forEach( function( s ) {
+                               loadScript( s.src, function() {
+
+                                       if( typeof s.callback === 'function' ) 
s.callback();
+
+                                       if( --scriptsToLoad === 0 ) {
+                                               initPlugins();
+                                       }
+
+                               } );
+                       } );
+               }
+               else {
+                       initPlugins();
+               }
+
+       }
+
+       /**
+        * Initializes our plugins and waits for them to be ready
+        * before proceeding.
+        */
+       function initPlugins() {
+
+               var pluginsToInitialize = Object.keys( plugins ).length;
+
+               // If there are no plugins, skip this step
+               if( pluginsToInitialize === 0 ) {
+                       loadAsyncDependencies();
+               }
+               // ... otherwise initialize plugins
+               else {
+
+                       var afterPlugInitialized = function() {
+                               if( --pluginsToInitialize === 0 ) {
+                                       loadAsyncDependencies();
+                               }
+                       };
+
+                       for( var i in plugins ) {
+
+                               var plugin = plugins[i];
+
+                               // If the plugin has an 'init' method, invoke it
+                               if( typeof plugin.init === 'function' ) {
+                                       var callback = plugin.init();
+
+                                       // If the plugin returned a Promise, 
wait for it
+                                       if( callback && typeof callback.then 
=== 'function' ) {
+                                               callback.then( 
afterPlugInitialized );
+                                       }
+                                       else {
+                                               afterPlugInitialized();
+                                       }
+                               }
+                               else {
+                                       afterPlugInitialized();
+                               }
+
+                       }
+
+               }
+
+       }
+
+       /**
+        * Loads all async reveal.js dependencies.
+        */
+       function loadAsyncDependencies() {
+
+               if( asyncDependencies.length ) {
+                       asyncDependencies.forEach( function( s ) {
+                               loadScript( s.src, s.callback );
+                       } );
+               }
+
+               start();
+
+       }
+
+       /**
+        * Loads a JavaScript file from the given URL and executes it.
+        *
+        * @param {string} url Address of the .js file to load
+        * @param {function} callback Method to invoke when the script
+        * has loaded and executed
+        */
+       function loadScript( url, callback ) {
+
+               var script = document.createElement( 'script' );
+               script.type = 'text/javascript';
+               script.async = false;
+               script.defer = false;
+               script.src = url;
+
+               if( callback ) {
+
+                       // Success callback
+                       script.onload = script.onreadystatechange = function( 
event ) {
+                               if( event.type === "load" || 
(/loaded|complete/.test( script.readyState ) ) ) {
+
+                                       // Kill event listeners
+                                       script.onload = 
script.onreadystatechange = script.onerror = null;
+
+                                       callback();
+
+                               }
+                       };
+
+                       // Error callback
+                       script.onerror = function( err ) {
+
+                               // Kill event listeners
+                               script.onload = script.onreadystatechange = 
script.onerror = null;
+
+                               callback( new Error( 'Failed loading script: ' 
+ script.src + '\n' + err) );
+
+                       };
+
+               }
+
+               // Append the script at the end of <head>
+               var head = document.querySelector( 'head' );
+               head.insertBefore( script, head.lastChild );
+
+       }
+
+       /**
+        * Starts up reveal.js by binding input events and navigating
+        * to the current URL deeplink if there is one.
+        */
+       function start() {
+
+               loaded = true;
+
+               // Make sure we've got all the DOM elements we need
+               setupDOM();
+
+               // Listen to messages posted to this window
+               setupPostMessage();
+
+               // Prevent the slides from being scrolled out of view
+               setupScrollPrevention();
+
+               // Resets all vertical slides so that only the first is visible
+               resetVerticalSlides();
+
+               // Updates the presentation to match the current configuration 
values
+               configure();
+
+               // Read the initial hash
+               readURL();
+
+               // Update all backgrounds
+               updateBackground( true );
+
+               // Notify listeners that the presentation is ready but use a 1ms
+               // timeout to ensure it's not fired synchronously after 
#initialize()
+               setTimeout( function() {
+                       // Enable transitions now that we're loaded
+                       dom.slides.classList.remove( 'no-transition' );
+
+                       dom.wrapper.classList.add( 'ready' );
+
+                       dispatchEvent( 'ready', {
+                               'indexh': indexh,
+                               'indexv': indexv,
+                               'currentSlide': currentSlide
+                       } );
+               }, 1 );
+
+               // Special setup and config is required when printing to PDF
+               if( isPrintingPDF() ) {
+                       removeEventListeners();
+
+                       // The document needs to have loaded for the PDF layout
+                       // measurements to be accurate
+                       if( document.readyState === 'complete' ) {
+                               setupPDF();
+                       }
+                       else {
+                               window.addEventListener( 'load', setupPDF );
+                       }
+               }
+
+       }
+
+       /**
+        * Finds and stores references to DOM elements which are
+        * required by the presentation. If a required element is
+        * not found, it is created.
+        */
+       function setupDOM() {
+
+               // Prevent transitions while we're loading
+               dom.slides.classList.add( 'no-transition' );
+
+               if( isMobileDevice ) {
+                       dom.wrapper.classList.add( 'no-hover' );
+               }
+               else {
+                       dom.wrapper.classList.remove( 'no-hover' );
+               }
+
+               if( /iphone/gi.test( UA ) ) {
+                       dom.wrapper.classList.add( 'ua-iphone' );
+               }
+               else {
+                       dom.wrapper.classList.remove( 'ua-iphone' );
+               }
+
+               // Background element
+               dom.background = createSingletonNode( dom.wrapper, 'div', 
'backgrounds', null );
+
+               // Progress bar
+               dom.progress = createSingletonNode( dom.wrapper, 'div', 
'progress', '<span></span>' );
+               dom.progressbar = dom.progress.querySelector( 'span' );
+
+               // Arrow controls
+               dom.controls = createSingletonNode( dom.wrapper, 'aside', 
'controls',
+                       '<button class="navigate-left" aria-label="previous 
slide"><div class="controls-arrow"></div></button>' +
+                       '<button class="navigate-right" aria-label="next 
slide"><div class="controls-arrow"></div></button>' +
+                       '<button class="navigate-up" aria-label="above 
slide"><div class="controls-arrow"></div></button>' +
+                       '<button class="navigate-down" aria-label="below 
slide"><div class="controls-arrow"></div></button>' );
+
+               // Slide number
+               dom.slideNumber = createSingletonNode( dom.wrapper, 'div', 
'slide-number', '' );
+
+               // Element containing notes that are visible to the audience
+               dom.speakerNotes = createSingletonNode( dom.wrapper, 'div', 
'speaker-notes', null );
+               dom.speakerNotes.setAttribute( 'data-prevent-swipe', '' );
+               dom.speakerNotes.setAttribute( 'tabindex', '0' );
+
+               // Overlay graphic which is displayed during the paused mode
+               dom.pauseOverlay = createSingletonNode( dom.wrapper, 'div', 
'pause-overlay', config.controls ? '<button class="resume-button">Resume 
presentation</button>' : null );
+
+               dom.wrapper.setAttribute( 'role', 'application' );
+
+               // There can be multiple instances of controls throughout the 
page
+               dom.controlsLeft = toArray( document.querySelectorAll( 
'.navigate-left' ) );
+               dom.controlsRight = toArray( document.querySelectorAll( 
'.navigate-right' ) );
+               dom.controlsUp = toArray( document.querySelectorAll( 
'.navigate-up' ) );
+               dom.controlsDown = toArray( document.querySelectorAll( 
'.navigate-down' ) );
+               dom.controlsPrev = toArray( document.querySelectorAll( 
'.navigate-prev' ) );
+               dom.controlsNext = toArray( document.querySelectorAll( 
'.navigate-next' ) );
+
+               // The right and down arrows in the standard reveal.js controls
+               dom.controlsRightArrow = dom.controls.querySelector( 
'.navigate-right' );
+               dom.controlsDownArrow = dom.controls.querySelector( 
'.navigate-down' );
+
+               dom.statusDiv = createStatusDiv();
+       }
+
+       /**
+        * Creates a hidden div with role aria-live to announce the
+        * current slide content. Hide the div off-screen to make it
+        * available only to Assistive Technologies.
+        *
+        * @return {HTMLElement}
+        */
+       function createStatusDiv() {
+
+               var statusDiv = document.getElementById( 'aria-status-div' );
+               if( !statusDiv ) {
+                       statusDiv = document.createElement( 'div' );
+                       statusDiv.style.position = 'absolute';
+                       statusDiv.style.height = '1px';
+                       statusDiv.style.width = '1px';
+                       statusDiv.style.overflow = 'hidden';
+                       statusDiv.style.clip = 'rect( 1px, 1px, 1px, 1px )';
+                       statusDiv.setAttribute( 'id', 'aria-status-div' );
+                       statusDiv.setAttribute( 'aria-live', 'polite' );
+                       statusDiv.setAttribute( 'aria-atomic','true' );
+                       dom.wrapper.appendChild( statusDiv );
+               }
+               return statusDiv;
+
+       }
+
+       /**
+        * Converts the given HTML element into a string of text
+        * that can be announced to a screen reader. Hidden
+        * elements are excluded.
+        */
+       function getStatusText( node ) {
+
+               var text = '';
+
+               // Text node
+               if( node.nodeType === 3 ) {
+                       text += node.textContent;
+               }
+               // Element node
+               else if( node.nodeType === 1 ) {
+
+                       var isAriaHidden = node.getAttribute( 'aria-hidden' );
+                       var isDisplayHidden = window.getComputedStyle( node 
)['display'] === 'none';
+                       if( isAriaHidden !== 'true' && !isDisplayHidden ) {
+
+                               toArray( node.childNodes ).forEach( function( 
child ) {
+                                       text += getStatusText( child );
+                               } );
+
+                       }
+
+               }
+
+               return text;
+
+       }
+
+       /**
+        * Configures the presentation for printing to a static
+        * PDF.
+        */
+       function setupPDF() {
+
+               var slideSize = getComputedSlideSize( window.innerWidth, 
window.innerHeight );
+
+               // Dimensions of the PDF pages
+               var pageWidth = Math.floor( slideSize.width * ( 1 + 
config.margin ) ),
+                       pageHeight = Math.floor( slideSize.height * ( 1 + 
config.margin ) );
+
+               // Dimensions of slides within the pages
+               var slideWidth = slideSize.width,
+                       slideHeight = slideSize.height;
+
+               // Let the browser know what page size we want to print
+               injectStyleSheet( '@page{size:'+ pageWidth +'px '+ pageHeight 
+'px; margin: 0px;}' );
+
+               // Limit the size of certain elements to the dimensions of the 
slide
+               injectStyleSheet( '.reveal section>img, .reveal section>video, 
.reveal section>iframe{max-width: '+ slideWidth +'px; max-height:'+ slideHeight 
+'px}' );
+
+               document.body.classList.add( 'print-pdf' );
+               document.body.style.width = pageWidth + 'px';
+               document.body.style.height = pageHeight + 'px';
+
+               // Make sure stretch elements fit on slide
+               layoutSlideContents( slideWidth, slideHeight );
+
+               // Add each slide's index as attributes on itself, we need these
+               // indices to generate slide numbers below
+               toArray( dom.wrapper.querySelectorAll( 
HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( hslide, h ) {
+                       hslide.setAttribute( 'data-index-h', h );
+
+                       if( hslide.classList.contains( 'stack' ) ) {
+                               toArray( hslide.querySelectorAll( 'section' ) 
).forEach( function( vslide, v ) {
+                                       vslide.setAttribute( 'data-index-h', h 
);
+                                       vslide.setAttribute( 'data-index-v', v 
);
+                               } );
+                       }
+               } );
+
+               // Slide and slide background layout
+               toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) 
).forEach( function( slide ) {
+
+                       // Vertical stacks are not centred since their section
+                       // children will be
+                       if( slide.classList.contains( 'stack' ) === false ) {
+                               // Center the slide inside of the page, giving 
the slide some margin
+                               var left = ( pageWidth - slideWidth ) / 2,
+                                       top = ( pageHeight - slideHeight ) / 2;
+
+                               var contentHeight = slide.scrollHeight;
+                               var numberOfPages = Math.max( Math.ceil( 
contentHeight / pageHeight ), 1 );
+
+                               // Adhere to configured pages per slide limit
+                               numberOfPages = Math.min( numberOfPages, 
config.pdfMaxPagesPerSlide );
+
+                               // Center slides vertically
+                               if( numberOfPages === 1 && config.center || 
slide.classList.contains( 'center' ) ) {
+                                       top = Math.max( ( pageHeight - 
contentHeight ) / 2, 0 );
+                               }
+
+                               // Wrap the slide in a page element and hide 
its overflow
+                               // so that no page ever flows onto another
+                               var page = document.createElement( 'div' );
+                               page.className = 'pdf-page';
+                               page.style.height = ( ( pageHeight + 
config.pdfPageHeightOffset ) * numberOfPages ) + 'px';
+                               slide.parentNode.insertBefore( page, slide );
+                               page.appendChild( slide );
+
+                               // Position the slide inside of the page
+                               slide.style.left = left + 'px';
+                               slide.style.top = top + 'px';
+                               slide.style.width = slideWidth + 'px';
+
+                               if( slide.slideBackgroundElement ) {
+                                       page.insertBefore( 
slide.slideBackgroundElement, slide );
+                               }
+
+                               // Inject notes if `showNotes` is enabled
+                               if( config.showNotes ) {
+
+                                       // Are there notes for this slide?
+                                       var notes = getSlideNotes( slide );
+                                       if( notes ) {
+
+                                               var notesSpacing = 8;
+                                               var notesLayout = typeof 
config.showNotes === 'string' ? config.showNotes : 'inline';
+                                               var notesElement = 
document.createElement( 'div' );
+                                               notesElement.classList.add( 
'speaker-notes' );
+                                               notesElement.classList.add( 
'speaker-notes-pdf' );
+                                               notesElement.setAttribute( 
'data-layout', notesLayout );
+                                               notesElement.innerHTML = notes;
+
+                                               if( notesLayout === 
'separate-page' ) {
+                                                       
page.parentNode.insertBefore( notesElement, page.nextSibling );
+                                               }
+                                               else {
+                                                       notesElement.style.left 
= notesSpacing + 'px';
+                                                       
notesElement.style.bottom = notesSpacing + 'px';
+                                                       
notesElement.style.width = ( pageWidth - notesSpacing*2 ) + 'px';
+                                                       page.appendChild( 
notesElement );
+                                               }
+
+                                       }
+
+                               }
+
+                               // Inject slide numbers if `slideNumbers` are 
enabled
+                               if( config.slideNumber && /all|print/i.test( 
config.showSlideNumber ) ) {
+                                       var slideNumberH = parseInt( 
slide.getAttribute( 'data-index-h' ), 10 ) + 1,
+                                               slideNumberV = parseInt( 
slide.getAttribute( 'data-index-v' ), 10 ) + 1;
+
+                                       var numberElement = 
document.createElement( 'div' );
+                                       numberElement.classList.add( 
'slide-number' );
+                                       numberElement.classList.add( 
'slide-number-pdf' );
+                                       numberElement.innerHTML = 
formatSlideNumber( slideNumberH, '.', slideNumberV );
+                                       page.appendChild( numberElement );
+                               }
+
+                               // Copy page and show fragments one after 
another
+                               if( config.pdfSeparateFragments ) {
+
+                                       // Each fragment 'group' is an array 
containing one or more
+                                       // fragments. Multiple fragments that 
appear at the same time
+                                       // are part of the same group.
+                                       var fragmentGroups = sortFragments( 
page.querySelectorAll( '.fragment' ), true );
+
+                                       var previousFragmentStep;
+                                       var previousPage;
+
+                                       fragmentGroups.forEach( function( 
fragments ) {
+
+                                               // Remove 'current-fragment' 
from the previous group
+                                               if( previousFragmentStep ) {
+                                                       
previousFragmentStep.forEach( function( fragment ) {
+                                                               
fragment.classList.remove( 'current-fragment' );
+                                                       } );
+                                               }
+
+                                               // Show the fragments for the 
current index
+                                               fragments.forEach( function( 
fragment ) {
+                                                       fragment.classList.add( 
'visible', 'current-fragment' );
+                                               } );
+
+                                               // Create a separate page for 
the current fragment state
+                                               var clonedPage = 
page.cloneNode( true );
+                                               page.parentNode.insertBefore( 
clonedPage, ( previousPage || page ).nextSibling );
+
+                                               previousFragmentStep = 
fragments;
+                                               previousPage = clonedPage;
+
+                                       } );
+
+                                       // Reset the first/original page so 
that all fragments are hidden
+                                       fragmentGroups.forEach( function( 
fragments ) {
+                                               fragments.forEach( function( 
fragment ) {
+                                                       
fragment.classList.remove( 'visible', 'current-fragment' );
+                                               } );
+                                       } );
+
+                               }
+                               // Show all fragments
+                               else {
+                                       toArray( page.querySelectorAll( 
'.fragment:not(.fade-out)' ) ).forEach( function( fragment ) {
+                                               fragment.classList.add( 
'visible' );
+                                       } );
+                               }
+
+                       }
+
+               } );
+
+               // Notify subscribers that the PDF layout is good to go
+               dispatchEvent( 'pdf-ready' );
+
+       }
+
+       /**
+        * This is an unfortunate necessity. Some actions – such as
+        * an input field being focused in an iframe or using the
+        * keyboard to expand text selection beyond the bounds of
+        * a slide – can trigger our content to be pushed out of view.
+        * This scrolling can not be prevented by hiding overflow in
+        * CSS (we already do) so we have to resort to repeatedly
+        * checking if the slides have been offset :(
+        */
+       function setupScrollPrevention() {
+
+               setInterval( function() {
+                       if( dom.wrapper.scrollTop !== 0 || 
dom.wrapper.scrollLeft !== 0 ) {
+                               dom.wrapper.scrollTop = 0;
+                               dom.wrapper.scrollLeft = 0;
+                       }
+               }, 1000 );
+
+       }
+
+       /**
+        * Creates an HTML element and returns a reference to it.
+        * If the element already exists the existing instance will
+        * be returned.
+        *
+        * @param {HTMLElement} container
+        * @param {string} tagname
+        * @param {string} classname
+        * @param {string} innerHTML
+        *
+        * @return {HTMLElement}
+        */
+       function createSingletonNode( container, tagname, classname, innerHTML 
) {
+
+               // Find all nodes matching the description
+               var nodes = container.querySelectorAll( '.' + classname );
+
+               // Check all matches to find one which is a direct child of
+               // the specified container
+               for( var i = 0; i < nodes.length; i++ ) {
+                       var testNode = nodes[i];
+                       if( testNode.parentNode === container ) {
+                               return testNode;
+                       }
+               }
+
+               // If no node was found, create it now
+               var node = document.createElement( tagname );
+               node.className = classname;
+               if( typeof innerHTML === 'string' ) {
+                       node.innerHTML = innerHTML;
+               }
+               container.appendChild( node );
+
+               return node;
+
+       }
+
+       /**
+        * Creates the slide background elements and appends them
+        * to the background container. One element is created per
+        * slide no matter if the given slide has visible background.
+        */
+       function createBackgrounds() {
+
+               var printMode = isPrintingPDF();
+
+               // Clear prior backgrounds
+               dom.background.innerHTML = '';
+               dom.background.classList.add( 'no-transition' );
+
+               // Iterate over all horizontal slides
+               toArray( dom.wrapper.querySelectorAll( 
HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( slideh ) {
+
+                       var backgroundStack = createBackground( slideh, 
dom.background );
+
+                       // Iterate over all vertical slides
+                       toArray( slideh.querySelectorAll( 'section' ) 
).forEach( function( slidev ) {
+
+                               createBackground( slidev, backgroundStack );
+
+                               backgroundStack.classList.add( 'stack' );
+
+                       } );
+
+               } );
+
+               // Add parallax background if specified
+               if( config.parallaxBackgroundImage ) {
+
+                       dom.background.style.backgroundImage = 'url("' + 
config.parallaxBackgroundImage + '")';
+                       dom.background.style.backgroundSize = 
config.parallaxBackgroundSize;
+                       dom.background.style.backgroundRepeat = 
config.parallaxBackgroundRepeat;
+                       dom.background.style.backgroundPosition = 
config.parallaxBackgroundPosition;
+
+                       // Make sure the below properties are set on the 
element - these properties are
+                       // needed for proper transitions to be set on the 
element via CSS. To remove
+                       // annoying background slide-in effect when the 
presentation starts, apply
+                       // these properties after short time delay
+                       setTimeout( function() {
+                               dom.wrapper.classList.add( 
'has-parallax-background' );
+                       }, 1 );
+
+               }
+               else {
+
+                       dom.background.style.backgroundImage = '';
+                       dom.wrapper.classList.remove( 'has-parallax-background' 
);
+
+               }
+
+       }
+
+       /**
+        * Creates a background for the given slide.
+        *
+        * @param {HTMLElement} slide
+        * @param {HTMLElement} container The element that the background
+        * should be appended to
+        * @return {HTMLElement} New background div
+        */
+       function createBackground( slide, container ) {
+
+
+               // Main slide background element
+               var element = document.createElement( 'div' );
+               element.className = 'slide-background ' + 
slide.className.replace( /present|past|future/, '' );
+
+               // Inner background element that wraps images/videos/iframes
+               var contentElement = document.createElement( 'div' );
+               contentElement.className = 'slide-background-content';
+
+               element.appendChild( contentElement );
+               container.appendChild( element );
+
+               slide.slideBackgroundElement = element;
+               slide.slideBackgroundContentElement = contentElement;
+
+               // Syncs the background to reflect all current background 
settings
+               syncBackground( slide );
+
+               return element;
+
+       }
+
+       /**
+        * Renders all of the visual properties of a slide background
+        * based on the various background attributes.
+        *
+        * @param {HTMLElement} slide
+        */
+       function syncBackground( slide ) {
+
+               var element = slide.slideBackgroundElement,
+                       contentElement = slide.slideBackgroundContentElement;
+
+               // Reset the prior background state in case this is not the
+               // initial sync
+               slide.classList.remove( 'has-dark-background' );
+               slide.classList.remove( 'has-light-background' );
+
+               element.removeAttribute( 'data-loaded' );
+               element.removeAttribute( 'data-background-hash' );
+               element.removeAttribute( 'data-background-size' );
+               element.removeAttribute( 'data-background-transition' );
+               element.style.backgroundColor = '';
+
+               contentElement.style.backgroundSize = '';
+               contentElement.style.backgroundRepeat = '';
+               contentElement.style.backgroundPosition = '';
+               contentElement.style.backgroundImage = '';
+               contentElement.style.opacity = '';
+               contentElement.innerHTML = '';
+
+               var data = {
+                       background: slide.getAttribute( 'data-background' ),
+                       backgroundSize: slide.getAttribute( 
'data-background-size' ),
+                       backgroundImage: slide.getAttribute( 
'data-background-image' ),
+                       backgroundVideo: slide.getAttribute( 
'data-background-video' ),
+                       backgroundIframe: slide.getAttribute( 
'data-background-iframe' ),
+                       backgroundColor: slide.getAttribute( 
'data-background-color' ),
+                       backgroundRepeat: slide.getAttribute( 
'data-background-repeat' ),
+                       backgroundPosition: slide.getAttribute( 
'data-background-position' ),
+                       backgroundTransition: slide.getAttribute( 
'data-background-transition' ),
+                       backgroundOpacity: slide.getAttribute( 
'data-background-opacity' )
+               };
+
+               if( data.background ) {
+                       // Auto-wrap image urls in url(...)
+                       if( /^(http|file|\/\/)/gi.test( data.background ) || 
/\.(svg|png|jpg|jpeg|gif|bmp)([?#\s]|$)/gi.test( data.background ) ) {
+                               slide.setAttribute( 'data-background-image', 
data.background );
+                       }
+                       else {
+                               element.style.background = data.background;
+                       }
+               }
+
+               // Create a hash for this combination of background settings.
+               // This is used to determine when two slide backgrounds are
+               // the same.
+               if( data.background || data.backgroundColor || 
data.backgroundImage || data.backgroundVideo || data.backgroundIframe ) {
+                       element.setAttribute( 'data-background-hash', 
data.background +
+                                                                               
                                        data.backgroundSize +
+                                                                               
                                        data.backgroundImage +
+                                                                               
                                        data.backgroundVideo +
+                                                                               
                                        data.backgroundIframe +
+                                                                               
                                        data.backgroundColor +
+                                                                               
                                        data.backgroundRepeat +
+                                                                               
                                        data.backgroundPosition +
+                                                                               
                                        data.backgroundTransition +
+                                                                               
                                        data.backgroundOpacity );
+               }
+
+               // Additional and optional background properties
+               if( data.backgroundSize ) element.setAttribute( 
'data-background-size', data.backgroundSize );
+               if( data.backgroundColor ) element.style.backgroundColor = 
data.backgroundColor;
+               if( data.backgroundTransition ) element.setAttribute( 
'data-background-transition', data.backgroundTransition );
+
+               // Background image options are set on the content wrapper
+               if( data.backgroundSize ) contentElement.style.backgroundSize = 
data.backgroundSize;
+               if( data.backgroundRepeat ) 
contentElement.style.backgroundRepeat = data.backgroundRepeat;
+               if( data.backgroundPosition ) 
contentElement.style.backgroundPosition = data.backgroundPosition;
+               if( data.backgroundOpacity ) contentElement.style.opacity = 
data.backgroundOpacity;
+
+               // If this slide has a background color, we add a class that
+               // signals if it is light or dark. If the slide has no 
background
+               // color, no class will be added
+               var contrastColor = data.backgroundColor;
+
+               // If no bg color was found, check the computed background
+               if( !contrastColor ) {
+                       var computedBackgroundStyle = window.getComputedStyle( 
element );
+                       if( computedBackgroundStyle && 
computedBackgroundStyle.backgroundColor ) {
+                               contrastColor = 
computedBackgroundStyle.backgroundColor;
+                       }
+               }
+
+               if( contrastColor ) {
+                       var rgb = colorToRgb( contrastColor );
+
+                       // Ignore fully transparent backgrounds. Some browsers 
return
+                       // rgba(0,0,0,0) when reading the computed background 
color of
+                       // an element with no background
+                       if( rgb && rgb.a !== 0 ) {
+                               if( colorBrightness( contrastColor ) < 128 ) {
+                                       slide.classList.add( 
'has-dark-background' );
+                               }
+                               else {
+                                       slide.classList.add( 
'has-light-background' );
+                               }
+                       }
+               }
+
+       }
+
+       /**
+        * Registers a listener to postMessage events, this makes it
+        * possible to call all reveal.js API methods from another
+        * window. For example:
+        *
+        * revealWindow.postMessage( JSON.stringify({
+        *   method: 'slide',
+        *   args: [ 2 ]
+        * }), '*' );
+        */
+       function setupPostMessage() {
+
+               if( config.postMessage ) {
+                       window.addEventListener( 'message', function ( event ) {
+                               var data = event.data;
+
+                               // Make sure we're dealing with JSON
+                               if( typeof data === 'string' && data.charAt( 0 
) === '{' && data.charAt( data.length - 1 ) === '}' ) {
+                                       data = JSON.parse( data );
+
+                                       // Check if the requested method can be 
found
+                                       if( data.method && typeof 
Reveal[data.method] === 'function' ) {
+                                               Reveal[data.method].apply( 
Reveal, data.args );
+                                       }
+                               }
+                       }, false );
+               }
+
+       }
+
+       /**
+        * Applies the configuration settings from the config
+        * object. May be called multiple times.
+        *
+        * @param {object} options
+        */
+       function configure( options ) {
+
+               var oldTransition = config.transition;
+
+               // New config options may be passed when this method
+               // is invoked through the API after initialization
+               if( typeof options === 'object' ) extend( config, options );
+
+               // Abort if reveal.js hasn't finished loading, config
+               // changes will be applied automatically once loading
+               // finishes
+               if( loaded === false ) return;
+
+               var numberOfSlides = dom.wrapper.querySelectorAll( 
SLIDES_SELECTOR ).length;
+
+               // Remove the previously configured transition class
+               dom.wrapper.classList.remove( oldTransition );
+
+               // Force linear transition based on browser capabilities
+               if( features.transforms3d === false ) config.transition = 
'linear';
+
+               dom.wrapper.classList.add( config.transition );
+
+               dom.wrapper.setAttribute( 'data-transition-speed', 
config.transitionSpeed );
+               dom.wrapper.setAttribute( 'data-background-transition', 
config.backgroundTransition );
+
+               dom.controls.style.display = config.controls ? 'block' : 'none';
+               dom.progress.style.display = config.progress ? 'block' : 'none';
+
+               dom.controls.setAttribute( 'data-controls-layout', 
config.controlsLayout );
+               dom.controls.setAttribute( 'data-controls-back-arrows', 
config.controlsBackArrows );
+
+               if( config.shuffle ) {
+                       shuffle();
+               }
+
+               if( config.rtl ) {
+                       dom.wrapper.classList.add( 'rtl' );
+               }
+               else {
+                       dom.wrapper.classList.remove( 'rtl' );
+               }
+
+               if( config.center ) {
+                       dom.wrapper.classList.add( 'center' );
+               }
+               else {
+                       dom.wrapper.classList.remove( 'center' );
+               }
+
+               // Exit the paused mode if it was configured off
+               if( config.pause === false ) {
+                       resume();
+               }
+
+               if( config.showNotes ) {
+                       dom.speakerNotes.setAttribute( 'data-layout', typeof 
config.showNotes === 'string' ? config.showNotes : 'inline' );
+               }
+
+               if( config.mouseWheel ) {
+                       document.addEventListener( 'DOMMouseScroll', 
onDocumentMouseScroll, false ); // FF
+                       document.addEventListener( 'mousewheel', 
onDocumentMouseScroll, false );
+               }
+               else {
+                       document.removeEventListener( 'DOMMouseScroll', 
onDocumentMouseScroll, false ); // FF
+                       document.removeEventListener( 'mousewheel', 
onDocumentMouseScroll, false );
+               }
+
+               // Rolling 3D links
+               if( config.rollingLinks ) {
+                       enableRollingLinks();
+               }
+               else {
+                       disableRollingLinks();
+               }
+
+               // Auto-hide the mouse pointer when its inactive
+               if( config.hideInactiveCursor ) {
+                       document.addEventListener( 'mousemove', 
onDocumentCursorActive, false );
+                       document.addEventListener( 'mousedown', 
onDocumentCursorActive, false );
+               }
+               else {
+                       showCursor();
+
+                       document.removeEventListener( 'mousemove', 
onDocumentCursorActive, false );
+                       document.removeEventListener( 'mousedown', 
onDocumentCursorActive, false );
+               }
+
+               // Iframe link previews
+               if( config.previewLinks ) {
+                       enablePreviewLinks();
+                       disablePreviewLinks( '[data-preview-link=false]' );
+               }
+               else {
+                       disablePreviewLinks();
+                       enablePreviewLinks( 
'[data-preview-link]:not([data-preview-link=false])' );
+               }
+
+               // Remove existing auto-slide controls
+               if( autoSlidePlayer ) {
+                       autoSlidePlayer.destroy();
+                       autoSlidePlayer = null;
+               }
+
+               // Generate auto-slide controls if needed
+               if( numberOfSlides > 1 && config.autoSlide && 
config.autoSlideStoppable && features.canvas && features.requestAnimationFrame 
) {
+                       autoSlidePlayer = new Playback( dom.wrapper, function() 
{
+                               return Math.min( Math.max( ( Date.now() - 
autoSlideStartTime ) / autoSlide, 0 ), 1 );
+                       } );
+
+                       autoSlidePlayer.on( 'click', onAutoSlidePlayerClick );
+                       autoSlidePaused = false;
+               }
+
+               // When fragments are turned off they should be visible
+               if( config.fragments === false ) {
+                       toArray( dom.slides.querySelectorAll( '.fragment' ) 
).forEach( function( element ) {
+                               element.classList.add( 'visible' );
+                               element.classList.remove( 'current-fragment' );
+                       } );
+               }
+
+               // Slide numbers
+               var slideNumberDisplay = 'none';
+               if( config.slideNumber && !isPrintingPDF() ) {
+                       if( config.showSlideNumber === 'all' ) {
+                               slideNumberDisplay = 'block';
+                       }
+                       else if( config.showSlideNumber === 'speaker' && 
isSpeakerNotes() ) {
+                               slideNumberDisplay = 'block';
+                       }
+               }
+
+               dom.slideNumber.style.display = slideNumberDisplay;
+
+               // Add the navigation mode to the DOM so we can adjust styling
+               if( config.navigationMode !== 'default' ) {
+                       dom.wrapper.setAttribute( 'data-navigation-mode', 
config.navigationMode );
+               }
+               else {
+                       dom.wrapper.removeAttribute( 'data-navigation-mode' );
+               }
+
+               // Define our contextual list of keyboard shortcuts
+               if( config.navigationMode === 'linear' ) {
+                       keyboardShortcuts['&#8594;  ,  &#8595;  ,  SPACE  ,  N  
,  L  ,  J'] = 'Next slide';
+                       keyboardShortcuts['&#8592;  ,  &#8593;  ,  P  ,  H  ,  
K']           = 'Previous slide';
+               }
+               else {
+                       keyboardShortcuts['N  ,  SPACE']   = 'Next slide';
+                       keyboardShortcuts['P']             = 'Previous slide';
+                       keyboardShortcuts['&#8592;  ,  H'] = 'Navigate left';
+                       keyboardShortcuts['&#8594;  ,  L'] = 'Navigate right';
+                       keyboardShortcuts['&#8593;  ,  K'] = 'Navigate up';
+                       keyboardShortcuts['&#8595;  ,  J'] = 'Navigate down';
+               }
+
+               keyboardShortcuts['Home  ,  &#8984;/CTRL &#8592;'] = 'First 
slide';
+               keyboardShortcuts['End  ,  &#8984;/CTRL &#8594;']  = 'Last 
slide';
+               keyboardShortcuts['B  ,  .']                       = 'Pause';
+               keyboardShortcuts['F']                             = 
'Fullscreen';
+               keyboardShortcuts['ESC, O']                        = 'Slide 
overview';
+
+               sync();
+
+       }
+
+       /**
+        * Binds all event listeners.
+        */
+       function addEventListeners() {
+
+               eventsAreBound = true;
+
+               window.addEventListener( 'hashchange', onWindowHashChange, 
false );
+               window.addEventListener( 'resize', onWindowResize, false );
+
+               if( config.touch ) {
+                       if( 'onpointerdown' in window ) {
+                               // Use W3C pointer events
+                               dom.wrapper.addEventListener( 'pointerdown', 
onPointerDown, false );
+                               dom.wrapper.addEventListener( 'pointermove', 
onPointerMove, false );
+                               dom.wrapper.addEventListener( 'pointerup', 
onPointerUp, false );
+                       }
+                       else if( window.navigator.msPointerEnabled ) {
+                               // IE 10 uses prefixed version of pointer events
+                               dom.wrapper.addEventListener( 'MSPointerDown', 
onPointerDown, false );
+                               dom.wrapper.addEventListener( 'MSPointerMove', 
onPointerMove, false );
+                               dom.wrapper.addEventListener( 'MSPointerUp', 
onPointerUp, false );
+                       }
+                       else {
+                               // Fall back to touch events
+                               dom.wrapper.addEventListener( 'touchstart', 
onTouchStart, false );
+                               dom.wrapper.addEventListener( 'touchmove', 
onTouchMove, false );
+                               dom.wrapper.addEventListener( 'touchend', 
onTouchEnd, false );
+                       }
+               }
+
+               if( config.keyboard ) {
+                       document.addEventListener( 'keydown', 
onDocumentKeyDown, false );
+                       document.addEventListener( 'keypress', 
onDocumentKeyPress, false );
+               }
+
+               if( config.progress && dom.progress ) {
+                       dom.progress.addEventListener( 'click', 
onProgressClicked, false );
+               }
+
+               dom.pauseOverlay.addEventListener( 'click', resume, false );
+
+               if( config.focusBodyOnPageVisibilityChange ) {
+                       var visibilityChange;
+
+                       if( 'hidden' in document ) {
+                               visibilityChange = 'visibilitychange';
+                       }
+                       else if( 'msHidden' in document ) {
+                               visibilityChange = 'msvisibilitychange';
+                       }
+                       else if( 'webkitHidden' in document ) {
+                               visibilityChange = 'webkitvisibilitychange';
+                       }
+
+                       if( visibilityChange ) {
+                               document.addEventListener( visibilityChange, 
onPageVisibilityChange, false );
+                       }
+               }
+
+               // Listen to both touch and click events, in case the device
+               // supports both
+               var pointerEvents = [ 'touchstart', 'click' ];
+
+               // Only support touch for Android, fixes double navigations in
+               // stock browser
+               if( UA.match( /android/gi ) ) {
+                       pointerEvents = [ 'touchstart' ];
+               }
+
+               pointerEvents.forEach( function( eventName ) {
+                       dom.controlsLeft.forEach( function( el ) { 
el.addEventListener( eventName, onNavigateLeftClicked, false ); } );
+                       dom.controlsRight.forEach( function( el ) { 
el.addEventListener( eventName, onNavigateRightClicked, false ); } );
+                       dom.controlsUp.forEach( function( el ) { 
el.addEventListener( eventName, onNavigateUpClicked, false ); } );
+                       dom.controlsDown.forEach( function( el ) { 
el.addEventListener( eventName, onNavigateDownClicked, false ); } );
+                       dom.controlsPrev.forEach( function( el ) { 
el.addEventListener( eventName, onNavigatePrevClicked, false ); } );
+                       dom.controlsNext.forEach( function( el ) { 
el.addEventListener( eventName, onNavigateNextClicked, false ); } );
+               } );
+
+       }
+
+       /**
+        * Unbinds all event listeners.
+        */
+       function removeEventListeners() {
+
+               eventsAreBound = false;
+
+               document.removeEventListener( 'keydown', onDocumentKeyDown, 
false );
+               document.removeEventListener( 'keypress', onDocumentKeyPress, 
false );
+               window.removeEventListener( 'hashchange', onWindowHashChange, 
false );
+               window.removeEventListener( 'resize', onWindowResize, false );
+
+               dom.wrapper.removeEventListener( 'pointerdown', onPointerDown, 
false );
+               dom.wrapper.removeEventListener( 'pointermove', onPointerMove, 
false );
+               dom.wrapper.removeEventListener( 'pointerup', onPointerUp, 
false );
+
+               dom.wrapper.removeEventListener( 'MSPointerDown', 
onPointerDown, false );
+               dom.wrapper.removeEventListener( 'MSPointerMove', 
onPointerMove, false );
+               dom.wrapper.removeEventListener( 'MSPointerUp', onPointerUp, 
false );
+
+               dom.wrapper.removeEventListener( 'touchstart', onTouchStart, 
false );
+               dom.wrapper.removeEventListener( 'touchmove', onTouchMove, 
false );
+               dom.wrapper.removeEventListener( 'touchend', onTouchEnd, false 
);
+
+               dom.pauseOverlay.removeEventListener( 'click', resume, false );
+
+               if ( config.progress && dom.progress ) {
+                       dom.progress.removeEventListener( 'click', 
onProgressClicked, false );
+               }
+
+               [ 'touchstart', 'click' ].forEach( function( eventName ) {
+                       dom.controlsLeft.forEach( function( el ) { 
el.removeEventListener( eventName, onNavigateLeftClicked, false ); } );
+                       dom.controlsRight.forEach( function( el ) { 
el.removeEventListener( eventName, onNavigateRightClicked, false ); } );
+                       dom.controlsUp.forEach( function( el ) { 
el.removeEventListener( eventName, onNavigateUpClicked, false ); } );
+                       dom.controlsDown.forEach( function( el ) { 
el.removeEventListener( eventName, onNavigateDownClicked, false ); } );
+                       dom.controlsPrev.forEach( function( el ) { 
el.removeEventListener( eventName, onNavigatePrevClicked, false ); } );
+                       dom.controlsNext.forEach( function( el ) { 
el.removeEventListener( eventName, onNavigateNextClicked, false ); } );
+               } );
+
+       }
+
+       /**
+        * Registers a new plugin with this reveal.js instance.
+        *
+        * reveal.js waits for all regisered plugins to initialize
+        * before considering itself ready, as long as the plugin
+        * is registered before calling `Reveal.initialize()`.
+        */
+       function registerPlugin( id, plugin ) {
+
+               if( plugins[id] === undefined ) {
+                       plugins[id] = plugin;
+
+                       // If a plugin is registered after reveal.js is loaded,
+                       // initialize it right away
+                       if( loaded && typeof plugin.init === 'function' ) {
+                               plugin.init();
+                       }
+               }
+               else {
+                       console.warn( 'reveal.js: "'+ id +'" plugin has already 
been registered' );
+               }
+
+       }
+
+       /**
+        * Checks if a specific plugin has been registered.
+        *
+        * @param {String} id Unique plugin identifier
+        */
+       function hasPlugin( id ) {
+
+               return !!plugins[id];
+
+       }
+
+       /**
+        * Returns the specific plugin instance, if a plugin
+        * with the given ID has been registered.
+        *
+        * @param {String} id Unique plugin identifier
+        */
+       function getPlugin( id ) {
+
+               return plugins[id];
+
+       }
+
+       /**
+        * Add a custom key binding with optional description to
+        * be added to the help screen.
+        */
+       function addKeyBinding( binding, callback ) {
+
+               if( typeof binding === 'object' && binding.keyCode ) {
+                       registeredKeyBindings[binding.keyCode] = {
+                               callback: callback,
+                               key: binding.key,
+                               description: binding.description
+                       };
+               }
+               else {
+                       registeredKeyBindings[binding] = {
+                               callback: callback,
+                               key: null,
+                               description: null
+                       };
+               }
+
+       }
+
+       /**
+        * Removes the specified custom key binding.
+        */
+       function removeKeyBinding( keyCode ) {
+
+               delete registeredKeyBindings[keyCode];
+
+       }
+
+       /**
+        * Extend object a with the properties of object b.
+        * If there's a conflict, object b takes precedence.
+        *
+        * @param {object} a
+        * @param {object} b
+        */
+       function extend( a, b ) {
+
+               for( var i in b ) {
+                       a[ i ] = b[ i ];
+               }
+
+               return a;
+
+       }
+
+       /**
+        * Converts the target object to an array.
+        *
+        * @param {object} o
+        * @return {object[]}
+        */
+       function toArray( o ) {
+
+               return Array.prototype.slice.call( o );
+
+       }
+
+       /**
+        * Utility for deserializing a value.
+        *
+        * @param {*} value
+        * @return {*}
+        */
+       function deserialize( value ) {
+
+               if( typeof value === 'string' ) {
+                       if( value === 'null' ) return null;
+                       else if( value === 'true' ) return true;
+                       else if( value === 'false' ) return false;
+                       else if( value.match( /^-?[\d\.]+$/ ) ) return 
parseFloat( value );
+               }
+
+               return value;
+
+       }
+
+       /**
+        * Measures the distance in pixels between point a
+        * and point b.
+        *
+        * @param {object} a point with x/y properties
+        * @param {object} b point with x/y properties
+        *
+        * @return {number}
+        */
+       function distanceBetween( a, b ) {
+
+               var dx = a.x - b.x,
+                       dy = a.y - b.y;
+
+               return Math.sqrt( dx*dx + dy*dy );
+
+       }
+
+       /**
+        * Applies a CSS transform to the target element.
+        *
+        * @param {HTMLElement} element
+        * @param {string} transform
+        */
+       function transformElement( element, transform ) {
+
+               element.style.WebkitTransform = transform;
+               element.style.MozTransform = transform;
+               element.style.msTransform = transform;
+               element.style.transform = transform;
+
+       }
+
+       /**
+        * Applies CSS transforms to the slides container. The container
+        * is transformed from two separate sources: layout and the overview
+        * mode.
+        *
+        * @param {object} transforms
+        */
+       function transformSlides( transforms ) {
+
+               // Pick up new transforms from arguments
+               if( typeof transforms.layout === 'string' ) 
slidesTransform.layout = transforms.layout;
+               if( typeof transforms.overview === 'string' ) 
slidesTransform.overview = transforms.overview;
+
+               // Apply the transforms to the slides container
+               if( slidesTransform.layout ) {
+                       transformElement( dom.slides, slidesTransform.layout + 
' ' + slidesTransform.overview );
+               }
+               else {
+                       transformElement( dom.slides, slidesTransform.overview 
);
+               }
+
+       }
+
+       /**
+        * Injects the given CSS styles into the DOM.
+        *
+        * @param {string} value
+        */
+       function injectStyleSheet( value ) {
+
+               var tag = document.createElement( 'style' );
+               tag.type = 'text/css';
+               if( tag.styleSheet ) {
+                       tag.styleSheet.cssText = value;
+               }
+               else {
+                       tag.appendChild( document.createTextNode( value ) );
+               }
+               document.getElementsByTagName( 'head' )[0].appendChild( tag );
+
+       }
+
+       /**
+        * Find the closest parent that matches the given
+        * selector.
+        *
+        * @param {HTMLElement} target The child element
+        * @param {String} selector The CSS selector to match
+        * the parents against
+        *
+        * @return {HTMLElement} The matched parent or null
+        * if no matching parent was found
+        */
+       function closestParent( target, selector ) {
+
+               var parent = target.parentNode;
+
+               while( parent ) {
+
+                       // There's some overhead doing this each time, we don't
+                       // want to rewrite the element prototype but should 
still
+                       // be enough to feature detect once at startup...
+                       var matchesMethod = parent.matches || 
parent.matchesSelector || parent.msMatchesSelector;
+
+                       // If we find a match, we're all set
+                       if( matchesMethod && matchesMethod.call( parent, 
selector ) ) {
+                               return parent;
+                       }
+
+                       // Keep searching
+                       parent = parent.parentNode;
+
+               }
+
+               return null;
+
+       }
+
+       /**
+        * Converts various color input formats to an {r:0,g:0,b:0} object.
+        *
+        * @param {string} color The string representation of a color
+        * @example
+        * colorToRgb('#000');
+        * @example
+        * colorToRgb('#000000');
+        * @example
+        * colorToRgb('rgb(0,0,0)');
+        * @example
+        * colorToRgb('rgba(0,0,0)');
+        *
+        * @return {{r: number, g: number, b: number, [a]: number}|null}
+        */
+       function colorToRgb( color ) {
+
+               var hex3 = color.match( /^#([0-9a-f]{3})$/i );
+               if( hex3 && hex3[1] ) {
+                       hex3 = hex3[1];
+                       return {
+                               r: parseInt( hex3.charAt( 0 ), 16 ) * 0x11,
+                               g: parseInt( hex3.charAt( 1 ), 16 ) * 0x11,
+                               b: parseInt( hex3.charAt( 2 ), 16 ) * 0x11
+                       };
+               }
+
+               var hex6 = color.match( /^#([0-9a-f]{6})$/i );
+               if( hex6 && hex6[1] ) {
+                       hex6 = hex6[1];
+                       return {
+                               r: parseInt( hex6.substr( 0, 2 ), 16 ),
+                               g: parseInt( hex6.substr( 2, 2 ), 16 ),
+                               b: parseInt( hex6.substr( 4, 2 ), 16 )
+                       };
+               }
+
+               var rgb = color.match( 
/^rgb\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\)$/i );
+               if( rgb ) {
+                       return {
+                               r: parseInt( rgb[1], 10 ),
+                               g: parseInt( rgb[2], 10 ),
+                               b: parseInt( rgb[3], 10 )
+                       };
+               }
+
+               var rgba = color.match( 
/^rgba\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\,\s*([\d]+|[\d]*.[\d]+)\s*\)$/i 
);
+               if( rgba ) {
+                       return {
+                               r: parseInt( rgba[1], 10 ),
+                               g: parseInt( rgba[2], 10 ),
+                               b: parseInt( rgba[3], 10 ),
+                               a: parseFloat( rgba[4] )
+                       };
+               }
+
+               return null;
+
+       }
+
+       /**
+        * Calculates brightness on a scale of 0-255.
+        *
+        * @param {string} color See colorToRgb for supported formats.
+        * @see {@link colorToRgb}
+        */
+       function colorBrightness( color ) {
+
+               if( typeof color === 'string' ) color = colorToRgb( color );
+
+               if( color ) {
+                       return ( color.r * 299 + color.g * 587 + color.b * 114 
) / 1000;
+               }
+
+               return null;
+
+       }
+
+       /**
+        * Returns the remaining height within the parent of the
+        * target element.
+        *
+        * remaining height = [ configured parent height ] - [ current parent 
height ]
+        *
+        * @param {HTMLElement} element
+        * @param {number} [height]
+        */
+       function getRemainingHeight( element, height ) {
+
+               height = height || 0;
+
+               if( element ) {
+                       var newHeight, oldHeight = element.style.height;
+
+                       // Change the .stretch element height to 0 in order 
find the height of all
+                       // the other elements
+                       element.style.height = '0px';
+
+                       // In Overview mode, the parent (.slide) height is set 
of 700px.
+                       // Restore it temporarily to its natural height.
+                       element.parentNode.style.height = 'auto';
+
+                       newHeight = height - element.parentNode.offsetHeight;
+
+                       // Restore the old height, just in case
+                       element.style.height = oldHeight + 'px';
+
+                       // Clear the parent (.slide) height. .removeProperty 
works in IE9+
+                       element.parentNode.style.removeProperty('height');
+
+                       return newHeight;
+               }
+
+               return height;
+
+       }
+
+       /**
+        * Checks if this instance is being used to print a PDF.
+        */
+       function isPrintingPDF() {
+
+               return ( /print-pdf/gi ).test( window.location.search );
+
+       }
+
+       /**
+        * Hides the address bar if we're on a mobile device.
+        */
+       function hideAddressBar() {
+
+               if( config.hideAddressBar && isMobileDevice ) {
+                       // Events that should trigger the address bar to hide
+                       window.addEventListener( 'load', removeAddressBar, 
false );
+                       window.addEventListener( 'orientationchange', 
removeAddressBar, false );
+               }
+
+       }
+
+       /**
+        * Causes the address bar to hide on mobile devices,
+        * more vertical space ftw.
+        */
+       function removeAddressBar() {
+
+               setTimeout( function() {
+                       window.scrollTo( 0, 1 );
+               }, 10 );
+
+       }
+
+       /**
+        * Dispatches an event of the specified type from the
+        * reveal DOM element.
+        */
+       function dispatchEvent( type, args ) {
+
+               var event = document.createEvent( 'HTMLEvents', 1, 2 );
+               event.initEvent( type, true, true );
+               extend( event, args );
+               dom.wrapper.dispatchEvent( event );
+
+               // If we're in an iframe, post each reveal.js event to the
+               // parent window. Used by the notes plugin
+               if( config.postMessageEvents && window.parent !== window.self ) 
{
+                       window.parent.postMessage( JSON.stringify({ namespace: 
'reveal', eventName: type, state: getState() }), '*' );
+               }
+
+       }
+
+       /**
+        * Wrap all links in 3D goodness.
+        */
+       function enableRollingLinks() {
+
+               if( features.transforms3d && !( 'msPerspective' in 
document.body.style ) ) {
+                       var anchors = dom.wrapper.querySelectorAll( 
SLIDES_SELECTOR + ' a' );
+
+                       for( var i = 0, len = anchors.length; i < len; i++ ) {
+                               var anchor = anchors[i];
+
+                               if( anchor.textContent && 
!anchor.querySelector( '*' ) && ( !anchor.className || 
!anchor.classList.contains( anchor, 'roll' ) ) ) {
+                                       var span = 
document.createElement('span');
+                                       span.setAttribute('data-title', 
anchor.text);
+                                       span.innerHTML = anchor.innerHTML;
+
+                                       anchor.classList.add( 'roll' );
+                                       anchor.innerHTML = '';
+                                       anchor.appendChild(span);
+                               }
+                       }
+               }
+
+       }
+
+       /**
+        * Unwrap all 3D links.
+        */
+       function disableRollingLinks() {
+
+               var anchors = dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' 
a.roll' );
+
+               for( var i = 0, len = anchors.length; i < len; i++ ) {
+                       var anchor = anchors[i];
+                       var span = anchor.querySelector( 'span' );
+
+                       if( span ) {
+                               anchor.classList.remove( 'roll' );
+                               anchor.innerHTML = span.innerHTML;
+                       }
+               }
+
+       }
+
+       /**
+        * Bind preview frame links.
+        *
+        * @param {string} [selector=a] - selector for anchors
+        */
+       function enablePreviewLinks( selector ) {
+
+               var anchors = toArray( document.querySelectorAll( selector ? 
selector : 'a' ) );
+
+               anchors.forEach( function( element ) {
+                       if( /^(http|www)/gi.test( element.getAttribute( 'href' 
) ) ) {
+                               element.addEventListener( 'click', 
onPreviewLinkClicked, false );
+                       }
+               } );
+
+       }
+
+       /**
+        * Unbind preview frame links.
+        */
+       function disablePreviewLinks( selector ) {
+
+               var anchors = toArray( document.querySelectorAll( selector ? 
selector : 'a' ) );
+
+               anchors.forEach( function( element ) {
+                       if( /^(http|www)/gi.test( element.getAttribute( 'href' 
) ) ) {
+                               element.removeEventListener( 'click', 
onPreviewLinkClicked, false );
+                       }
+               } );
+
+       }
+
+       /**
+        * Opens a preview window for the target URL.
+        *
+        * @param {string} url - url for preview iframe src
+        */
+       function showPreview( url ) {
+
+               closeOverlay();
+
+               dom.overlay = document.createElement( 'div' );
+               dom.overlay.classList.add( 'overlay' );
+               dom.overlay.classList.add( 'overlay-preview' );
+               dom.wrapper.appendChild( dom.overlay );
+
+               dom.overlay.innerHTML = [
+                       '<header>',
+                               '<a class="close" href="#"><span 
class="icon"></span></a>',
+                               '<a class="external" href="'+ url +'" 
target="_blank"><span class="icon"></span></a>',
+                       '</header>',
+                       '<div class="spinner"></div>',
+                       '<div class="viewport">',
+                               '<iframe src="'+ url +'"></iframe>',
+                               '<small class="viewport-inner">',
+                                       '<span class="x-frame-error">Unable to 
load iframe. This is likely due to the site\'s policy 
(x-frame-options).</span>',
+                               '</small>',
+                       '</div>'
+               ].join('');
+
+               dom.overlay.querySelector( 'iframe' ).addEventListener( 'load', 
function( event ) {
+                       dom.overlay.classList.add( 'loaded' );
+               }, false );
+
+               dom.overlay.querySelector( '.close' ).addEventListener( 
'click', function( event ) {
+                       closeOverlay();
+                       event.preventDefault();
+               }, false );
+
+               dom.overlay.querySelector( '.external' ).addEventListener( 
'click', function( event ) {
+                       closeOverlay();
+               }, false );
+
+               setTimeout( function() {
+                       dom.overlay.classList.add( 'visible' );
+               }, 1 );
+
+       }
+
+       /**
+        * Open or close help overlay window.
+        *
+        * @param {Boolean} [override] Flag which overrides the
+        * toggle logic and forcibly sets the desired state. True means
+        * help is open, false means it's closed.
+        */
+       function toggleHelp( override ){
+
+               if( typeof override === 'boolean' ) {
+                       override ? showHelp() : closeOverlay();
+               }
+               else {
+                       if( dom.overlay ) {
+                               closeOverlay();
+                       }
+                       else {
+                               showHelp();
+                       }
+               }
+       }
+
+       /**
+        * Opens an overlay window with help material.
+        */
+       function showHelp() {
+
+               if( config.help ) {
+
+                       closeOverlay();
+
+                       dom.overlay = document.createElement( 'div' );
+                       dom.overlay.classList.add( 'overlay' );
+                       dom.overlay.classList.add( 'overlay-help' );
+                       dom.wrapper.appendChild( dom.overlay );
+
+                       var html = '<p class="title">Keyboard 
Shortcuts</p><br/>';
+
+                       html += '<table><th>KEY</th><th>ACTION</th>';
+                       for( var key in keyboardShortcuts ) {
+                               html += '<tr><td>' + key + '</td><td>' + 
keyboardShortcuts[ key ] + '</td></tr>';
+                       }
+
+                       // Add custom key bindings that have associated 
descriptions
+                       for( var binding in registeredKeyBindings ) {
+                               if( registeredKeyBindings[binding].key && 
registeredKeyBindings[binding].description ) {
+                                       html += '<tr><td>' + 
registeredKeyBindings[binding].key + '</td><td>' + 
registeredKeyBindings[binding].description + '</td></tr>';
+                               }
+                       }
+
+                       html += '</table>';
+
+                       dom.overlay.innerHTML = [
+                               '<header>',
+                                       '<a class="close" href="#"><span 
class="icon"></span></a>',
+                               '</header>',
+                               '<div class="viewport">',
+                                       '<div class="viewport-inner">'+ html 
+'</div>',
+                               '</div>'
+                       ].join('');
+
+                       dom.overlay.querySelector( '.close' ).addEventListener( 
'click', function( event ) {
+                               closeOverlay();
+                               event.preventDefault();
+                       }, false );
+
+                       setTimeout( function() {
+                               dom.overlay.classList.add( 'visible' );
+                       }, 1 );
+
+               }
+
+       }
+
+       /**
+        * Closes any currently open overlay.
+        */
+       function closeOverlay() {
+
+               if( dom.overlay ) {
+                       dom.overlay.parentNode.removeChild( dom.overlay );
+                       dom.overlay = null;
+               }
+
+       }
+
+       /**
+        * Applies JavaScript-controlled layout rules to the
+        * presentation.
+        */
+       function layout() {
+
+               if( dom.wrapper && !isPrintingPDF() ) {
+
+                       if( !config.disableLayout ) {
+
+                               // On some mobile devices '100vh' is taller 
than the visible
+                               // viewport which leads to part of the 
presentation being
+                               // cut off. To work around this we define our 
own '--vh' custom
+                               // property where 100x adds up to the correct 
height.
+                               //
+                               // 
https://css-tricks.com/the-trick-to-viewport-units-on-mobile/
+                               if( isMobileDevice ) {
+                                       
document.documentElement.style.setProperty( '--vh', ( window.innerHeight * 0.01 
) + 'px' );
+                               }
+
+                               var size = getComputedSlideSize();
+
+                               var oldScale = scale;
+
+                               // Layout the contents of the slides
+                               layoutSlideContents( config.width, 
config.height );
+
+                               dom.slides.style.width = size.width + 'px';
+                               dom.slides.style.height = size.height + 'px';
+
+                               // Determine scale of content to fit within 
available space
+                               scale = Math.min( size.presentationWidth / 
size.width, size.presentationHeight / size.height );
+
+                               // Respect max/min scale settings
+                               scale = Math.max( scale, config.minScale );
+                               scale = Math.min( scale, config.maxScale );
+
+                               // Don't apply any scaling styles if scale is 1
+                               if( scale === 1 ) {
+                                       dom.slides.style.zoom = '';
+                                       dom.slides.style.left = '';
+                                       dom.slides.style.top = '';
+                                       dom.slides.style.bottom = '';
+                                       dom.slides.style.right = '';
+                                       transformSlides( { layout: '' } );
+                               }
+                               else {
+                                       // Prefer zoom for scaling up so that 
content remains crisp.
+                                       // Don't use zoom to scale down since 
that can lead to shifts
+                                       // in text layout/line breaks.
+                                       if( scale > 1 && features.zoom ) {
+                                               dom.slides.style.zoom = scale;
+                                               dom.slides.style.left = '';
+                                               dom.slides.style.top = '';
+                                               dom.slides.style.bottom = '';
+                                               dom.slides.style.right = '';
+                                               transformSlides( { layout: '' } 
);
+                                       }
+                                       // Apply scale transform as a fallback
+                                       else {
+                                               dom.slides.style.zoom = '';
+                                               dom.slides.style.left = '50%';
+                                               dom.slides.style.top = '50%';
+                                               dom.slides.style.bottom = 
'auto';
+                                               dom.slides.style.right = 'auto';
+                                               transformSlides( { layout: 
'translate(-50%, -50%) scale('+ scale +')' } );
+                                       }
+                               }
+
+                               // Select all slides, vertical and horizontal
+                               var slides = toArray( 
dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) );
+
+                               for( var i = 0, len = slides.length; i < len; 
i++ ) {
+                                       var slide = slides[ i ];
+
+                                       // Don't bother updating invisible 
slides
+                                       if( slide.style.display === 'none' ) {
+                                               continue;
+                                       }
+
+                                       if( config.center || 
slide.classList.contains( 'center' ) ) {
+                                               // Vertical stacks are not 
centred since their section
+                                               // children will be
+                                               if( slide.classList.contains( 
'stack' ) ) {
+                                                       slide.style.top = 0;
+                                               }
+                                               else {
+                                                       slide.style.top = 
Math.max( ( size.height - slide.scrollHeight ) / 2, 0 ) + 'px';
+                                               }
+                                       }
+                                       else {
+                                               slide.style.top = '';
+                                       }
+
+                               }
+
+                               if( oldScale !== scale ) {
+                                       dispatchEvent( 'resize', {
+                                               'oldScale': oldScale,
+                                               'scale': scale,
+                                               'size': size
+                                       } );
+                               }
+                       }
+
+                       updateProgress();
+                       updateParallax();
+
+                       if( isOverview() ) {
+                               updateOverview();
+                       }
+
+               }
+
+       }
+
+       /**
+        * Applies layout logic to the contents of all slides in
+        * the presentation.
+        *
+        * @param {string|number} width
+        * @param {string|number} height
+        */
+       function layoutSlideContents( width, height ) {
+
+               // Handle sizing of elements with the 'stretch' class
+               toArray( dom.slides.querySelectorAll( 'section > .stretch' ) 
).forEach( function( element ) {
+
+                       // Determine how much vertical space we can use
+                       var remainingHeight = getRemainingHeight( element, 
height );
+
+                       // Consider the aspect ratio of media elements
+                       if( /(img|video)/gi.test( element.nodeName ) ) {
+                               var nw = element.naturalWidth || 
element.videoWidth,
+                                       nh = element.naturalHeight || 
element.videoHeight;
+
+                               var es = Math.min( width / nw, remainingHeight 
/ nh );
+
+                               element.style.width = ( nw * es ) + 'px';
+                               element.style.height = ( nh * es ) + 'px';
+
+                       }
+                       else {
+                               element.style.width = width + 'px';
+                               element.style.height = remainingHeight + 'px';
+                       }
+
+               } );
+
+       }
+
+       /**
+        * Calculates the computed pixel size of our slides. These
+        * values are based on the width and height configuration
+        * options.
+        *
+        * @param {number} [presentationWidth=dom.wrapper.offsetWidth]
+        * @param {number} [presentationHeight=dom.wrapper.offsetHeight]
+        */
+       function getComputedSlideSize( presentationWidth, presentationHeight ) {
+
+               var size = {
+                       // Slide size
+                       width: config.width,
+                       height: config.height,
+
+                       // Presentation size
+                       presentationWidth: presentationWidth || 
dom.wrapper.offsetWidth,
+                       presentationHeight: presentationHeight || 
dom.wrapper.offsetHeight
+               };
+
+               // Reduce available space by margin
+               size.presentationWidth -= ( size.presentationWidth * 
config.margin );
+               size.presentationHeight -= ( size.presentationHeight * 
config.margin );
+
+               // Slide width may be a percentage of available width
+               if( typeof size.width === 'string' && /%$/.test( size.width ) ) 
{
+                       size.width = parseInt( size.width, 10 ) / 100 * 
size.presentationWidth;
+               }
+
+               // Slide height may be a percentage of available height
+               if( typeof size.height === 'string' && /%$/.test( size.height ) 
) {
+                       size.height = parseInt( size.height, 10 ) / 100 * 
size.presentationHeight;
+               }
+
+               return size;
+
+       }
+
+       /**
+        * Stores the vertical index of a stack so that the same
+        * vertical slide can be selected when navigating to and
+        * from the stack.
+        *
+        * @param {HTMLElement} stack The vertical stack element
+        * @param {string|number} [v=0] Index to memorize
+        */
+       function setPreviousVerticalIndex( stack, v ) {
+
+               if( typeof stack === 'object' && typeof stack.setAttribute === 
'function' ) {
+                       stack.setAttribute( 'data-previous-indexv', v || 0 );
+               }
+
+       }
+
+       /**
+        * Retrieves the vertical index which was stored using
+        * #setPreviousVerticalIndex() or 0 if no previous index
+        * exists.
+        *
+        * @param {HTMLElement} stack The vertical stack element
+        */
+       function getPreviousVerticalIndex( stack ) {
+
+               if( typeof stack === 'object' && typeof stack.setAttribute === 
'function' && stack.classList.contains( 'stack' ) ) {
+                       // Prefer manually defined start-indexv
+                       var attributeName = stack.hasAttribute( 
'data-start-indexv' ) ? 'data-start-indexv' : 'data-previous-indexv';
+
+                       return parseInt( stack.getAttribute( attributeName ) || 
0, 10 );
+               }
+
+               return 0;
+
+       }
+
+       /**
+        * Displays the overview of slides (quick nav) by scaling
+        * down and arranging all slide elements.
+        */
+       function activateOverview() {
+
+               // Only proceed if enabled in config
+               if( config.overview && !isOverview() ) {
+
+                       overview = true;
+
+                       dom.wrapper.classList.add( 'overview' );
+                       dom.wrapper.classList.remove( 'overview-deactivating' );
+
+                       if( features.overviewTransitions ) {
+                               setTimeout( function() {
+                                       dom.wrapper.classList.add( 
'overview-animated' );
+                               }, 1 );
+                       }
+
+                       // Don't auto-slide while in overview mode
+                       cancelAutoSlide();
+
+                       // Move the backgrounds element into the slide 
container to
+                       // that the same scaling is applied
+                       dom.slides.appendChild( dom.background );
+
+                       // Clicking on an overview slide navigates to it
+                       toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR 
) ).forEach( function( slide ) {
+                               if( !slide.classList.contains( 'stack' ) ) {
+                                       slide.addEventListener( 'click', 
onOverviewSlideClicked, true );
+                               }
+                       } );
+
+                       // Calculate slide sizes
+                       var margin = 70;
+                       var slideSize = getComputedSlideSize();
+                       overviewSlideWidth = slideSize.width + margin;
+                       overviewSlideHeight = slideSize.height + margin;
+
+                       // Reverse in RTL mode
+                       if( config.rtl ) {
+                               overviewSlideWidth = -overviewSlideWidth;
+                       }
+
+                       updateSlidesVisibility();
+                       layoutOverview();
+                       updateOverview();
+
+                       layout();
+
+                       // Notify observers of the overview showing
+                       dispatchEvent( 'overviewshown', {
+                               'indexh': indexh,
+                               'indexv': indexv,
+                               'currentSlide': currentSlide
+                       } );
+
+               }
+
+       }
+
+       /**
+        * Uses CSS transforms to position all slides in a grid for
+        * display inside of the overview mode.
+        */
+       function layoutOverview() {
+
+               // Layout slides
+               toArray( dom.wrapper.querySelectorAll( 
HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( hslide, h ) {
+                       hslide.setAttribute( 'data-index-h', h );
+                       transformElement( hslide, 'translate3d(' + ( h * 
overviewSlideWidth ) + 'px, 0, 0)' );
+
+                       if( hslide.classList.contains( 'stack' ) ) {
+
+                               toArray( hslide.querySelectorAll( 'section' ) 
).forEach( function( vslide, v ) {
+                                       vslide.setAttribute( 'data-index-h', h 
);
+                                       vslide.setAttribute( 'data-index-v', v 
);
+
+                                       transformElement( vslide, 
'translate3d(0, ' + ( v * overviewSlideHeight ) + 'px, 0)' );
+                               } );
+
+                       }
+               } );
+
+               // Layout slide backgrounds
+               toArray( dom.background.childNodes ).forEach( function( 
hbackground, h ) {
+                       transformElement( hbackground, 'translate3d(' + ( h * 
overviewSlideWidth ) + 'px, 0, 0)' );
+
+                       toArray( hbackground.querySelectorAll( 
'.slide-background' ) ).forEach( function( vbackground, v ) {
+                               transformElement( vbackground, 'translate3d(0, 
' + ( v * overviewSlideHeight ) + 'px, 0)' );
+                       } );
+               } );
+
+       }
+
+       /**
+        * Moves the overview viewport to the current slides.
+        * Called each time the current slide changes.
+        */
+       function updateOverview() {
+
+               var vmin = Math.min( window.innerWidth, window.innerHeight );
+               var scale = Math.max( vmin / 5, 150 ) / vmin;
+
+               transformSlides( {
+                       overview: [
+                               'scale('+ scale +')',
+                               'translateX('+ ( -indexh * overviewSlideWidth ) 
+'px)',
+                               'translateY('+ ( -indexv * overviewSlideHeight 
) +'px)'
+                       ].join( ' ' )
+               } );
+
+       }
+
+       /**
+        * Exits the slide overview and enters the currently
+        * active slide.
+        */
+       function deactivateOverview() {
+
+               // Only proceed if enabled in config
+               if( config.overview ) {
+
+                       overview = false;
+
+                       dom.wrapper.classList.remove( 'overview' );
+                       dom.wrapper.classList.remove( 'overview-animated' );
+
+                       // Temporarily add a class so that transitions can do 
different things
+                       // depending on whether they are exiting/entering 
overview, or just
+                       // moving from slide to slide
+                       dom.wrapper.classList.add( 'overview-deactivating' );
+
+                       setTimeout( function () {
+                               dom.wrapper.classList.remove( 
'overview-deactivating' );
+                       }, 1 );
+
+                       // Move the background element back out
+                       dom.wrapper.appendChild( dom.background );
+
+                       // Clean up changes made to slides
+                       toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR 
) ).forEach( function( slide ) {
+                               transformElement( slide, '' );
+
+                               slide.removeEventListener( 'click', 
onOverviewSlideClicked, true );
+                       } );
+
+                       // Clean up changes made to backgrounds
+                       toArray( dom.background.querySelectorAll( 
'.slide-background' ) ).forEach( function( background ) {
+                               transformElement( background, '' );
+                       } );
+
+                       transformSlides( { overview: '' } );
+
+                       slide( indexh, indexv );
+
+                       layout();
+
+                       cueAutoSlide();
+
+                       // Notify observers of the overview hiding
+                       dispatchEvent( 'overviewhidden', {
+                               'indexh': indexh,
+                               'indexv': indexv,
+                               'currentSlide': currentSlide
+                       } );
+
+               }
+       }
+
+       /**
+        * Toggles the slide overview mode on and off.
+        *
+        * @param {Boolean} [override] Flag which overrides the
+        * toggle logic and forcibly sets the desired state. True means
+        * overview is open, false means it's closed.
+        */
+       function toggleOverview( override ) {
+
+               if( typeof override === 'boolean' ) {
+                       override ? activateOverview() : deactivateOverview();
+               }
+               else {
+                       isOverview() ? deactivateOverview() : 
activateOverview();
+               }
+
+       }
+
+       /**
+        * Checks if the overview is currently active.
+        *
+        * @return {Boolean} true if the overview is active,
+        * false otherwise
+        */
+       function isOverview() {
+
+               return overview;
+
+       }
+
+       /**
+        * Return a hash URL that will resolve to the current slide location.
+        */
+       function locationHash() {
+
+               var url = '/';
+
+               // Attempt to create a named link based on the slide's ID
+               var id = currentSlide ? currentSlide.getAttribute( 'id' ) : 
null;
+               if( id ) {
+                       id = encodeURIComponent( id );
+               }
+
+               var indexf;
+               if( config.fragmentInURL ) {
+                       indexf = getIndices().f;
+               }
+
+               // If the current slide has an ID, use that as a named link,
+               // but we don't support named links with a fragment index
+               if( typeof id === 'string' && id.length && indexf === undefined 
) {
+                       url = '/' + id;
+               }
+               // Otherwise use the /h/v index
+               else {
+                       var hashIndexBase = config.hashOneBasedIndex ? 1 : 0;
+                       if( indexh > 0 || indexv > 0 || indexf !== undefined ) 
url += indexh + hashIndexBase;
+                       if( indexv > 0 || indexf !== undefined ) url += '/' + 
(indexv + hashIndexBase );
+                       if( indexf !== undefined ) url += '/' + indexf;
+               }
+
+               return url;
+
+       }
+
+       /**
+        * Checks if the current or specified slide is vertical
+        * (nested within another slide).
+        *
+        * @param {HTMLElement} [slide=currentSlide] The slide to check
+        * orientation of
+        * @return {Boolean}
+        */
+       function isVerticalSlide( slide ) {
+
+               // Prefer slide argument, otherwise use current slide
+               slide = slide ? slide : currentSlide;
+
+               return slide && slide.parentNode && 
!!slide.parentNode.nodeName.match( /section/i );
+
+       }
+
+       /**
+        * Handling the fullscreen functionality via the fullscreen API
+        *
+        * @see http://fullscreen.spec.whatwg.org/
+        * @see 
https://developer.mozilla.org/en-US/docs/DOM/Using_fullscreen_mode
+        */
+       function enterFullscreen() {
+
+               var element = document.documentElement;
+
+               // Check which implementation is available
+               var requestMethod = element.requestFullscreen ||
+                                                       
element.webkitRequestFullscreen ||
+                                                       
element.webkitRequestFullScreen ||
+                                                       
element.mozRequestFullScreen ||
+                                                       
element.msRequestFullscreen;
+
+               if( requestMethod ) {
+                       requestMethod.apply( element );
+               }
+
+       }
+
+       /**
+        * Shows the mouse pointer after it has been hidden with
+        * #hideCursor.
+        */
+       function showCursor() {
+
+               if( cursorHidden ) {
+                       cursorHidden = false;
+                       dom.wrapper.style.cursor = '';
+               }
+
+       }
+
+       /**
+        * Hides the mouse pointer when it's on top of the .reveal
+        * container.
+        */
+       function hideCursor() {
+
+               if( cursorHidden === false ) {
+                       cursorHidden = true;
+                       dom.wrapper.style.cursor = 'none';
+               }
+
+       }
+
+       /**
+        * Enters the paused mode which fades everything on screen to
+        * black.
+        */
+       function pause() {
+
+               if( config.pause ) {
+                       var wasPaused = dom.wrapper.classList.contains( 
'paused' );
+
+                       cancelAutoSlide();
+                       dom.wrapper.classList.add( 'paused' );
+
+                       if( wasPaused === false ) {
+                               dispatchEvent( 'paused' );
+                       }
+               }
+
+       }
+
+       /**
+        * Exits from the paused mode.
+        */
+       function resume() {
+
+               var wasPaused = dom.wrapper.classList.contains( 'paused' );
+               dom.wrapper.classList.remove( 'paused' );
+
+               cueAutoSlide();
+
+               if( wasPaused ) {
+                       dispatchEvent( 'resumed' );
+               }
+
+       }
+
+       /**
+        * Toggles the paused mode on and off.
+        */
+       function togglePause( override ) {
+
+               if( typeof override === 'boolean' ) {
+                       override ? pause() : resume();
+               }
+               else {
+                       isPaused() ? resume() : pause();
+               }
+
+       }
+
+       /**
+        * Checks if we are currently in the paused mode.
+        *
+        * @return {Boolean}
+        */
+       function isPaused() {
+
+               return dom.wrapper.classList.contains( 'paused' );
+
+       }
+
+       /**
+        * Toggles the auto slide mode on and off.
+        *
+        * @param {Boolean} [override] Flag which sets the desired state.
+        * True means autoplay starts, false means it stops.
+        */
+
+       function toggleAutoSlide( override ) {
+
+               if( typeof override === 'boolean' ) {
+                       override ? resumeAutoSlide() : pauseAutoSlide();
+               }
+
+               else {
+                       autoSlidePaused ? resumeAutoSlide() : pauseAutoSlide();
+               }
+
+       }
+
+       /**
+        * Checks if the auto slide mode is currently on.
+        *
+        * @return {Boolean}
+        */
+       function isAutoSliding() {
+
+               return !!( autoSlide && !autoSlidePaused );
+
+       }
+
+       /**
+        * Steps from the current point in the presentation to the
+        * slide which matches the specified horizontal and vertical
+        * indices.
+        *
+        * @param {number} [h=indexh] Horizontal index of the target slide
+        * @param {number} [v=indexv] Vertical index of the target slide
+        * @param {number} [f] Index of a fragment within the
+        * target slide to activate
+        * @param {number} [o] Origin for use in multimaster environments
+        */
+       function slide( h, v, f, o ) {
+
+               // Remember where we were at before
+               previousSlide = currentSlide;
+
+               // Query all horizontal slides in the deck
+               var horizontalSlides = dom.wrapper.querySelectorAll( 
HORIZONTAL_SLIDES_SELECTOR );
+
+               // Abort if there are no slides
+               if( horizontalSlides.length === 0 ) return;
+
+               // If no vertical index is specified and the upcoming slide is a
+               // stack, resume at its previous vertical index
+               if( v === undefined && !isOverview() ) {
+                       v = getPreviousVerticalIndex( horizontalSlides[ h ] );
+               }
+
+               // If we were on a vertical stack, remember what vertical index
+               // it was on so we can resume at the same position when 
returning
+               if( previousSlide && previousSlide.parentNode && 
previousSlide.parentNode.classList.contains( 'stack' ) ) {
+                       setPreviousVerticalIndex( previousSlide.parentNode, 
indexv );
+               }
+
+               // Remember the state before this slide
+               var stateBefore = state.concat();
+
+               // Reset the state array
+               state.length = 0;
+
+               var indexhBefore = indexh || 0,
+                       indexvBefore = indexv || 0;
+
+               // Activate and transition to the new slide
+               indexh = updateSlides( HORIZONTAL_SLIDES_SELECTOR, h === 
undefined ? indexh : h );
+               indexv = updateSlides( VERTICAL_SLIDES_SELECTOR, v === 
undefined ? indexv : v );
+
+               // Update the visibility of slides now that the indices have 
changed
+               updateSlidesVisibility();
+
+               layout();
+
+               // Update the overview if it's currently active
+               if( isOverview() ) {
+                       updateOverview();
+               }
+
+               // Find the current horizontal slide and any possible vertical 
slides
+               // within it
+               var currentHorizontalSlide = horizontalSlides[ indexh ],
+                       currentVerticalSlides = 
currentHorizontalSlide.querySelectorAll( 'section' );
+
+               // Store references to the previous and current slides
+               currentSlide = currentVerticalSlides[ indexv ] || 
currentHorizontalSlide;
+
+               // Show fragment, if specified
+               if( typeof f !== 'undefined' ) {
+                       navigateFragment( f );
+               }
+
+               // Dispatch an event if the slide changed
+               var slideChanged = ( indexh !== indexhBefore || indexv !== 
indexvBefore );
+               if (!slideChanged) {
+                       // Ensure that the previous slide is never the same as 
the current
+                       previousSlide = null;
+               }
+
+               // Solves an edge case where the previous slide maintains the
+               // 'present' class when navigating between adjacent vertical
+               // stacks
+               if( previousSlide && previousSlide !== currentSlide ) {
+                       previousSlide.classList.remove( 'present' );
+                       previousSlide.setAttribute( 'aria-hidden', 'true' );
+
+                       // Reset all slides upon navigate to home
+                       // Issue: #285
+                       if ( dom.wrapper.querySelector( HOME_SLIDE_SELECTOR 
).classList.contains( 'present' ) ) {
+                               // Launch async task
+                               setTimeout( function () {
+                                       var slides = toArray( 
dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.stack') ), i;
+                                       for( i in slides ) {
+                                               if( slides[i] ) {
+                                                       // Reset stack
+                                                       
setPreviousVerticalIndex( slides[i], 0 );
+                                               }
+                                       }
+                               }, 0 );
+                       }
+               }
+
+               // Apply the new state
+               stateLoop: for( var i = 0, len = state.length; i < len; i++ ) {
+                       // Check if this state existed on the previous slide. 
If it
+                       // did, we will avoid adding it repeatedly
+                       for( var j = 0; j < stateBefore.length; j++ ) {
+                               if( stateBefore[j] === state[i] ) {
+                                       stateBefore.splice( j, 1 );
+                                       continue stateLoop;
+                               }
+                       }
+
+                       document.documentElement.classList.add( state[i] );
+
+                       // Dispatch custom event matching the state's name
+                       dispatchEvent( state[i] );
+               }
+
+               // Clean up the remains of the previous state
+               while( stateBefore.length ) {
+                       document.documentElement.classList.remove( 
stateBefore.pop() );
+               }
+
+               if( slideChanged ) {
+                       dispatchEvent( 'slidechanged', {
+                               'indexh': indexh,
+                               'indexv': indexv,
+                               'previousSlide': previousSlide,
+                               'currentSlide': currentSlide,
+                               'origin': o
+                       } );
+               }
+
+               // Handle embedded content
+               if( slideChanged || !previousSlide ) {
+                       stopEmbeddedContent( previousSlide );
+                       startEmbeddedContent( currentSlide );
+               }
+
+               // Announce the current slide contents, for screen readers
+               dom.statusDiv.textContent = getStatusText( currentSlide );
+
+               updateControls();
+               updateProgress();
+               updateBackground();
+               updateParallax();
+               updateSlideNumber();
+               updateNotes();
+               updateFragments();
+
+               // Update the URL hash
+               writeURL();
+
+               cueAutoSlide();
+
+       }
+
+       /**
+        * Syncs the presentation with the current DOM. Useful
+        * when new slides or control elements are added or when
+        * the configuration has changed.
+        */
+       function sync() {
+
+               // Subscribe to input
+               removeEventListeners();
+               addEventListeners();
+
+               // Force a layout to make sure the current config is accounted 
for
+               layout();
+
+               // Reflect the current autoSlide value
+               autoSlide = config.autoSlide;
+
+               // Start auto-sliding if it's enabled
+               cueAutoSlide();
+
+               // Re-create the slide backgrounds
+               createBackgrounds();
+
+               // Write the current hash to the URL
+               writeURL();
+
+               sortAllFragments();
+
+               updateControls();
+               updateProgress();
+               updateSlideNumber();
+               updateSlidesVisibility();
+               updateBackground( true );
+               updateNotesVisibility();
+               updateNotes();
+
+               formatEmbeddedContent();
+
+               // Start or stop embedded content depending on global config
+               if( config.autoPlayMedia === false ) {
+                       stopEmbeddedContent( currentSlide, { unloadIframes: 
false } );
+               }
+               else {
+                       startEmbeddedContent( currentSlide );
+               }
+
+               if( isOverview() ) {
+                       layoutOverview();
+               }
+
+       }
+
+       /**
+        * Updates reveal.js to keep in sync with new slide attributes. For
+        * example, if you add a new `data-background-image` you can call
+        * this to have reveal.js render the new background image.
+        *
+        * Similar to #sync() but more efficient when you only need to
+        * refresh a specific slide.
+        *
+        * @param {HTMLElement} slide
+        */
+       function syncSlide( slide ) {
+
+               // Default to the current slide
+               slide = slide || currentSlide;
+
+               syncBackground( slide );
+               syncFragments( slide );
+
+               updateBackground();
+               updateNotes();
+
+               loadSlide( slide );
+
+       }
+
+       /**
+        * Formats the fragments on the given slide so that they have
+        * valid indices. Call this if fragments are changed in the DOM
+        * after reveal.js has already initialized.
+        *
+        * @param {HTMLElement} slide
+        * @return {Array} a list of the HTML fragments that were synced
+        */
+       function syncFragments( slide ) {
+
+               // Default to the current slide
+               slide = slide || currentSlide;
+
+               return sortFragments( slide.querySelectorAll( '.fragment' ) );
+
+       }
+
+       /**
+        * Resets all vertical slides so that only the first
+        * is visible.
+        */
+       function resetVerticalSlides() {
+
+               var horizontalSlides = toArray( dom.wrapper.querySelectorAll( 
HORIZONTAL_SLIDES_SELECTOR ) );
+               horizontalSlides.forEach( function( horizontalSlide ) {
+
+                       var verticalSlides = toArray( 
horizontalSlide.querySelectorAll( 'section' ) );
+                       verticalSlides.forEach( function( verticalSlide, y ) {
+
+                               if( y > 0 ) {
+                                       verticalSlide.classList.remove( 
'present' );
+                                       verticalSlide.classList.remove( 'past' 
);
+                                       verticalSlide.classList.add( 'future' );
+                                       verticalSlide.setAttribute( 
'aria-hidden', 'true' );
+                               }
+
+                       } );
+
+               } );
+
+       }
+
+       /**
+        * Sorts and formats all of fragments in the
+        * presentation.
+        */
+       function sortAllFragments() {
+
+               var horizontalSlides = toArray( dom.wrapper.querySelectorAll( 
HORIZONTAL_SLIDES_SELECTOR ) );
+               horizontalSlides.forEach( function( horizontalSlide ) {
+
+                       var verticalSlides = toArray( 
horizontalSlide.querySelectorAll( 'section' ) );
+                       verticalSlides.forEach( function( verticalSlide, y ) {
+
+                               sortFragments( verticalSlide.querySelectorAll( 
'.fragment' ) );
+
+                       } );
+
+                       if( verticalSlides.length === 0 ) sortFragments( 
horizontalSlide.querySelectorAll( '.fragment' ) );
+
+               } );
+
+       }
+
+       /**
+        * Randomly shuffles all slides in the deck.
+        */
+       function shuffle() {
+
+               var slides = toArray( dom.wrapper.querySelectorAll( 
HORIZONTAL_SLIDES_SELECTOR ) );
+
+               slides.forEach( function( slide ) {
+
+                       // Insert this slide next to another random slide. This 
may
+                       // cause the slide to insert before itself but that's 
fine.
+                       dom.slides.insertBefore( slide, slides[ Math.floor( 
Math.random() * slides.length ) ] );
+
+               } );
+
+       }
+
+       /**
+        * Updates one dimension of slides by showing the slide
+        * with the specified index.
+        *
+        * @param {string} selector A CSS selector that will fetch
+        * the group of slides we are working with
+        * @param {number} index The index of the slide that should be
+        * shown
+        *
+        * @return {number} The index of the slide that is now shown,
+        * might differ from the passed in index if it was out of
+        * bounds.
+        */
+       function updateSlides( selector, index ) {
+
+               // Select all slides and convert the NodeList result to
+               // an array
+               var slides = toArray( dom.wrapper.querySelectorAll( selector ) 
),
+                       slidesLength = slides.length;
+
+               var printMode = isPrintingPDF();
+
+               if( slidesLength ) {
+
+                       // Should the index loop?
+                       if( config.loop ) {
+                               index %= slidesLength;
+
+                               if( index < 0 ) {
+                                       index = slidesLength + index;
+                               }
+                       }
+
+                       // Enforce max and minimum index bounds
+                       index = Math.max( Math.min( index, slidesLength - 1 ), 
0 );
+
+                       for( var i = 0; i < slidesLength; i++ ) {
+                               var element = slides[i];
+
+                               var reverse = config.rtl && !isVerticalSlide( 
element );
+
+                               element.classList.remove( 'past' );
+                               element.classList.remove( 'present' );
+                               element.classList.remove( 'future' );
+
+                               // 
http://www.w3.org/html/wg/drafts/html/master/editing.html#the-hidden-attribute
+                               element.setAttribute( 'hidden', '' );
+                               element.setAttribute( 'aria-hidden', 'true' );
+
+                               // If this element contains vertical slides
+                               if( element.querySelector( 'section' ) ) {
+                                       element.classList.add( 'stack' );
+                               }
+
+                               // If we're printing static slides, all slides 
are "present"
+                               if( printMode ) {
+                                       element.classList.add( 'present' );
+                                       continue;
+                               }
+
+                               if( i < index ) {
+                                       // Any element previous to index is 
given the 'past' class
+                                       element.classList.add( reverse ? 
'future' : 'past' );
+
+                                       if( config.fragments ) {
+                                               // Show all fragments in prior 
slides
+                                               toArray( 
element.querySelectorAll( '.fragment' ) ).forEach( function( fragment ) {
+                                                       fragment.classList.add( 
'visible' );
+                                                       
fragment.classList.remove( 'current-fragment' );
+                                               } );
+                                       }
+                               }
+                               else if( i > index ) {
+                                       // Any element subsequent to index is 
given the 'future' class
+                                       element.classList.add( reverse ? 'past' 
: 'future' );
+
+                                       if( config.fragments ) {
+                                               // Hide all fragments in future 
slides
+                                               toArray( 
element.querySelectorAll( '.fragment.visible' ) ).forEach( function( fragment ) 
{
+                                                       
fragment.classList.remove( 'visible' );
+                                                       
fragment.classList.remove( 'current-fragment' );
+                                               } );
+                                       }
+                               }
+                       }
+
+                       // Mark the current slide as present
+                       slides[index].classList.add( 'present' );
+                       slides[index].removeAttribute( 'hidden' );
+                       slides[index].removeAttribute( 'aria-hidden' );
+
+                       // If this slide has a state associated with it, add it
+                       // onto the current state of the deck
+                       var slideState = slides[index].getAttribute( 
'data-state' );
+                       if( slideState ) {
+                               state = state.concat( slideState.split( ' ' ) );
+                       }
+
+               }
+               else {
+                       // Since there are no slides we can't be anywhere 
beyond the
+                       // zeroth index
+                       index = 0;
+               }
+
+               return index;
+
+       }
+
+       /**
+        * Optimization method; hide all slides that are far away
+        * from the present slide.
+        */
+       function updateSlidesVisibility() {
+
+               // Select all slides and convert the NodeList result to
+               // an array
+               var horizontalSlides = toArray( dom.wrapper.querySelectorAll( 
HORIZONTAL_SLIDES_SELECTOR ) ),
+                       horizontalSlidesLength = horizontalSlides.length,
+                       distanceX,
+                       distanceY;
+
+               if( horizontalSlidesLength && typeof indexh !== 'undefined' ) {
+
+                       // The number of steps away from the present slide that 
will
+                       // be visible
+                       var viewDistance = isOverview() ? 10 : 
config.viewDistance;
+
+                       // Limit view distance on weaker devices
+                       if( isMobileDevice ) {
+                               viewDistance = isOverview() ? 6 : 2;
+                       }
+
+                       // All slides need to be visible when exporting to PDF
+                       if( isPrintingPDF() ) {
+                               viewDistance = Number.MAX_VALUE;
+                       }
+
+                       for( var x = 0; x < horizontalSlidesLength; x++ ) {
+                               var horizontalSlide = horizontalSlides[x];
+
+                               var verticalSlides = toArray( 
horizontalSlide.querySelectorAll( 'section' ) ),
+                                       verticalSlidesLength = 
verticalSlides.length;
+
+                               // Determine how far away this slide is from 
the present
+                               distanceX = Math.abs( ( indexh || 0 ) - x ) || 
0;
+
+                               // If the presentation is looped, distance 
should measure
+                               // 1 between the first and last slides
+                               if( config.loop ) {
+                                       distanceX = Math.abs( ( ( indexh || 0 ) 
- x ) % ( horizontalSlidesLength - viewDistance ) ) || 0;
+                               }
+
+                               // Show the horizontal slide if it's within the 
view distance
+                               if( distanceX < viewDistance ) {
+                                       loadSlide( horizontalSlide );
+                               }
+                               else {
+                                       unloadSlide( horizontalSlide );
+                               }
+
+                               if( verticalSlidesLength ) {
+
+                                       var oy = getPreviousVerticalIndex( 
horizontalSlide );
+
+                                       for( var y = 0; y < 
verticalSlidesLength; y++ ) {
+                                               var verticalSlide = 
verticalSlides[y];
+
+                                               distanceY = x === ( indexh || 0 
) ? Math.abs( ( indexv || 0 ) - y ) : Math.abs( y - oy );
+
+                                               if( distanceX + distanceY < 
viewDistance ) {
+                                                       loadSlide( 
verticalSlide );
+                                               }
+                                               else {
+                                                       unloadSlide( 
verticalSlide );
+                                               }
+                                       }
+
+                               }
+                       }
+
+                       // Flag if there are ANY vertical slides, anywhere in 
the deck
+                       if( dom.wrapper.querySelectorAll( 
'.slides>section>section' ).length ) {
+                               dom.wrapper.classList.add( 
'has-vertical-slides' );
+                       }
+                       else {
+                               dom.wrapper.classList.remove( 
'has-vertical-slides' );
+                       }
+
+                       // Flag if there are ANY horizontal slides, anywhere in 
the deck
+                       if( dom.wrapper.querySelectorAll( '.slides>section' 
).length > 1 ) {
+                               dom.wrapper.classList.add( 
'has-horizontal-slides' );
+                       }
+                       else {
+                               dom.wrapper.classList.remove( 
'has-horizontal-slides' );
+                       }
+
+               }
+
+       }
+
+       /**
+        * Pick up notes from the current slide and display them
+        * to the viewer.
+        *
+        * @see {@link config.showNotes}
+        */
+       function updateNotes() {
+
+               if( config.showNotes && dom.speakerNotes && currentSlide && 
!isPrintingPDF() ) {
+
+                       dom.speakerNotes.innerHTML = getSlideNotes() || '<span 
class="notes-placeholder">No notes on this slide.</span>';
+
+               }
+
+       }
+
+       /**
+        * Updates the visibility of the speaker notes sidebar that
+        * is used to share annotated slides. The notes sidebar is
+        * only visible if showNotes is true and there are notes on
+        * one or more slides in the deck.
+        */
+       function updateNotesVisibility() {
+
+               if( config.showNotes && hasNotes() ) {
+                       dom.wrapper.classList.add( 'show-notes' );
+               }
+               else {
+                       dom.wrapper.classList.remove( 'show-notes' );
+               }
+
+       }
+
+       /**
+        * Checks if there are speaker notes for ANY slide in the
+        * presentation.
+        */
+       function hasNotes() {
+
+               return dom.slides.querySelectorAll( '[data-notes], aside.notes' 
).length > 0;
+
+       }
+
+       /**
+        * Updates the progress bar to reflect the current slide.
+        */
+       function updateProgress() {
+
+               // Update progress if enabled
+               if( config.progress && dom.progressbar ) {
+
+                       dom.progressbar.style.width = getProgress() * 
dom.wrapper.offsetWidth + 'px';
+
+               }
+
+       }
+
+
+       /**
+        * Updates the slide number to match the current slide.
+        */
+       function updateSlideNumber() {
+
+               // Update slide number if enabled
+               if( config.slideNumber && dom.slideNumber ) {
+
+                       var value;
+                       var format = 'h.v';
+
+                       if( typeof config.slideNumber === 'function' ) {
+                               value = config.slideNumber();
+                       }
+                       else {
+                               // Check if a custom number format is available
+                               if( typeof config.slideNumber === 'string' ) {
+                                       format = config.slideNumber;
+                               }
+
+                               // If there are ONLY vertical slides in this 
deck, always use
+                               // a flattened slide number
+                               if( !/c/.test( format ) && 
dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ).length === 1 ) {
+                                       format = 'c';
+                               }
+
+                               value = [];
+                               switch( format ) {
+                                       case 'c':
+                                               value.push( getSlidePastCount() 
+ 1 );
+                                               break;
+                                       case 'c/t':
+                                               value.push( getSlidePastCount() 
+ 1, '/', getTotalSlides() );
+                                               break;
+                                       case 'h/v':
+                                               value.push( indexh + 1 );
+                                               if( isVerticalSlide() ) 
value.push( '/', indexv + 1 );
+                                               break;
+                                       default:
+                                               value.push( indexh + 1 );
+                                               if( isVerticalSlide() ) 
value.push( '.', indexv + 1 );
+                               }
+                       }
+
+                       dom.slideNumber.innerHTML = formatSlideNumber( 
value[0], value[1], value[2] );
+               }
+
+       }
+
+       /**
+        * Applies HTML formatting to a slide number before it's
+        * written to the DOM.
+        *
+        * @param {number} a Current slide
+        * @param {string} delimiter Character to separate slide numbers
+        * @param {(number|*)} b Total slides
+        * @return {string} HTML string fragment
+        */
+       function formatSlideNumber( a, delimiter, b ) {
+
+               var url = '#' + locationHash();
+               if( typeof b === 'number' && !isNaN( b ) ) {
+                       return  '<a href="' + url + '">' +
+                                       '<span class="slide-number-a">'+ a 
+'</span>' +
+                                       '<span 
class="slide-number-delimiter">'+ delimiter +'</span>' +
+                                       '<span class="slide-number-b">'+ b 
+'</span>' +
+                                       '</a>';
+               }
+               else {
+                       return '<a href="' + url + '">' +
+                              '<span class="slide-number-a">'+ a +'</span>' +
+                              '</a>';
+               }
+
+       }
+
+       /**
+        * Updates the state of all control/navigation arrows.
+        */
+       function updateControls() {
+
+               var routes = availableRoutes();
+               var fragments = availableFragments();
+
+               // Remove the 'enabled' class from all directions
+               dom.controlsLeft.concat( dom.controlsRight )
+                                               .concat( dom.controlsUp )
+                                               .concat( dom.controlsDown )
+                                               .concat( dom.controlsPrev )
+                                               .concat( dom.controlsNext 
).forEach( function( node ) {
+                       node.classList.remove( 'enabled' );
+                       node.classList.remove( 'fragmented' );
+
+                       // Set 'disabled' attribute on all directions
+                       node.setAttribute( 'disabled', 'disabled' );
+               } );
+
+               // Add the 'enabled' class to the available routes; remove 
'disabled' attribute to enable buttons
+               if( routes.left ) dom.controlsLeft.forEach( function( el ) { 
el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+               if( routes.right ) dom.controlsRight.forEach( function( el ) { 
el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+               if( routes.up ) dom.controlsUp.forEach( function( el ) { 
el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+               if( routes.down ) dom.controlsDown.forEach( function( el ) { 
el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+
+               // Prev/next buttons
+               if( routes.left || routes.up ) dom.controlsPrev.forEach( 
function( el ) { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' 
); } );
+               if( routes.right || routes.down ) dom.controlsNext.forEach( 
function( el ) { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' 
); } );
+
+               // Highlight fragment directions
+               if( currentSlide ) {
+
+                       // Always apply fragment decorator to prev/next buttons
+                       if( fragments.prev ) dom.controlsPrev.forEach( 
function( el ) { el.classList.add( 'fragmented', 'enabled' ); 
el.removeAttribute( 'disabled' ); } );
+                       if( fragments.next ) dom.controlsNext.forEach( 
function( el ) { el.classList.add( 'fragmented', 'enabled' ); 
el.removeAttribute( 'disabled' ); } );
+
+                       // Apply fragment decorators to directional buttons 
based on
+                       // what slide axis they are in
+                       if( isVerticalSlide( currentSlide ) ) {
+                               if( fragments.prev ) dom.controlsUp.forEach( 
function( el ) { el.classList.add( 'fragmented', 'enabled' ); 
el.removeAttribute( 'disabled' ); } );
+                               if( fragments.next ) dom.controlsDown.forEach( 
function( el ) { el.classList.add( 'fragmented', 'enabled' ); 
el.removeAttribute( 'disabled' ); } );
+                       }
+                       else {
+                               if( fragments.prev ) dom.controlsLeft.forEach( 
function( el ) { el.classList.add( 'fragmented', 'enabled' ); 
el.removeAttribute( 'disabled' ); } );
+                               if( fragments.next ) dom.controlsRight.forEach( 
function( el ) { el.classList.add( 'fragmented', 'enabled' ); 
el.removeAttribute( 'disabled' ); } );
+                       }
+
+               }
+
+               if( config.controlsTutorial ) {
+
+                       // Highlight control arrows with an animation to ensure
+                       // that the viewer knows how to navigate
+                       if( !hasNavigatedDown && routes.down ) {
+                               dom.controlsDownArrow.classList.add( 
'highlight' );
+                       }
+                       else {
+                               dom.controlsDownArrow.classList.remove( 
'highlight' );
+
+                               if( !hasNavigatedRight && routes.right && 
indexv === 0 ) {
+                                       dom.controlsRightArrow.classList.add( 
'highlight' );
+                               }
+                               else {
+                                       
dom.controlsRightArrow.classList.remove( 'highlight' );
+                               }
+                       }
+
+               }
+
+       }
+
+       /**
+        * Updates the background elements to reflect the current
+        * slide.
+        *
+        * @param {boolean} includeAll If true, the backgrounds of
+        * all vertical slides (not just the present) will be updated.
+        */
+       function updateBackground( includeAll ) {
+
+               var currentBackground = null;
+
+               // Reverse past/future classes when in RTL mode
+               var horizontalPast = config.rtl ? 'future' : 'past',
+                       horizontalFuture = config.rtl ? 'past' : 'future';
+
+               // Update the classes of all backgrounds to match the
+               // states of their slides (past/present/future)
+               toArray( dom.background.childNodes ).forEach( function( 
backgroundh, h ) {
+
+                       backgroundh.classList.remove( 'past' );
+                       backgroundh.classList.remove( 'present' );
+                       backgroundh.classList.remove( 'future' );
+
+                       if( h < indexh ) {
+                               backgroundh.classList.add( horizontalPast );
+                       }
+                       else if ( h > indexh ) {
+                               backgroundh.classList.add( horizontalFuture );
+                       }
+                       else {
+                               backgroundh.classList.add( 'present' );
+
+                               // Store a reference to the current background 
element
+                               currentBackground = backgroundh;
+                       }
+
+                       if( includeAll || h === indexh ) {
+                               toArray( backgroundh.querySelectorAll( 
'.slide-background' ) ).forEach( function( backgroundv, v ) {
+
+                                       backgroundv.classList.remove( 'past' );
+                                       backgroundv.classList.remove( 'present' 
);
+                                       backgroundv.classList.remove( 'future' 
);
+
+                                       if( v < indexv ) {
+                                               backgroundv.classList.add( 
'past' );
+                                       }
+                                       else if ( v > indexv ) {
+                                               backgroundv.classList.add( 
'future' );
+                                       }
+                                       else {
+                                               backgroundv.classList.add( 
'present' );
+
+                                               // Only if this is the present 
horizontal and vertical slide
+                                               if( h === indexh ) 
currentBackground = backgroundv;
+                                       }
+
+                               } );
+                       }
+
+               } );
+
+               // Stop content inside of previous backgrounds
+               if( previousBackground ) {
+
+                       stopEmbeddedContent( previousBackground );
+
+               }
+
+               // Start content in the current background
+               if( currentBackground ) {
+
+                       startEmbeddedContent( currentBackground );
+
+                       var currentBackgroundContent = 
currentBackground.querySelector( '.slide-background-content' );
+                       if( currentBackgroundContent ) {
+
+                               var backgroundImageURL = 
currentBackgroundContent.style.backgroundImage || '';
+
+                               // Restart GIFs (doesn't work in Firefox)
+                               if( /\.gif/i.test( backgroundImageURL ) ) {
+                                       
currentBackgroundContent.style.backgroundImage = '';
+                                       window.getComputedStyle( 
currentBackgroundContent ).opacity;
+                                       
currentBackgroundContent.style.backgroundImage = backgroundImageURL;
+                               }
+
+                       }
+
+                       // Don't transition between identical backgrounds. This
+                       // prevents unwanted flicker.
+                       var previousBackgroundHash = previousBackground ? 
previousBackground.getAttribute( 'data-background-hash' ) : null;
+                       var currentBackgroundHash = 
currentBackground.getAttribute( 'data-background-hash' );
+                       if( currentBackgroundHash && currentBackgroundHash === 
previousBackgroundHash && currentBackground !== previousBackground ) {
+                               dom.background.classList.add( 'no-transition' );
+                       }
+
+                       previousBackground = currentBackground;
+
+               }
+
+               // If there's a background brightness flag for this slide,
+               // bubble it to the .reveal container
+               if( currentSlide ) {
+                       [ 'has-light-background', 'has-dark-background' 
].forEach( function( classToBubble ) {
+                               if( currentSlide.classList.contains( 
classToBubble ) ) {
+                                       dom.wrapper.classList.add( 
classToBubble );
+                               }
+                               else {
+                                       dom.wrapper.classList.remove( 
classToBubble );
+                               }
+                       } );
+               }
+
+               // Allow the first background to apply without transition
+               setTimeout( function() {
+                       dom.background.classList.remove( 'no-transition' );
+               }, 1 );
+
+       }
+
+       /**
+        * Updates the position of the parallax background based
+        * on the current slide index.
+        */
+       function updateParallax() {
+
+               if( config.parallaxBackgroundImage ) {
+
+                       var horizontalSlides = dom.wrapper.querySelectorAll( 
HORIZONTAL_SLIDES_SELECTOR ),
+                               verticalSlides = dom.wrapper.querySelectorAll( 
VERTICAL_SLIDES_SELECTOR );
+
+                       var backgroundSize = 
dom.background.style.backgroundSize.split( ' ' ),
+                               backgroundWidth, backgroundHeight;
+
+                       if( backgroundSize.length === 1 ) {
+                               backgroundWidth = backgroundHeight = parseInt( 
backgroundSize[0], 10 );
+                       }
+                       else {
+                               backgroundWidth = parseInt( backgroundSize[0], 
10 );
+                               backgroundHeight = parseInt( backgroundSize[1], 
10 );
+                       }
+
+                       var slideWidth = dom.background.offsetWidth,
+                               horizontalSlideCount = horizontalSlides.length,
+                               horizontalOffsetMultiplier,
+                               horizontalOffset;
+
+                       if( typeof config.parallaxBackgroundHorizontal === 
'number' ) {
+                               horizontalOffsetMultiplier = 
config.parallaxBackgroundHorizontal;
+                       }
+                       else {
+                               horizontalOffsetMultiplier = 
horizontalSlideCount > 1 ? ( backgroundWidth - slideWidth ) / ( 
horizontalSlideCount-1 ) : 0;
+                       }
+
+                       horizontalOffset = horizontalOffsetMultiplier * indexh 
* -1;
+
+                       var slideHeight = dom.background.offsetHeight,
+                               verticalSlideCount = verticalSlides.length,
+                               verticalOffsetMultiplier,
+                               verticalOffset;
+
+                       if( typeof config.parallaxBackgroundVertical === 
'number' ) {
+                               verticalOffsetMultiplier = 
config.parallaxBackgroundVertical;
+                       }
+                       else {
+                               verticalOffsetMultiplier = ( backgroundHeight - 
slideHeight ) / ( verticalSlideCount-1 );
+                       }
+
+                       verticalOffset = verticalSlideCount > 0 ?  
verticalOffsetMultiplier * indexv : 0;
+
+                       dom.background.style.backgroundPosition = 
horizontalOffset + 'px ' + -verticalOffset + 'px';
+
+               }
+
+       }
+
+       /**
+        * Should the given element be preloaded?
+        * Decides based on local element attributes and global config.
+        *
+        * @param {HTMLElement} element
+        */
+       function shouldPreload( element ) {
+
+               // Prefer an explicit global preload setting
+               var preload = config.preloadIframes;
+
+               // If no global setting is available, fall back on the element's
+               // own preload setting
+               if( typeof preload !== 'boolean' ) {
+                       preload = element.hasAttribute( 'data-preload' );
+               }
+
+               return preload;
+       }
+
+       /**
+        * Called when the given slide is within the configured view
+        * distance. Shows the slide element and loads any content
+        * that is set to load lazily (data-src).
+        *
+        * @param {HTMLElement} slide Slide to show
+        */
+       function loadSlide( slide, options ) {
+
+               options = options || {};
+
+               // Show the slide element
+               slide.style.display = config.display;
+
+               // Media elements with data-src attributes
+               toArray( slide.querySelectorAll( 'img[data-src], 
video[data-src], audio[data-src], iframe[data-src]' ) ).forEach( function( 
element ) {
+                       if( element.tagName !== 'IFRAME' || shouldPreload( 
element ) ) {
+                               element.setAttribute( 'src', 
element.getAttribute( 'data-src' ) );
+                               element.setAttribute( 'data-lazy-loaded', '' );
+                               element.removeAttribute( 'data-src' );
+                       }
+               } );
+
+               // Media elements with <source> children
+               toArray( slide.querySelectorAll( 'video, audio' ) ).forEach( 
function( media ) {
+                       var sources = 0;
+
+                       toArray( media.querySelectorAll( 'source[data-src]' ) 
).forEach( function( source ) {
+                               source.setAttribute( 'src', 
source.getAttribute( 'data-src' ) );
+                               source.removeAttribute( 'data-src' );
+                               source.setAttribute( 'data-lazy-loaded', '' );
+                               sources += 1;
+                       } );
+
+                       // If we rewrote sources for this video/audio element, 
we need
+                       // to manually tell it to load from its new origin
+                       if( sources > 0 ) {
+                               media.load();
+                       }
+               } );
+
+
+               // Show the corresponding background element
+               var background = slide.slideBackgroundElement;
+               if( background ) {
+                       background.style.display = 'block';
+
+                       var backgroundContent = 
slide.slideBackgroundContentElement;
+
+                       // If the background contains media, load it
+                       if( background.hasAttribute( 'data-loaded' ) === false 
) {
+                               background.setAttribute( 'data-loaded', 'true' 
);
+
+                               var backgroundImage = slide.getAttribute( 
'data-background-image' ),
+                                       backgroundVideo = slide.getAttribute( 
'data-background-video' ),
+                                       backgroundVideoLoop = 
slide.hasAttribute( 'data-background-video-loop' ),
+                                       backgroundVideoMuted = 
slide.hasAttribute( 'data-background-video-muted' ),
+                                       backgroundIframe = slide.getAttribute( 
'data-background-iframe' );
+
+                               // Images
+                               if( backgroundImage ) {
+                                       backgroundContent.style.backgroundImage 
= 'url('+ encodeURI( backgroundImage ) +')';
+                               }
+                               // Videos
+                               else if ( backgroundVideo && !isSpeakerNotes() 
) {
+                                       var video = document.createElement( 
'video' );
+
+                                       if( backgroundVideoLoop ) {
+                                               video.setAttribute( 'loop', '' 
);
+                                       }
+
+                                       if( backgroundVideoMuted ) {
+                                               video.muted = true;
+                                       }
+
+                                       // Inline video playback works (at 
least in Mobile Safari) as
+                                       // long as the video is muted and the 
`playsinline` attribute is
+                                       // present
+                                       if( isMobileDevice ) {
+                                               video.muted = true;
+                                               video.autoplay = true;
+                                               video.setAttribute( 
'playsinline', '' );
+                                       }
+
+                                       // Support comma separated lists of 
video sources
+                                       backgroundVideo.split( ',' ).forEach( 
function( source ) {
+                                               video.innerHTML += '<source 
src="'+ source +'">';
+                                       } );
+
+                                       backgroundContent.appendChild( video );
+                               }
+                               // Iframes
+                               else if( backgroundIframe && 
options.excludeIframes !== true ) {
+                                       var iframe = document.createElement( 
'iframe' );
+                                       iframe.setAttribute( 'allowfullscreen', 
'' );
+                                       iframe.setAttribute( 
'mozallowfullscreen', '' );
+                                       iframe.setAttribute( 
'webkitallowfullscreen', '' );
+
+                                       // Only load autoplaying content when 
the slide is shown to
+                                       // avoid having it play in the 
background
+                                       if( /autoplay=(1|true|yes)/gi.test( 
backgroundIframe ) ) {
+                                               iframe.setAttribute( 
'data-src', backgroundIframe );
+                                       }
+                                       else {
+                                               iframe.setAttribute( 'src', 
backgroundIframe );
+                                       }
+
+                                       iframe.style.width  = '100%';
+                                       iframe.style.height = '100%';
+                                       iframe.style.maxHeight = '100%';
+                                       iframe.style.maxWidth = '100%';
+
+                                       backgroundContent.appendChild( iframe );
+                               }
+                       }
+
+               }
+
+       }
+
+       /**
+        * Unloads and hides the given slide. This is called when the
+        * slide is moved outside of the configured view distance.
+        *
+        * @param {HTMLElement} slide
+        */
+       function unloadSlide( slide ) {
+
+               // Hide the slide element
+               slide.style.display = 'none';
+
+               // Hide the corresponding background element
+               var background = getSlideBackground( slide );
+               if( background ) {
+                       background.style.display = 'none';
+               }
+
+               // Reset lazy-loaded media elements with src attributes
+               toArray( slide.querySelectorAll( 'video[data-lazy-loaded][src], 
audio[data-lazy-loaded][src], iframe[data-lazy-loaded][src]' ) ).forEach( 
function( element ) {
+                       element.setAttribute( 'data-src', element.getAttribute( 
'src' ) );
+                       element.removeAttribute( 'src' );
+               } );
+
+               // Reset lazy-loaded media elements with <source> children
+               toArray( slide.querySelectorAll( 'video[data-lazy-loaded] 
source[src], audio source[src]' ) ).forEach( function( source ) {
+                       source.setAttribute( 'data-src', source.getAttribute( 
'src' ) );
+                       source.removeAttribute( 'src' );
+               } );
+
+       }
+
+       /**
+        * Determine what available routes there are for navigation.
+        *
+        * @return {{left: boolean, right: boolean, up: boolean, down: boolean}}
+        */
+       function availableRoutes() {
+
+               var horizontalSlides = dom.wrapper.querySelectorAll( 
HORIZONTAL_SLIDES_SELECTOR ),
+                       verticalSlides = dom.wrapper.querySelectorAll( 
VERTICAL_SLIDES_SELECTOR );
+
+               var routes = {
+                       left: indexh > 0,
+                       right: indexh < horizontalSlides.length - 1,
+                       up: indexv > 0,
+                       down: indexv < verticalSlides.length - 1
+               };
+
+               // Looped presentations can always be navigated as long as
+               // there are slides available
+               if( config.loop ) {
+                       if( horizontalSlides.length > 1 ) {
+                               routes.left = true;
+                               routes.right = true;
+                       }
+
+                       if( verticalSlides.length > 1 ) {
+                               routes.up = true;
+                               routes.down = true;
+                       }
+               }
+
+               // Reverse horizontal controls for rtl
+               if( config.rtl ) {
+                       var left = routes.left;
+                       routes.left = routes.right;
+                       routes.right = left;
+               }
+
+               return routes;
+
+       }
+
+       /**
+        * Returns an object describing the available fragment
+        * directions.
+        *
+        * @return {{prev: boolean, next: boolean}}
+        */
+       function availableFragments() {
+
+               if( currentSlide && config.fragments ) {
+                       var fragments = currentSlide.querySelectorAll( 
'.fragment' );
+                       var hiddenFragments = currentSlide.querySelectorAll( 
'.fragment:not(.visible)' );
+
+                       return {
+                               prev: fragments.length - hiddenFragments.length 
> 0,
+                               next: !!hiddenFragments.length
+                       };
+               }
+               else {
+                       return { prev: false, next: false };
+               }
+
+       }
+
+       /**
+        * Enforces origin-specific format rules for embedded media.
+        */
+       function formatEmbeddedContent() {
+
+               var _appendParamToIframeSource = function( sourceAttribute, 
sourceURL, param ) {
+                       toArray( dom.slides.querySelectorAll( 'iframe['+ 
sourceAttribute +'*="'+ sourceURL +'"]' ) ).forEach( function( el ) {
+                               var src = el.getAttribute( sourceAttribute );
+                               if( src && src.indexOf( param ) === -1 ) {
+                                       el.setAttribute( sourceAttribute, src + 
( !/\?/.test( src ) ? '?' : '&' ) + param );
+                               }
+                       });
+               };
+
+               // YouTube frames must include "?enablejsapi=1"
+               _appendParamToIframeSource( 'src', 'youtube.com/embed/', 
'enablejsapi=1' );
+               _appendParamToIframeSource( 'data-src', 'youtube.com/embed/', 
'enablejsapi=1' );
+
+               // Vimeo frames must include "?api=1"
+               _appendParamToIframeSource( 'src', 'player.vimeo.com/', 'api=1' 
);
+               _appendParamToIframeSource( 'data-src', 'player.vimeo.com/', 
'api=1' );
+
+       }
+
+       /**
+        * Start playback of any embedded content inside of
+        * the given element.
+        *
+        * @param {HTMLElement} element
+        */
+       function startEmbeddedContent( element ) {
+
+               if( element && !isSpeakerNotes() ) {
+
+                       // Restart GIFs
+                       toArray( element.querySelectorAll( 'img[src$=".gif"]' ) 
).forEach( function( el ) {
+                               // Setting the same unchanged source like this 
was confirmed
+                               // to work in Chrome, FF & Safari
+                               el.setAttribute( 'src', el.getAttribute( 'src' 
) );
+                       } );
+
+                       // HTML5 media elements
+                       toArray( element.querySelectorAll( 'video, audio' ) 
).forEach( function( el ) {
+                               if( closestParent( el, '.fragment' ) && 
!closestParent( el, '.fragment.visible' ) ) {
+                                       return;
+                               }
+
+                               // Prefer an explicit global autoplay setting
+                               var autoplay = config.autoPlayMedia;
+
+                               // If no global setting is available, fall back 
on the element's
+                               // own autoplay setting
+                               if( typeof autoplay !== 'boolean' ) {
+                                       autoplay = el.hasAttribute( 
'data-autoplay' ) || !!closestParent( el, '.slide-background' );
+                               }
+
+                               if( autoplay && typeof el.play === 'function' ) 
{
+
+                                       // If the media is ready, start playback
+                                       if( el.readyState > 1 ) {
+                                               startEmbeddedMedia( { target: 
el } );
+                                       }
+                                       // Mobile devices never fire a loaded 
event so instead
+                                       // of waiting, we initiate playback
+                                       else if( isMobileDevice ) {
+                                               var promise = el.play();
+
+                                               // If autoplay does not work, 
ensure that the controls are visible so
+                                               // that the viewer can start 
the media on their own
+                                               if( promise && typeof 
promise.catch === 'function' && el.controls === false ) {
+                                                       promise.catch( 
function() {
+                                                               el.controls = 
true;
+
+                                                               // Once the 
video does start playing, hide the controls again
+                                                               
el.addEventListener( 'play', function() {
+                                                                       
el.controls = false;
+                                                               } );
+                                                       } );
+                                               }
+                                       }
+                                       // If the media isn't loaded, wait 
before playing
+                                       else {
+                                               el.removeEventListener( 
'loadeddata', startEmbeddedMedia ); // remove first to avoid dupes
+                                               el.addEventListener( 
'loadeddata', startEmbeddedMedia );
+                                       }
+
+                               }
+                       } );
+
+                       // Normal iframes
+                       toArray( element.querySelectorAll( 'iframe[src]' ) 
).forEach( function( el ) {
+                               if( closestParent( el, '.fragment' ) && 
!closestParent( el, '.fragment.visible' ) ) {
+                                       return;
+                               }
+
+                               startEmbeddedIframe( { target: el } );
+                       } );
+
+                       // Lazy loading iframes
+                       toArray( element.querySelectorAll( 'iframe[data-src]' ) 
).forEach( function( el ) {
+                               if( closestParent( el, '.fragment' ) && 
!closestParent( el, '.fragment.visible' ) ) {
+                                       return;
+                               }
+
+                               if( el.getAttribute( 'src' ) !== 
el.getAttribute( 'data-src' ) ) {
+                                       el.removeEventListener( 'load', 
startEmbeddedIframe ); // remove first to avoid dupes
+                                       el.addEventListener( 'load', 
startEmbeddedIframe );
+                                       el.setAttribute( 'src', 
el.getAttribute( 'data-src' ) );
+                               }
+                       } );
+
+               }
+
+       }
+
+       /**
+        * Starts playing an embedded video/audio element after
+        * it has finished loading.
+        *
+        * @param {object} event
+        */
+       function startEmbeddedMedia( event ) {
+
+               var isAttachedToDOM = !!closestParent( event.target, 'html' ),
+                       isVisible               = !!closestParent( 
event.target, '.present' );
+
+               if( isAttachedToDOM && isVisible ) {
+                       event.target.currentTime = 0;
+                       event.target.play();
+               }
+
+               event.target.removeEventListener( 'loadeddata', 
startEmbeddedMedia );
+
+       }
+
+       /**
+        * "Starts" the content of an embedded iframe using the
+        * postMessage API.
+        *
+        * @param {object} event
+        */
+       function startEmbeddedIframe( event ) {
+
+               var iframe = event.target;
+
+               if( iframe && iframe.contentWindow ) {
+
+                       var isAttachedToDOM = !!closestParent( event.target, 
'html' ),
+                               isVisible               = !!closestParent( 
event.target, '.present' );
+
+                       if( isAttachedToDOM && isVisible ) {
+
+                               // Prefer an explicit global autoplay setting
+                               var autoplay = config.autoPlayMedia;
+
+                               // If no global setting is available, fall back 
on the element's
+                               // own autoplay setting
+                               if( typeof autoplay !== 'boolean' ) {
+                                       autoplay = iframe.hasAttribute( 
'data-autoplay' ) || !!closestParent( iframe, '.slide-background' );
+                               }
+
+                               // YouTube postMessage API
+                               if( /youtube\.com\/embed\//.test( 
iframe.getAttribute( 'src' ) ) && autoplay ) {
+                                       iframe.contentWindow.postMessage( 
'{"event":"command","func":"playVideo","args":""}', '*' );
+                               }
+                               // Vimeo postMessage API
+                               else if( /player\.vimeo\.com\//.test( 
iframe.getAttribute( 'src' ) ) && autoplay ) {
+                                       iframe.contentWindow.postMessage( 
'{"method":"play"}', '*' );
+                               }
+                               // Generic postMessage API
+                               else {
+                                       iframe.contentWindow.postMessage( 
'slide:start', '*' );
+                               }
+
+                       }
+
+               }
+
+       }
+
+       /**
+        * Stop playback of any embedded content inside of
+        * the targeted slide.
+        *
+        * @param {HTMLElement} element
+        */
+       function stopEmbeddedContent( element, options ) {
+
+               options = extend( {
+                       // Defaults
+                       unloadIframes: true
+               }, options || {} );
+
+               if( element && element.parentNode ) {
+                       // HTML5 media elements
+                       toArray( element.querySelectorAll( 'video, audio' ) 
).forEach( function( el ) {
+                               if( !el.hasAttribute( 'data-ignore' ) && typeof 
el.pause === 'function' ) {
+                                       
el.setAttribute('data-paused-by-reveal', '');
+                                       el.pause();
+                               }
+                       } );
+
+                       // Generic postMessage API for non-lazy loaded iframes
+                       toArray( element.querySelectorAll( 'iframe' ) 
).forEach( function( el ) {
+                               if( el.contentWindow ) 
el.contentWindow.postMessage( 'slide:stop', '*' );
+                               el.removeEventListener( 'load', 
startEmbeddedIframe );
+                       });
+
+                       // YouTube postMessage API
+                       toArray( element.querySelectorAll( 
'iframe[src*="youtube.com/embed/"]' ) ).forEach( function( el ) {
+                               if( !el.hasAttribute( 'data-ignore' ) && 
el.contentWindow && typeof el.contentWindow.postMessage === 'function' ) {
+                                       el.contentWindow.postMessage( 
'{"event":"command","func":"pauseVideo","args":""}', '*' );
+                               }
+                       });
+
+                       // Vimeo postMessage API
+                       toArray( element.querySelectorAll( 
'iframe[src*="player.vimeo.com/"]' ) ).forEach( function( el ) {
+                               if( !el.hasAttribute( 'data-ignore' ) && 
el.contentWindow && typeof el.contentWindow.postMessage === 'function' ) {
+                                       el.contentWindow.postMessage( 
'{"method":"pause"}', '*' );
+                               }
+                       });
+
+                       if( options.unloadIframes === true ) {
+                               // Unload lazy-loaded iframes
+                               toArray( element.querySelectorAll( 
'iframe[data-src]' ) ).forEach( function( el ) {
+                                       // Only removing the src doesn't 
actually unload the frame
+                                       // in all browsers (Firefox) so we set 
it to blank first
+                                       el.setAttribute( 'src', 'about:blank' );
+                                       el.removeAttribute( 'src' );
+                               } );
+                       }
+               }
+
+       }
+
+       /**
+        * Returns the number of past slides. This can be used as a global
+        * flattened index for slides.
+        *
+        * @return {number} Past slide count
+        */
+       function getSlidePastCount() {
+
+               var horizontalSlides = toArray( dom.wrapper.querySelectorAll( 
HORIZONTAL_SLIDES_SELECTOR ) );
+
+               // The number of past slides
+               var pastCount = 0;
+
+               // Step through all slides and count the past ones
+               mainLoop: for( var i = 0; i < horizontalSlides.length; i++ ) {
+
+                       var horizontalSlide = horizontalSlides[i];
+                       var verticalSlides = toArray( 
horizontalSlide.querySelectorAll( 'section' ) );
+
+                       for( var j = 0; j < verticalSlides.length; j++ ) {
+
+                               // Stop as soon as we arrive at the present
+                               if( verticalSlides[j].classList.contains( 
'present' ) ) {
+                                       break mainLoop;
+                               }
+
+                               pastCount++;
+
+                       }
+
+                       // Stop as soon as we arrive at the present
+                       if( horizontalSlide.classList.contains( 'present' ) ) {
+                               break;
+                       }
+
+                       // Don't count the wrapping section for vertical slides
+                       if( horizontalSlide.classList.contains( 'stack' ) === 
false ) {
+                               pastCount++;
+                       }
+
+               }
+
+               return pastCount;
+
+       }
+
+       /**
+        * Returns a value ranging from 0-1 that represents
+        * how far into the presentation we have navigated.
+        *
+        * @return {number}
+        */
+       function getProgress() {
+
+               // The number of past and total slides
+               var totalCount = getTotalSlides();
+               var pastCount = getSlidePastCount();
+
+               if( currentSlide ) {
+
+                       var allFragments = currentSlide.querySelectorAll( 
'.fragment' );
+
+                       // If there are fragments in the current slide those 
should be
+                       // accounted for in the progress.
+                       if( allFragments.length > 0 ) {
+                               var visibleFragments = 
currentSlide.querySelectorAll( '.fragment.visible' );
+
+                               // This value represents how big a portion of 
the slide progress
+                               // that is made up by its fragments (0-1)
+                               var fragmentWeight = 0.9;
+
+                               // Add fragment progress to the past slide count
+                               pastCount += ( visibleFragments.length / 
allFragments.length ) * fragmentWeight;
+                       }
+
+               }
+
+               return Math.min( pastCount / ( totalCount - 1 ), 1 );
+
+       }
+
+       /**
+        * Checks if this presentation is running inside of the
+        * speaker notes window.
+        *
+        * @return {boolean}
+        */
+       function isSpeakerNotes() {
+
+               return !!window.location.search.match( /receiver/gi );
+
+       }
+
+       /**
+        * Reads the current URL (hash) and navigates accordingly.
+        */
+       function readURL() {
+
+               var hash = window.location.hash;
+
+               // Attempt to parse the hash as either an index or name
+               var bits = hash.slice( 2 ).split( '/' ),
+                       name = hash.replace( /#|\//gi, '' );
+
+               // If the first bit is not fully numeric and there is a name we
+               // can assume that this is a named link
+               if( !/^[0-9]*$/.test( bits[0] ) && name.length ) {
+                       var element;
+
+                       // Ensure the named link is a valid HTML ID attribute
+                       try {
+                               element = document.getElementById( 
decodeURIComponent( name ) );
+                       }
+                       catch ( error ) { }
+
+                       // Ensure that we're not already on a slide with the 
same name
+                       var isSameNameAsCurrentSlide = currentSlide ? 
currentSlide.getAttribute( 'id' ) === name : false;
+
+                       if( element ) {
+                               // If the slide exists and is not the current 
slide...
+                               if ( !isSameNameAsCurrentSlide ) {
+                                       // ...find the position of the named 
slide and navigate to it
+                                       var indices = 
Reveal.getIndices(element);
+                                       slide(indices.h, indices.v);
+                               }
+                       }
+                       // If the slide doesn't exist, navigate to the current 
slide
+                       else {
+                               slide( indexh || 0, indexv || 0 );
+                       }
+               }
+               else {
+                       var hashIndexBase = config.hashOneBasedIndex ? 1 : 0;
+
+                       // Read the index components of the hash
+                       var h = ( parseInt( bits[0], 10 ) - hashIndexBase ) || 
0,
+                               v = ( parseInt( bits[1], 10 ) - hashIndexBase ) 
|| 0,
+                               f;
+
+                       if( config.fragmentInURL ) {
+                               f = parseInt( bits[2], 10 );
+                               if( isNaN( f ) ) {
+                                       f = undefined;
+                               }
+                       }
+
+                       if( h !== indexh || v !== indexv || f !== undefined ) {
+                               slide( h, v, f );
+                       }
+               }
+
+       }
+
+       /**
+        * Updates the page URL (hash) to reflect the current
+        * state.
+        *
+        * @param {number} delay The time in ms to wait before
+        * writing the hash
+        */
+       function writeURL( delay ) {
+
+               // Make sure there's never more than one timeout running
+               clearTimeout( writeURLTimeout );
+
+               // If a delay is specified, timeout this call
+               if( typeof delay === 'number' ) {
+                       writeURLTimeout = setTimeout( writeURL, delay );
+               }
+               else if( currentSlide ) {
+                       // If we're configured to push to history OR the history
+                       // API is not avaialble.
+                       if( config.history || !window.history ) {
+                               window.location.hash = locationHash();
+                       }
+                       // If we're configured to reflect the current slide in 
the
+                       // URL without pushing to history.
+                       else if( config.hash ) {
+                               window.history.replaceState( null, null, '#' + 
locationHash() );
+                       }
+                       // If history and hash are both disabled, a hash may 
still
+                       // be added to the URL by clicking on a href with a hash
+                       // target. Counter this by always removing the hash.
+                       else {
+                               window.history.replaceState( null, null, 
window.location.pathname + window.location.search );
+                       }
+               }
+
+       }
+       /**
+        * Retrieves the h/v location and fragment of the current,
+        * or specified, slide.
+        *
+        * @param {HTMLElement} [slide] If specified, the returned
+        * index will be for this slide rather than the currently
+        * active one
+        *
+        * @return {{h: number, v: number, f: number}}
+        */
+       function getIndices( slide ) {
+
+               // By default, return the current indices
+               var h = indexh,
+                       v = indexv,
+                       f;
+
+               // If a slide is specified, return the indices of that slide
+               if( slide ) {
+                       var isVertical = isVerticalSlide( slide );
+                       var slideh = isVertical ? slide.parentNode : slide;
+
+                       // Select all horizontal slides
+                       var horizontalSlides = toArray( 
dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) );
+
+                       // Now that we know which the horizontal slide is, get 
its index
+                       h = Math.max( horizontalSlides.indexOf( slideh ), 0 );
+
+                       // Assume we're not vertical
+                       v = undefined;
+
+                       // If this is a vertical slide, grab the vertical index
+                       if( isVertical ) {
+                               v = Math.max( toArray( 
slide.parentNode.querySelectorAll( 'section' ) ).indexOf( slide ), 0 );
+                       }
+               }
+
+               if( !slide && currentSlide ) {
+                       var hasFragments = currentSlide.querySelectorAll( 
'.fragment' ).length > 0;
+                       if( hasFragments ) {
+                               var currentFragment = 
currentSlide.querySelector( '.current-fragment' );
+                               if( currentFragment && 
currentFragment.hasAttribute( 'data-fragment-index' ) ) {
+                                       f = parseInt( 
currentFragment.getAttribute( 'data-fragment-index' ), 10 );
+                               }
+                               else {
+                                       f = currentSlide.querySelectorAll( 
'.fragment.visible' ).length - 1;
+                               }
+                       }
+               }
+
+               return { h: h, v: v, f: f };
+
+       }
+
+       /**
+        * Retrieves all slides in this presentation.
+        */
+       function getSlides() {
+
+               return toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR + 
':not(.stack)' ));
+
+       }
+
+       /**
+        * Returns an array of objects where each object represents the
+        * attributes on its respective slide.
+        */
+       function getSlidesAttributes() {
+
+               return getSlides().map( function( slide ) {
+
+                       var attributes = {};
+                       for( var i = 0; i < slide.attributes.length; i++ ) {
+                               var attribute = slide.attributes[ i ];
+                               attributes[ attribute.name ] = attribute.value;
+                       }
+                       return attributes;
+
+               } );
+
+       }
+
+       /**
+        * Retrieves the total number of slides in this presentation.
+        *
+        * @return {number}
+        */
+       function getTotalSlides() {
+
+               return getSlides().length;
+
+       }
+
+       /**
+        * Returns the slide element matching the specified index.
+        *
+        * @return {HTMLElement}
+        */
+       function getSlide( x, y ) {
+
+               var horizontalSlide = dom.wrapper.querySelectorAll( 
HORIZONTAL_SLIDES_SELECTOR )[ x ];
+               var verticalSlides = horizontalSlide && 
horizontalSlide.querySelectorAll( 'section' );
+
+               if( verticalSlides && verticalSlides.length && typeof y === 
'number' ) {
+                       return verticalSlides ? verticalSlides[ y ] : undefined;
+               }
+
+               return horizontalSlide;
+
+       }
+
+       /**
+        * Returns the background element for the given slide.
+        * All slides, even the ones with no background properties
+        * defined, have a background element so as long as the
+        * index is valid an element will be returned.
+        *
+        * @param {mixed} x Horizontal background index OR a slide
+        * HTML element
+        * @param {number} y Vertical background index
+        * @return {(HTMLElement[]|*)}
+        */
+       function getSlideBackground( x, y ) {
+
+               var slide = typeof x === 'number' ? getSlide( x, y ) : x;
+               if( slide ) {
+                       return slide.slideBackgroundElement;
+               }
+
+               return undefined;
+
+       }
+
+       /**
+        * Retrieves the speaker notes from a slide. Notes can be
+        * defined in two ways:
+        * 1. As a data-notes attribute on the slide <section>
+        * 2. As an <aside class="notes"> inside of the slide
+        *
+        * @param {HTMLElement} [slide=currentSlide]
+        * @return {(string|null)}
+        */
+       function getSlideNotes( slide ) {
+
+               // Default to the current slide
+               slide = slide || currentSlide;
+
+               // Notes can be specified via the data-notes attribute...
+               if( slide.hasAttribute( 'data-notes' ) ) {
+                       return slide.getAttribute( 'data-notes' );
+               }
+
+               // ... or using an <aside class="notes"> element
+               var notesElement = slide.querySelector( 'aside.notes' );
+               if( notesElement ) {
+                       return notesElement.innerHTML;
+               }
+
+               return null;
+
+       }
+
+       /**
+        * Retrieves the current state of the presentation as
+        * an object. This state can then be restored at any
+        * time.
+        *
+        * @return {{indexh: number, indexv: number, indexf: number, paused: 
boolean, overview: boolean}}
+        */
+       function getState() {
+
+               var indices = getIndices();
+
+               return {
+                       indexh: indices.h,
+                       indexv: indices.v,
+                       indexf: indices.f,
+                       paused: isPaused(),
+                       overview: isOverview()
+               };
+
+       }
+
+       /**
+        * Restores the presentation to the given state.
+        *
+        * @param {object} state As generated by getState()
+        * @see {@link getState} generates the parameter `state`
+        */
+       function setState( state ) {
+
+               if( typeof state === 'object' ) {
+                       slide( deserialize( state.indexh ), deserialize( 
state.indexv ), deserialize( state.indexf ) );
+
+                       var pausedFlag = deserialize( state.paused ),
+                               overviewFlag = deserialize( state.overview );
+
+                       if( typeof pausedFlag === 'boolean' && pausedFlag !== 
isPaused() ) {
+                               togglePause( pausedFlag );
+                       }
+
+                       if( typeof overviewFlag === 'boolean' && overviewFlag 
!== isOverview() ) {
+                               toggleOverview( overviewFlag );
+                       }
+               }
+
+       }
+
+       /**
+        * Return a sorted fragments list, ordered by an increasing
+        * "data-fragment-index" attribute.
+        *
+        * Fragments will be revealed in the order that they are returned by
+        * this function, so you can use the index attributes to control the
+        * order of fragment appearance.
+        *
+        * To maintain a sensible default fragment order, fragments are presumed
+        * to be passed in document order. This function adds a "fragment-index"
+        * attribute to each node if such an attribute is not already present,
+        * and sets that attribute to an integer value which is the position of
+        * the fragment within the fragments list.
+        *
+        * @param {object[]|*} fragments
+        * @param {boolean} grouped If true the returned array will contain
+        * nested arrays for all fragments with the same index
+        * @return {object[]} sorted Sorted array of fragments
+        */
+       function sortFragments( fragments, grouped ) {
+
+               fragments = toArray( fragments );
+
+               var ordered = [],
+                       unordered = [],
+                       sorted = [];
+
+               // Group ordered and unordered elements
+               fragments.forEach( function( fragment, i ) {
+                       if( fragment.hasAttribute( 'data-fragment-index' ) ) {
+                               var index = parseInt( fragment.getAttribute( 
'data-fragment-index' ), 10 );
+
+                               if( !ordered[index] ) {
+                                       ordered[index] = [];
+                               }
+
+                               ordered[index].push( fragment );
+                       }
+                       else {
+                               unordered.push( [ fragment ] );
+                       }
+               } );
+
+               // Append fragments without explicit indices in their
+               // DOM order
+               ordered = ordered.concat( unordered );
+
+               // Manually count the index up per group to ensure there
+               // are no gaps
+               var index = 0;
+
+               // Push all fragments in their sorted order to an array,
+               // this flattens the groups
+               ordered.forEach( function( group ) {
+                       group.forEach( function( fragment ) {
+                               sorted.push( fragment );
+                               fragment.setAttribute( 'data-fragment-index', 
index );
+                       } );
+
+                       index ++;
+               } );
+
+               return grouped === true ? ordered : sorted;
+
+       }
+
+       /**
+        * Refreshes the fragments on the current slide so that they
+        * have the appropriate classes (.visible + .current-fragment).
+        *
+        * @param {number} [index] The index of the current fragment
+        * @param {array} [fragments] Array containing all fragments
+        * in the current slide
+        *
+        * @return {{shown: array, hidden: array}}
+        */
+       function updateFragments( index, fragments ) {
+
+               var changedFragments = {
+                       shown: [],
+                       hidden: []
+               };
+
+               if( currentSlide && config.fragments ) {
+
+                       fragments = fragments || sortFragments( 
currentSlide.querySelectorAll( '.fragment' ) );
+
+                       if( fragments.length ) {
+
+                               if( typeof index !== 'number' ) {
+                                       var currentFragment = sortFragments( 
currentSlide.querySelectorAll( '.fragment.visible' ) ).pop();
+                                       if( currentFragment ) {
+                                               index = parseInt( 
currentFragment.getAttribute( 'data-fragment-index' ) || 0, 10 );
+                                       }
+                               }
+
+                               toArray( fragments ).forEach( function( el, i ) 
{
+
+                                       if( el.hasAttribute( 
'data-fragment-index' ) ) {
+                                               i = parseInt( el.getAttribute( 
'data-fragment-index' ), 10 );
+                                       }
+
+                                       // Visible fragments
+                                       if( i <= index ) {
+                                               if( !el.classList.contains( 
'visible' ) ) changedFragments.shown.push( el );
+                                               el.classList.add( 'visible' );
+                                               el.classList.remove( 
'current-fragment' );
+
+                                               // Announce the fragments one 
by one to the Screen Reader
+                                               dom.statusDiv.textContent = 
getStatusText( el );
+
+                                               if( i === index ) {
+                                                       el.classList.add( 
'current-fragment' );
+                                                       startEmbeddedContent( 
el );
+                                               }
+                                       }
+                                       // Hidden fragments
+                                       else {
+                                               if( el.classList.contains( 
'visible' ) ) changedFragments.hidden.push( el );
+                                               el.classList.remove( 'visible' 
);
+                                               el.classList.remove( 
'current-fragment' );
+                                       }
+
+                               } );
+
+                       }
+
+               }
+
+               return changedFragments;
+
+       }
+
+       /**
+        * Navigate to the specified slide fragment.
+        *
+        * @param {?number} index The index of the fragment that
+        * should be shown, -1 means all are invisible
+        * @param {number} offset Integer offset to apply to the
+        * fragment index
+        *
+        * @return {boolean} true if a change was made in any
+        * fragments visibility as part of this call
+        */
+       function navigateFragment( index, offset ) {
+
+               if( currentSlide && config.fragments ) {
+
+                       var fragments = sortFragments( 
currentSlide.querySelectorAll( '.fragment' ) );
+                       if( fragments.length ) {
+
+                               // If no index is specified, find the current
+                               if( typeof index !== 'number' ) {
+                                       var lastVisibleFragment = 
sortFragments( currentSlide.querySelectorAll( '.fragment.visible' ) ).pop();
+
+                                       if( lastVisibleFragment ) {
+                                               index = parseInt( 
lastVisibleFragment.getAttribute( 'data-fragment-index' ) || 0, 10 );
+                                       }
+                                       else {
+                                               index = -1;
+                                       }
+                               }
+
+                               // If an offset is specified, apply it to the 
index
+                               if( typeof offset === 'number' ) {
+                                       index += offset;
+                               }
+
+                               var changedFragments = updateFragments( index, 
fragments );
+
+                               if( changedFragments.hidden.length ) {
+                                       dispatchEvent( 'fragmenthidden', { 
fragment: changedFragments.hidden[0], fragments: changedFragments.hidden } );
+                               }
+
+                               if( changedFragments.shown.length ) {
+                                       dispatchEvent( 'fragmentshown', { 
fragment: changedFragments.shown[0], fragments: changedFragments.shown } );
+                               }
+
+                               updateControls();
+                               updateProgress();
+
+                               if( config.fragmentInURL ) {
+                                       writeURL();
+                               }
+
+                               return !!( changedFragments.shown.length || 
changedFragments.hidden.length );
+
+                       }
+
+               }
+
+               return false;
+
+       }
+
+       /**
+        * Navigate to the next slide fragment.
+        *
+        * @return {boolean} true if there was a next fragment,
+        * false otherwise
+        */
+       function nextFragment() {
+
+               return navigateFragment( null, 1 );
+
+       }
+
+       /**
+        * Navigate to the previous slide fragment.
+        *
+        * @return {boolean} true if there was a previous fragment,
+        * false otherwise
+        */
+       function previousFragment() {
+
+               return navigateFragment( null, -1 );
+
+       }
+
+       /**
+        * Cues a new automated slide if enabled in the config.
+        */
+       function cueAutoSlide() {
+
+               cancelAutoSlide();
+
+               if( currentSlide && config.autoSlide !== false ) {
+
+                       var fragment = currentSlide.querySelector( 
'.current-fragment' );
+
+                       // When the slide first appears there is no "current" 
fragment so
+                       // we look for a data-autoslide timing on the first 
fragment
+                       if( !fragment ) fragment = currentSlide.querySelector( 
'.fragment' );
+
+                       var fragmentAutoSlide = fragment ? 
fragment.getAttribute( 'data-autoslide' ) : null;
+                       var parentAutoSlide = currentSlide.parentNode ? 
currentSlide.parentNode.getAttribute( 'data-autoslide' ) : null;
+                       var slideAutoSlide = currentSlide.getAttribute( 
'data-autoslide' );
+
+                       // Pick value in the following priority order:
+                       // 1. Current fragment's data-autoslide
+                       // 2. Current slide's data-autoslide
+                       // 3. Parent slide's data-autoslide
+                       // 4. Global autoSlide setting
+                       if( fragmentAutoSlide ) {
+                               autoSlide = parseInt( fragmentAutoSlide, 10 );
+                       }
+                       else if( slideAutoSlide ) {
+                               autoSlide = parseInt( slideAutoSlide, 10 );
+                       }
+                       else if( parentAutoSlide ) {
+                               autoSlide = parseInt( parentAutoSlide, 10 );
+                       }
+                       else {
+                               autoSlide = config.autoSlide;
+                       }
+
+                       // If there are media elements with data-autoplay,
+                       // automatically set the autoSlide duration to the
+                       // length of that media. Not applicable if the slide
+                       // is divided up into fragments.
+                       // playbackRate is accounted for in the duration.
+                       if( currentSlide.querySelectorAll( '.fragment' ).length 
=== 0 ) {
+                               toArray( currentSlide.querySelectorAll( 'video, 
audio' ) ).forEach( function( el ) {
+                                       if( el.hasAttribute( 'data-autoplay' ) 
) {
+                                               if( autoSlide && (el.duration * 
1000 / el.playbackRate ) > autoSlide ) {
+                                                       autoSlide = ( 
el.duration * 1000 / el.playbackRate ) + 1000;
+                                               }
+                                       }
+                               } );
+                       }
+
+                       // Cue the next auto-slide if:
+                       // - There is an autoSlide value
+                       // - Auto-sliding isn't paused by the user
+                       // - The presentation isn't paused
+                       // - The overview isn't active
+                       // - The presentation isn't over
+                       if( autoSlide && !autoSlidePaused && !isPaused() && 
!isOverview() && ( !Reveal.isLastSlide() || availableFragments().next || 
config.loop === true ) ) {
+                               autoSlideTimeout = setTimeout( function() {
+                                       typeof config.autoSlideMethod === 
'function' ? config.autoSlideMethod() : navigateNext();
+                                       cueAutoSlide();
+                               }, autoSlide );
+                               autoSlideStartTime = Date.now();
+                       }
+
+                       if( autoSlidePlayer ) {
+                               autoSlidePlayer.setPlaying( autoSlideTimeout 
!== -1 );
+                       }
+
+               }
+
+       }
+
+       /**
+        * Cancels any ongoing request to auto-slide.
+        */
+       function cancelAutoSlide() {
+
+               clearTimeout( autoSlideTimeout );
+               autoSlideTimeout = -1;
+
+       }
+
+       function pauseAutoSlide() {
+
+               if( autoSlide && !autoSlidePaused ) {
+                       autoSlidePaused = true;
+                       dispatchEvent( 'autoslidepaused' );
+                       clearTimeout( autoSlideTimeout );
+
+                       if( autoSlidePlayer ) {
+                               autoSlidePlayer.setPlaying( false );
+                       }
+               }
+
+       }
+
+       function resumeAutoSlide() {
+
+               if( autoSlide && autoSlidePaused ) {
+                       autoSlidePaused = false;
+                       dispatchEvent( 'autoslideresumed' );
+                       cueAutoSlide();
+               }
+
+       }
+
+       function navigateLeft() {
+
+               // Reverse for RTL
+               if( config.rtl ) {
+                       if( ( isOverview() || nextFragment() === false ) && 
availableRoutes().left ) {
+                               slide( indexh + 1, config.navigationMode === 
'grid' ? indexv : undefined );
+                       }
+               }
+               // Normal navigation
+               else if( ( isOverview() || previousFragment() === false ) && 
availableRoutes().left ) {
+                       slide( indexh - 1, config.navigationMode === 'grid' ? 
indexv : undefined );
+               }
+
+       }
+
+       function navigateRight() {
+
+               hasNavigatedRight = true;
+
+               // Reverse for RTL
+               if( config.rtl ) {
+                       if( ( isOverview() || previousFragment() === false ) && 
availableRoutes().right ) {
+                               slide( indexh - 1, config.navigationMode === 
'grid' ? indexv : undefined );
+                       }
+               }
+               // Normal navigation
+               else if( ( isOverview() || nextFragment() === false ) && 
availableRoutes().right ) {
+                       slide( indexh + 1, config.navigationMode === 'grid' ? 
indexv : undefined );
+               }
+
+       }
+
+       function navigateUp() {
+
+               // Prioritize hiding fragments
+               if( ( isOverview() || previousFragment() === false ) && 
availableRoutes().up ) {
+                       slide( indexh, indexv - 1 );
+               }
+
+       }
+
+       function navigateDown() {
+
+               hasNavigatedDown = true;
+
+               // Prioritize revealing fragments
+               if( ( isOverview() || nextFragment() === false ) && 
availableRoutes().down ) {
+                       slide( indexh, indexv + 1 );
+               }
+
+       }
+
+       /**
+        * Navigates backwards, prioritized in the following order:
+        * 1) Previous fragment
+        * 2) Previous vertical slide
+        * 3) Previous horizontal slide
+        */
+       function navigatePrev() {
+
+               // Prioritize revealing fragments
+               if( previousFragment() === false ) {
+                       if( availableRoutes().up ) {
+                               navigateUp();
+                       }
+                       else {
+                               // Fetch the previous horizontal slide, if 
there is one
+                               var previousSlide;
+
+                               if( config.rtl ) {
+                                       previousSlide = toArray( 
dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.future' ) ).pop();
+                               }
+                               else {
+                                       previousSlide = toArray( 
dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.past' ) ).pop();
+                               }
+
+                               if( previousSlide ) {
+                                       var v = ( 
previousSlide.querySelectorAll( 'section' ).length - 1 ) || undefined;
+                                       var h = indexh - 1;
+                                       slide( h, v );
+                               }
+                       }
+               }
+
+       }
+
+       /**
+        * The reverse of #navigatePrev().
+        */
+       function navigateNext() {
+
+               hasNavigatedRight = true;
+               hasNavigatedDown = true;
+
+               // Prioritize revealing fragments
+               if( nextFragment() === false ) {
+
+                       var routes = availableRoutes();
+
+                       // When looping is enabled `routes.down` is always 
available
+                       // so we need a separate check for when we've reached 
the
+                       // end of a stack and should move horizontally
+                       if( routes.down && routes.right && config.loop && 
Reveal.isLastVerticalSlide( currentSlide ) ) {
+                               routes.down = false;
+                       }
+
+                       if( routes.down ) {
+                               navigateDown();
+                       }
+                       else if( config.rtl ) {
+                               navigateLeft();
+                       }
+                       else {
+                               navigateRight();
+                       }
+               }
+
+       }
+
+       /**
+        * Checks if the target element prevents the triggering of
+        * swipe navigation.
+        */
+       function isSwipePrevented( target ) {
+
+               while( target && typeof target.hasAttribute === 'function' ) {
+                       if( target.hasAttribute( 'data-prevent-swipe' ) ) 
return true;
+                       target = target.parentNode;
+               }
+
+               return false;
+
+       }
+
+
+       // 
--------------------------------------------------------------------//
+       // ----------------------------- EVENTS 
-------------------------------//
+       // 
--------------------------------------------------------------------//
+
+       /**
+        * Called by all event handlers that are based on user
+        * input.
+        *
+        * @param {object} [event]
+        */
+       function onUserInput( event ) {
+
+               if( config.autoSlideStoppable ) {
+                       pauseAutoSlide();
+               }
+
+       }
+
+       /**
+        * Called whenever there is mouse input at the document level
+        * to determine if the cursor is active or not.
+        *
+        * @param {object} event
+        */
+       function onDocumentCursorActive( event ) {
+
+               showCursor();
+
+               clearTimeout( cursorInactiveTimeout );
+
+               cursorInactiveTimeout = setTimeout( hideCursor, 
config.hideCursorTime );
+
+       }
+
+       /**
+        * Handler for the document level 'keypress' event.
+        *
+        * @param {object} event
+        */
+       function onDocumentKeyPress( event ) {
+
+               // Check if the pressed key is question mark
+               if( event.shiftKey && event.charCode === 63 ) {
+                       toggleHelp();
+               }
+
+       }
+
+       /**
+        * Handler for the document level 'keydown' event.
+        *
+        * @param {object} event
+        */
+       function onDocumentKeyDown( event ) {
+
+               // If there's a condition specified and it returns false,
+               // ignore this event
+               if( typeof config.keyboardCondition === 'function' && 
config.keyboardCondition(event) === false ) {
+                       return true;
+               }
+
+               // Shorthand
+               var keyCode = event.keyCode;
+
+               // Remember if auto-sliding was paused so we can toggle it
+               var autoSlideWasPaused = autoSlidePaused;
+
+               onUserInput( event );
+
+               // Is there a focused element that could be using the keyboard?
+               var activeElementIsCE = document.activeElement && 
document.activeElement.contentEditable !== 'inherit';
+               var activeElementIsInput = document.activeElement && 
document.activeElement.tagName && /input|textarea/i.test( 
document.activeElement.tagName );
+               var activeElementIsNotes = document.activeElement && 
document.activeElement.className && /speaker-notes/i.test( 
document.activeElement.className);
+
+               // Whitelist specific modified + keycode combinations
+               var prevSlideShortcut = event.shiftKey && event.keyCode === 32;
+               var firstSlideShortcut = ( event.metaKey || event.ctrlKey ) && 
keyCode === 37;
+               var lastSlideShortcut = ( event.metaKey || event.ctrlKey ) && 
keyCode === 39;
+
+               // Prevent all other events when a modifier is pressed
+               var unusedModifier =    !prevSlideShortcut && 
!firstSlideShortcut && !lastSlideShortcut &&
+                                                               ( 
event.shiftKey || event.altKey || event.ctrlKey || event.metaKey );
+
+               // Disregard the event if there's a focused element or a
+               // keyboard modifier key is present
+               if( activeElementIsCE || activeElementIsInput || 
activeElementIsNotes || unusedModifier ) return;
+
+               // While paused only allow resume keyboard events; 'b', 'v', '.'
+               var resumeKeyCodes = [66,86,190,191];
+               var key;
+
+               // Custom key bindings for togglePause should be able to resume
+               if( typeof config.keyboard === 'object' ) {
+                       for( key in config.keyboard ) {
+                               if( config.keyboard[key] === 'togglePause' ) {
+                                       resumeKeyCodes.push( parseInt( key, 10 
) );
+                               }
+                       }
+               }
+
+               if( isPaused() && resumeKeyCodes.indexOf( keyCode ) === -1 ) {
+                       return false;
+               }
+
+               var triggered = false;
+
+               // 1. User defined key bindings
+               if( typeof config.keyboard === 'object' ) {
+
+                       for( key in config.keyboard ) {
+
+                               // Check if this binding matches the pressed key
+                               if( parseInt( key, 10 ) === keyCode ) {
+
+                                       var value = config.keyboard[ key ];
+
+                                       // Callback function
+                                       if( typeof value === 'function' ) {
+                                               value.apply( null, [ event ] );
+                                       }
+                                       // String shortcuts to reveal.js API
+                                       else if( typeof value === 'string' && 
typeof Reveal[ value ] === 'function' ) {
+                                               Reveal[ value ].call();
+                                       }
+
+                                       triggered = true;
+
+                               }
+
+                       }
+
+               }
+
+               // 2. Registered custom key bindings
+               if( triggered === false ) {
+
+                       for( key in registeredKeyBindings ) {
+
+                               // Check if this binding matches the pressed key
+                               if( parseInt( key, 10 ) === keyCode ) {
+
+                                       var action = registeredKeyBindings[ key 
].callback;
+
+                                       // Callback function
+                                       if( typeof action === 'function' ) {
+                                               action.apply( null, [ event ] );
+                                       }
+                                       // String shortcuts to reveal.js API
+                                       else if( typeof action === 'string' && 
typeof Reveal[ action ] === 'function' ) {
+                                               Reveal[ action ].call();
+                                       }
+
+                                       triggered = true;
+                               }
+                       }
+               }
+
+               // 3. System defined key bindings
+               if( triggered === false ) {
+
+                       // Assume true and try to prove false
+                       triggered = true;
+
+                       // P, PAGE UP
+                       if( keyCode === 80 || keyCode === 33 ) {
+                               navigatePrev();
+                       }
+                       // N, PAGE DOWN
+                       else if( keyCode === 78 || keyCode === 34 ) {
+                               navigateNext();
+                       }
+                       // H, LEFT
+                       else if( keyCode === 72 || keyCode === 37 ) {
+                               if( firstSlideShortcut ) {
+                                       slide( 0 );
+                               }
+                               else if( !isOverview() && config.navigationMode 
=== 'linear' ) {
+                                       navigatePrev();
+                               }
+                               else {
+                                       navigateLeft();
+                               }
+                       }
+                       // L, RIGHT
+                       else if( keyCode === 76 || keyCode === 39 ) {
+                               if( lastSlideShortcut ) {
+                                       slide( Number.MAX_VALUE );
+                               }
+                               else if( !isOverview() && config.navigationMode 
=== 'linear' ) {
+                                       navigateNext();
+                               }
+                               else {
+                                       navigateRight();
+                               }
+                       }
+                       // K, UP
+                       else if( keyCode === 75 || keyCode === 38 ) {
+                               if( !isOverview() && config.navigationMode === 
'linear' ) {
+                                       navigatePrev();
+                               }
+                               else {
+                                       navigateUp();
+                               }
+                       }
+                       // J, DOWN
+                       else if( keyCode === 74 || keyCode === 40 ) {
+                               if( !isOverview() && config.navigationMode === 
'linear' ) {
+                                       navigateNext();
+                               }
+                               else {
+                                       navigateDown();
+                               }
+                       }
+                       // HOME
+                       else if( keyCode === 36 ) {
+                               slide( 0 );
+                       }
+                       // END
+                       else if( keyCode === 35 ) {
+                               slide( Number.MAX_VALUE );
+                       }
+                       // SPACE
+                       else if( keyCode === 32 ) {
+                               if( isOverview() ) {
+                                       deactivateOverview();
+                               }
+                               if( event.shiftKey ) {
+                                       navigatePrev();
+                               }
+                               else {
+                                       navigateNext();
+                               }
+                       }
+                       // TWO-SPOT, SEMICOLON, B, V, PERIOD, LOGITECH 
PRESENTER TOOLS "BLACK SCREEN" BUTTON
+                       else if( keyCode === 58 || keyCode === 59 || keyCode 
=== 66 || keyCode === 86 || keyCode === 190 || keyCode === 191 ) {
+                               togglePause();
+                       }
+                       // F
+                       else if( keyCode === 70 ) {
+                               enterFullscreen();
+                       }
+                       // A
+                       else if( keyCode === 65 ) {
+                               if ( config.autoSlideStoppable ) {
+                                       toggleAutoSlide( autoSlideWasPaused );
+                               }
+                       }
+                       else {
+                               triggered = false;
+                       }
+
+               }
+
+               // If the input resulted in a triggered action we should prevent
+               // the browsers default behavior
+               if( triggered ) {
+                       event.preventDefault && event.preventDefault();
+               }
+               // ESC or O key
+               else if ( ( keyCode === 27 || keyCode === 79 ) && 
features.transforms3d ) {
+                       if( dom.overlay ) {
+                               closeOverlay();
+                       }
+                       else {
+                               toggleOverview();
+                       }
+
+                       event.preventDefault && event.preventDefault();
+               }
+
+               // If auto-sliding is enabled we need to cue up
+               // another timeout
+               cueAutoSlide();
+
+       }
+
+       /**
+        * Handler for the 'touchstart' event, enables support for
+        * swipe and pinch gestures.
+        *
+        * @param {object} event
+        */
+       function onTouchStart( event ) {
+
+               if( isSwipePrevented( event.target ) ) return true;
+
+               touch.startX = event.touches[0].clientX;
+               touch.startY = event.touches[0].clientY;
+               touch.startCount = event.touches.length;
+
+       }
+
+       /**
+        * Handler for the 'touchmove' event.
+        *
+        * @param {object} event
+        */
+       function onTouchMove( event ) {
+
+               if( isSwipePrevented( event.target ) ) return true;
+
+               // Each touch should only trigger one action
+               if( !touch.captured ) {
+                       onUserInput( event );
+
+                       var currentX = event.touches[0].clientX;
+                       var currentY = event.touches[0].clientY;
+
+                       // There was only one touch point, look for a swipe
+                       if( event.touches.length === 1 && touch.startCount !== 
2 ) {
+
+                               var deltaX = currentX - touch.startX,
+                                       deltaY = currentY - touch.startY;
+
+                               if( deltaX > touch.threshold && Math.abs( 
deltaX ) > Math.abs( deltaY ) ) {
+                                       touch.captured = true;
+                                       navigateLeft();
+                               }
+                               else if( deltaX < -touch.threshold && Math.abs( 
deltaX ) > Math.abs( deltaY ) ) {
+                                       touch.captured = true;
+                                       navigateRight();
+                               }
+                               else if( deltaY > touch.threshold ) {
+                                       touch.captured = true;
+                                       navigateUp();
+                               }
+                               else if( deltaY < -touch.threshold ) {
+                                       touch.captured = true;
+                                       navigateDown();
+                               }
+
+                               // If we're embedded, only block touch events 
if they have
+                               // triggered an action
+                               if( config.embedded ) {
+                                       if( touch.captured || isVerticalSlide( 
currentSlide ) ) {
+                                               event.preventDefault();
+                                       }
+                               }
+                               // Not embedded? Block them all to avoid 
needless tossing
+                               // around of the viewport in iOS
+                               else {
+                                       event.preventDefault();
+                               }
+
+                       }
+               }
+               // There's a bug with swiping on some Android devices unless
+               // the default action is always prevented
+               else if( UA.match( /android/gi ) ) {
+                       event.preventDefault();
+               }
+
+       }
+
+       /**
+        * Handler for the 'touchend' event.
+        *
+        * @param {object} event
+        */
+       function onTouchEnd( event ) {
+
+               touch.captured = false;
+
+       }
+
+       /**
+        * Convert pointer down to touch start.
+        *
+        * @param {object} event
+        */
+       function onPointerDown( event ) {
+
+               if( event.pointerType === event.MSPOINTER_TYPE_TOUCH || 
event.pointerType === "touch" ) {
+                       event.touches = [{ clientX: event.clientX, clientY: 
event.clientY }];
+                       onTouchStart( event );
+               }
+
+       }
+
+       /**
+        * Convert pointer move to touch move.
+        *
+        * @param {object} event
+        */
+       function onPointerMove( event ) {
+
+               if( event.pointerType === event.MSPOINTER_TYPE_TOUCH || 
event.pointerType === "touch" )  {
+                       event.touches = [{ clientX: event.clientX, clientY: 
event.clientY }];
+                       onTouchMove( event );
+               }
+
+       }
+
+       /**
+        * Convert pointer up to touch end.
+        *
+        * @param {object} event
+        */
+       function onPointerUp( event ) {
+
+               if( event.pointerType === event.MSPOINTER_TYPE_TOUCH || 
event.pointerType === "touch" )  {
+                       event.touches = [{ clientX: event.clientX, clientY: 
event.clientY }];
+                       onTouchEnd( event );
+               }
+
+       }
+
+       /**
+        * Handles mouse wheel scrolling, throttled to avoid skipping
+        * multiple slides.
+        *
+        * @param {object} event
+        */
+       function onDocumentMouseScroll( event ) {
+
+               if( Date.now() - lastMouseWheelStep > 600 ) {
+
+                       lastMouseWheelStep = Date.now();
+
+                       var delta = event.detail || -event.wheelDelta;
+                       if( delta > 0 ) {
+                               navigateNext();
+                       }
+                       else if( delta < 0 ) {
+                               navigatePrev();
+                       }
+
+               }
+
+       }
+
+       /**
+        * Clicking on the progress bar results in a navigation to the
+        * closest approximate horizontal slide using this equation:
+        *
+        * ( clickX / presentationWidth ) * numberOfSlides
+        *
+        * @param {object} event
+        */
+       function onProgressClicked( event ) {
+
+               onUserInput( event );
+
+               event.preventDefault();
+
+               var slidesTotal = toArray( dom.wrapper.querySelectorAll( 
HORIZONTAL_SLIDES_SELECTOR ) ).length;
+               var slideIndex = Math.floor( ( event.clientX / 
dom.wrapper.offsetWidth ) * slidesTotal );
+
+               if( config.rtl ) {
+                       slideIndex = slidesTotal - slideIndex;
+               }
+
+               slide( slideIndex );
+
+       }
+
+       /**
+        * Event handler for navigation control buttons.
+        */
+       function onNavigateLeftClicked( event ) { event.preventDefault(); 
onUserInput(); config.navigationMode === 'linear' ? navigatePrev() : 
navigateLeft(); }
+       function onNavigateRightClicked( event ) { event.preventDefault(); 
onUserInput(); config.navigationMode === 'linear' ? navigateNext() : 
navigateRight(); }
+       function onNavigateUpClicked( event ) { event.preventDefault(); 
onUserInput(); navigateUp(); }
+       function onNavigateDownClicked( event ) { event.preventDefault(); 
onUserInput(); navigateDown(); }
+       function onNavigatePrevClicked( event ) { event.preventDefault(); 
onUserInput(); navigatePrev(); }
+       function onNavigateNextClicked( event ) { event.preventDefault(); 
onUserInput(); navigateNext(); }
+
+       /**
+        * Handler for the window level 'hashchange' event.
+        *
+        * @param {object} [event]
+        */
+       function onWindowHashChange( event ) {
+
+               readURL();
+
+       }
+
+       /**
+        * Handler for the window level 'resize' event.
+        *
+        * @param {object} [event]
+        */
+       function onWindowResize( event ) {
+
+               layout();
+
+       }
+
+       /**
+        * Handle for the window level 'visibilitychange' event.
+        *
+        * @param {object} [event]
+        */
+       function onPageVisibilityChange( event ) {
+
+               var isHidden =  document.webkitHidden ||
+                                               document.msHidden ||
+                                               document.hidden;
+
+               // If, after clicking a link or similar and we're coming back,
+               // focus the document.body to ensure we can use keyboard 
shortcuts
+               if( isHidden === false && document.activeElement !== 
document.body ) {
+                       // Not all elements support .blur() - SVGs among them.
+                       if( typeof document.activeElement.blur === 'function' ) 
{
+                               document.activeElement.blur();
+                       }
+                       document.body.focus();
+               }
+
+       }
+
+       /**
+        * Invoked when a slide is and we're in the overview.
+        *
+        * @param {object} event
+        */
+       function onOverviewSlideClicked( event ) {
+
+               // TODO There's a bug here where the event listeners are not
+               // removed after deactivating the overview.
+               if( eventsAreBound && isOverview() ) {
+                       event.preventDefault();
+
+                       var element = event.target;
+
+                       while( element && !element.nodeName.match( /section/gi 
) ) {
+                               element = element.parentNode;
+                       }
+
+                       if( element && !element.classList.contains( 'disabled' 
) ) {
+
+                               deactivateOverview();
+
+                               if( element.nodeName.match( /section/gi ) ) {
+                                       var h = parseInt( element.getAttribute( 
'data-index-h' ), 10 ),
+                                               v = parseInt( 
element.getAttribute( 'data-index-v' ), 10 );
+
+                                       slide( h, v );
+                               }
+
+                       }
+               }
+
+       }
+
+       /**
+        * Handles clicks on links that are set to preview in the
+        * iframe overlay.
+        *
+        * @param {object} event
+        */
+       function onPreviewLinkClicked( event ) {
+
+               if( event.currentTarget && event.currentTarget.hasAttribute( 
'href' ) ) {
+                       var url = event.currentTarget.getAttribute( 'href' );
+                       if( url ) {
+                               showPreview( url );
+                               event.preventDefault();
+                       }
+               }
+
+       }
+
+       /**
+        * Handles click on the auto-sliding controls element.
+        *
+        * @param {object} [event]
+        */
+       function onAutoSlidePlayerClick( event ) {
+
+               // Replay
+               if( Reveal.isLastSlide() && config.loop === false ) {
+                       slide( 0, 0 );
+                       resumeAutoSlide();
+               }
+               // Resume
+               else if( autoSlidePaused ) {
+                       resumeAutoSlide();
+               }
+               // Pause
+               else {
+                       pauseAutoSlide();
+               }
+
+       }
+
+
+       // 
--------------------------------------------------------------------//
+       // ------------------------ PLAYBACK COMPONENT 
------------------------//
+       // 
--------------------------------------------------------------------//
+
+
+       /**
+        * Constructor for the playback component, which displays
+        * play/pause/progress controls.
+        *
+        * @param {HTMLElement} container The component will append
+        * itself to this
+        * @param {function} progressCheck A method which will be
+        * called frequently to get the current progress on a range
+        * of 0-1
+        */
+       function Playback( container, progressCheck ) {
+
+               // Cosmetics
+               this.diameter = 100;
+               this.diameter2 = this.diameter/2;
+               this.thickness = 6;
+
+               // Flags if we are currently playing
+               this.playing = false;
+
+               // Current progress on a 0-1 range
+               this.progress = 0;
+
+               // Used to loop the animation smoothly
+               this.progressOffset = 1;
+
+               this.container = container;
+               this.progressCheck = progressCheck;
+
+               this.canvas = document.createElement( 'canvas' );
+               this.canvas.className = 'playback';
+               this.canvas.width = this.diameter;
+               this.canvas.height = this.diameter;
+               this.canvas.style.width = this.diameter2 + 'px';
+               this.canvas.style.height = this.diameter2 + 'px';
+               this.context = this.canvas.getContext( '2d' );
+
+               this.container.appendChild( this.canvas );
+
+               this.render();
+
+       }
+
+       /**
+        * @param value
+        */
+       Playback.prototype.setPlaying = function( value ) {
+
+               var wasPlaying = this.playing;
+
+               this.playing = value;
+
+               // Start repainting if we weren't already
+               if( !wasPlaying && this.playing ) {
+                       this.animate();
+               }
+               else {
+                       this.render();
+               }
+
+       };
+
+       Playback.prototype.animate = function() {
+
+               var progressBefore = this.progress;
+
+               this.progress = this.progressCheck();
+
+               // When we loop, offset the progress so that it eases
+               // smoothly rather than immediately resetting
+               if( progressBefore > 0.8 && this.progress < 0.2 ) {
+                       this.progressOffset = this.progress;
+               }
+
+               this.render();
+
+               if( this.playing ) {
+                       features.requestAnimationFrameMethod.call( window, 
this.animate.bind( this ) );
+               }
+
+       };
+
+       /**
+        * Renders the current progress and playback state.
+        */
+       Playback.prototype.render = function() {
+
+               var progress = this.playing ? this.progress : 0,
+                       radius = ( this.diameter2 ) - this.thickness,
+                       x = this.diameter2,
+                       y = this.diameter2,
+                       iconSize = 28;
+
+               // Ease towards 1
+               this.progressOffset += ( 1 - this.progressOffset ) * 0.1;
+
+               var endAngle = ( - Math.PI / 2 ) + ( progress * ( Math.PI * 2 ) 
);
+               var startAngle = ( - Math.PI / 2 ) + ( this.progressOffset * ( 
Math.PI * 2 ) );
+
+               this.context.save();
+               this.context.clearRect( 0, 0, this.diameter, this.diameter );
+
+               // Solid background color
+               this.context.beginPath();
+               this.context.arc( x, y, radius + 4, 0, Math.PI * 2, false );
+               this.context.fillStyle = 'rgba( 0, 0, 0, 0.4 )';
+               this.context.fill();
+
+               // Draw progress track
+               this.context.beginPath();
+               this.context.arc( x, y, radius, 0, Math.PI * 2, false );
+               this.context.lineWidth = this.thickness;
+               this.context.strokeStyle = 'rgba( 255, 255, 255, 0.2 )';
+               this.context.stroke();
+
+               if( this.playing ) {
+                       // Draw progress on top of track
+                       this.context.beginPath();
+                       this.context.arc( x, y, radius, startAngle, endAngle, 
false );
+                       this.context.lineWidth = this.thickness;
+                       this.context.strokeStyle = '#fff';
+                       this.context.stroke();
+               }
+
+               this.context.translate( x - ( iconSize / 2 ), y - ( iconSize / 
2 ) );
+
+               // Draw play/pause icons
+               if( this.playing ) {
+                       this.context.fillStyle = '#fff';
+                       this.context.fillRect( 0, 0, iconSize / 2 - 4, iconSize 
);
+                       this.context.fillRect( iconSize / 2 + 4, 0, iconSize / 
2 - 4, iconSize );
+               }
+               else {
+                       this.context.beginPath();
+                       this.context.translate( 4, 0 );
+                       this.context.moveTo( 0, 0 );
+                       this.context.lineTo( iconSize - 4, iconSize / 2 );
+                       this.context.lineTo( 0, iconSize );
+                       this.context.fillStyle = '#fff';
+                       this.context.fill();
+               }
+
+               this.context.restore();
+
+       };
+
+       Playback.prototype.on = function( type, listener ) {
+               this.canvas.addEventListener( type, listener, false );
+       };
+
+       Playback.prototype.off = function( type, listener ) {
+               this.canvas.removeEventListener( type, listener, false );
+       };
+
+       Playback.prototype.destroy = function() {
+
+               this.playing = false;
+
+               if( this.canvas.parentNode ) {
+                       this.container.removeChild( this.canvas );
+               }
+
+       };
+
+
+       // 
--------------------------------------------------------------------//
+       // ------------------------------- API 
--------------------------------//
+       // 
--------------------------------------------------------------------//
+
+
+       Reveal = {
+               VERSION: VERSION,
+
+               initialize: initialize,
+               configure: configure,
+
+               sync: sync,
+               syncSlide: syncSlide,
+               syncFragments: syncFragments,
+
+               // Navigation methods
+               slide: slide,
+               left: navigateLeft,
+               right: navigateRight,
+               up: navigateUp,
+               down: navigateDown,
+               prev: navigatePrev,
+               next: navigateNext,
+
+               // Fragment methods
+               navigateFragment: navigateFragment,
+               prevFragment: previousFragment,
+               nextFragment: nextFragment,
+
+               // Deprecated aliases
+               navigateTo: slide,
+               navigateLeft: navigateLeft,
+               navigateRight: navigateRight,
+               navigateUp: navigateUp,
+               navigateDown: navigateDown,
+               navigatePrev: navigatePrev,
+               navigateNext: navigateNext,
+
+               // Forces an update in slide layout
+               layout: layout,
+
+               // Randomizes the order of slides
+               shuffle: shuffle,
+
+               // Returns an object with the available routes as booleans 
(left/right/top/bottom)
+               availableRoutes: availableRoutes,
+
+               // Returns an object with the available fragments as booleans 
(prev/next)
+               availableFragments: availableFragments,
+
+               // Toggles a help overlay with keyboard shortcuts
+               toggleHelp: toggleHelp,
+
+               // Toggles the overview mode on/off
+               toggleOverview: toggleOverview,
+
+               // Toggles the "black screen" mode on/off
+               togglePause: togglePause,
+
+               // Toggles the auto slide mode on/off
+               toggleAutoSlide: toggleAutoSlide,
+
+               // State checks
+               isOverview: isOverview,
+               isPaused: isPaused,
+               isAutoSliding: isAutoSliding,
+               isSpeakerNotes: isSpeakerNotes,
+
+               // Slide preloading
+               loadSlide: loadSlide,
+               unloadSlide: unloadSlide,
+
+               // Adds or removes all internal event listeners (such as 
keyboard)
+               addEventListeners: addEventListeners,
+               removeEventListeners: removeEventListeners,
+
+               // Facility for persisting and restoring the presentation state
+               getState: getState,
+               setState: setState,
+
+               // Presentation progress
+               getSlidePastCount: getSlidePastCount,
+
+               // Presentation progress on range of 0-1
+               getProgress: getProgress,
+
+               // Returns the indices of the current, or specified, slide
+               getIndices: getIndices,
+
+               // Returns an Array of all slides
+               getSlides: getSlides,
+
+               // Returns an Array of objects representing the attributes on
+               // the slides
+               getSlidesAttributes: getSlidesAttributes,
+
+               // Returns the total number of slides
+               getTotalSlides: getTotalSlides,
+
+               // Returns the slide element at the specified index
+               getSlide: getSlide,
+
+               // Returns the slide background element at the specified index
+               getSlideBackground: getSlideBackground,
+
+               // Returns the speaker notes string for a slide, or null
+               getSlideNotes: getSlideNotes,
+
+               // Returns the previous slide element, may be null
+               getPreviousSlide: function() {
+                       return previousSlide;
+               },
+
+               // Returns the current slide element
+               getCurrentSlide: function() {
+                       return currentSlide;
+               },
+
+               // Returns the current scale of the presentation content
+               getScale: function() {
+                       return scale;
+               },
+
+               // Returns the current configuration object
+               getConfig: function() {
+                       return config;
+               },
+
+               // Helper method, retrieves query string as a key/value hash
+               getQueryHash: function() {
+                       var query = {};
+
+                       location.search.replace( /[A-Z0-9]+?=([\w\.%-]*)/gi, 
function(a) {
+                               query[ a.split( '=' ).shift() ] = a.split( '=' 
).pop();
+                       } );
+
+                       // Basic deserialization
+                       for( var i in query ) {
+                               var value = query[ i ];
+
+                               query[ i ] = deserialize( unescape( value ) );
+                       }
+
+                       return query;
+               },
+
+               // Returns the top-level DOM element
+               getRevealElement: function() {
+                       return dom.wrapper || document.querySelector( '.reveal' 
);
+               },
+
+               // Returns a hash with all registered plugins
+               getPlugins: function() {
+                       return plugins;
+               },
+
+               // Returns true if we're currently on the first slide
+               isFirstSlide: function() {
+                       return ( indexh === 0 && indexv === 0 );
+               },
+
+               // Returns true if we're currently on the last slide
+               isLastSlide: function() {
+                       if( currentSlide ) {
+                               // Does this slide have a next sibling?
+                               if( currentSlide.nextElementSibling ) return 
false;
+
+                               // If it's vertical, does its parent have a 
next sibling?
+                               if( isVerticalSlide( currentSlide ) && 
currentSlide.parentNode.nextElementSibling ) return false;
+
+                               return true;
+                       }
+
+                       return false;
+               },
+
+               // Returns true if we're on the last slide in the current
+               // vertical stack
+               isLastVerticalSlide: function() {
+                       if( currentSlide && isVerticalSlide( currentSlide ) ) {
+                               // Does this slide have a next sibling?
+                               if( currentSlide.nextElementSibling ) return 
false;
+
+                               return true;
+                       }
+
+                       return false;
+               },
+
+               // Checks if reveal.js has been loaded and is ready for use
+               isReady: function() {
+                       return loaded;
+               },
+
+               // Forward event binding to the reveal DOM element
+               addEventListener: function( type, listener, useCapture ) {
+                       if( 'addEventListener' in window ) {
+                               Reveal.getRevealElement().addEventListener( 
type, listener, useCapture );
+                       }
+               },
+               removeEventListener: function( type, listener, useCapture ) {
+                       if( 'addEventListener' in window ) {
+                               Reveal.getRevealElement().removeEventListener( 
type, listener, useCapture );
+                       }
+               },
+
+               // Adds/removes a custom key binding
+               addKeyBinding: addKeyBinding,
+               removeKeyBinding: removeKeyBinding,
+
+               // API for registering and retrieving plugins
+               registerPlugin: registerPlugin,
+               hasPlugin: hasPlugin,
+               getPlugin: getPlugin,
+
+               // Programmatically triggers a keyboard event
+               triggerKey: function( keyCode ) {
+                       onDocumentKeyDown( { keyCode: keyCode } );
+               },
+
+               // Registers a new shortcut to include in the help overlay
+               registerKeyboardShortcut: function( key, value ) {
+                       keyboardShortcuts[key] = value;
+               }
+       };
+
+       return Reveal;
+
+}));
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/css/monokai.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/css/monokai.css
new file mode 100644
index 0000000..af24834
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/css/monokai.css
@@ -0,0 +1,71 @@
+/*
+Monokai style - ported by Luigi Maselli - http://grigio.org
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #272822;
+  color: #ddd;
+}
+
+.hljs-tag,
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-literal,
+.hljs-strong,
+.hljs-name {
+  color: #f92672;
+}
+
+.hljs-code {
+  color: #66d9ef;
+}
+
+.hljs-class .hljs-title {
+  color: white;
+}
+
+.hljs-attribute,
+.hljs-symbol,
+.hljs-regexp,
+.hljs-link {
+  color: #bf79db;
+}
+
+.hljs-string,
+.hljs-bullet,
+.hljs-subst,
+.hljs-title,
+.hljs-section,
+.hljs-emphasis,
+.hljs-type,
+.hljs-built_in,
+.hljs-builtin-name,
+.hljs-selector-attr,
+.hljs-selector-pseudo,
+.hljs-addition,
+.hljs-variable,
+.hljs-template-tag,
+.hljs-template-variable {
+  color: #a6e22e;
+}
+
+.hljs-comment,
+.hljs-quote,
+.hljs-deletion,
+.hljs-meta {
+  color: #75715e;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-literal,
+.hljs-doctag,
+.hljs-title,
+.hljs-section,
+.hljs-type,
+.hljs-selector-id {
+  font-weight: bold;
+}
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/css/zenburn.css 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/css/zenburn.css
new file mode 100644
index 0000000..07be502
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/css/zenburn.css
@@ -0,0 +1,80 @@
+/*
+
+Zenburn style from voldmar.ru (c) Vladimir Epifanov <address@hidden>
+based on dark.css by Ivan Sagalaev
+
+*/
+
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  background: #3f3f3f;
+  color: #dcdcdc;
+}
+
+.hljs-keyword,
+.hljs-selector-tag,
+.hljs-tag {
+  color: #e3ceab;
+}
+
+.hljs-template-tag {
+  color: #dcdcdc;
+}
+
+.hljs-number {
+  color: #8cd0d3;
+}
+
+.hljs-variable,
+.hljs-template-variable,
+.hljs-attribute {
+  color: #efdcbc;
+}
+
+.hljs-literal {
+  color: #efefaf;
+}
+
+.hljs-subst {
+  color: #8f8f8f;
+}
+
+.hljs-title,
+.hljs-name,
+.hljs-selector-id,
+.hljs-selector-class,
+.hljs-section,
+.hljs-type {
+  color: #efef8f;
+}
+
+.hljs-symbol,
+.hljs-bullet,
+.hljs-link {
+  color: #dca3a3;
+}
+
+.hljs-deletion,
+.hljs-string,
+.hljs-built_in,
+.hljs-builtin-name {
+  color: #cc9393;
+}
+
+.hljs-addition,
+.hljs-comment,
+.hljs-quote,
+.hljs-meta {
+  color: #7f9f7f;
+}
+
+
+.hljs-emphasis {
+  font-style: italic;
+}
+
+.hljs-strong {
+  font-weight: bold;
+}
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/font/league-gothic/LICENSE
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/font/league-gothic/LICENSE
new file mode 100644
index 0000000..29513e9
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/font/league-gothic/LICENSE
@@ -0,0 +1,2 @@
+SIL Open Font License (OFL)
+http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=OFL
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/font/league-gothic/league-gothic.css
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/font/league-gothic/league-gothic.css
new file mode 100644
index 0000000..44a33a1
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/font/league-gothic/league-gothic.css
@@ -0,0 +1,10 @@
+@font-face {
+    font-family: 'League Gothic';
+    src: url('league-gothic.eot');
+    src: url('league-gothic.eot?#iefix') format('embedded-opentype'),
+         url('league-gothic.woff') format('woff'),
+         url('league-gothic.ttf') format('truetype');
+
+    font-weight: normal;
+    font-style: normal;
+}
\ No newline at end of file
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diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/font/source-sans-pro/LICENSE
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/font/source-sans-pro/LICENSE
new file mode 100644
index 0000000..71b7a02
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/font/source-sans-pro/LICENSE
@@ -0,0 +1,45 @@
+SIL Open Font License
+
+Copyright 2010, 2012 Adobe Systems Incorporated (http://www.adobe.com/), with 
Reserved Font Name ‘Source’. All Rights Reserved. Source is a trademark of 
Adobe Systems Incorporated in the United States and/or other countries.
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at: 
http://scripts.sil.org/OFL
+
+—————————————————————————————-
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+—————————————————————————————-
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide 
development of collaborative font projects, to support the font creation 
efforts of academic and linguistic communities, and to provide a free and open 
framework in which fonts may be shared and improved in partnership with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and 
redistributed freely as long as they are not sold by themselves. The fonts, 
including any derivative works, can be bundled, embedded, redistributed and/or 
sold with any software provided that any reserved names are not used by 
derivative works. The fonts and derivatives, however, cannot be released under 
any other type of license. The requirement for fonts to remain under this 
license does not apply to any document creat [...]
+
+DEFINITIONS
+“Font Software” refers to the set of files released by the Copyright Holder(s) 
under this license and clearly marked as such. This may include source files, 
build scripts and documentation.
+
+“Reserved Font Name” refers to any names specified as such after the copyright 
statement(s).
+
+“Original Version” refers to the collection of Font Software components as 
distributed by the Copyright Holder(s).
+
+“Modified Version” refers to any derivative made by adding to, deleting, or 
substituting—in part or in whole—any of the components of the Original Version, 
by changing formats or by porting the Font Software to a new environment.
+
+“Author” refers to any designer, engineer, programmer, technical writer or 
other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining a copy 
of the Font Software, to use, study, copy, merge, embed, modify, redistribute, 
and sell modified and unmodified copies of the Font Software, subject to the 
following conditions:
+
+1) Neither the Font Software nor any of its individual components, in Original 
or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled, 
redistributed and/or sold with any software, provided that each copy contains 
the above copyright notice and this license. These can be included either as 
stand-alone text files, human-readable headers or in the appropriate 
machine-readable metadata fields within text or binary files as long as those 
fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font Name(s) 
unless explicit written permission is granted by the corresponding Copyright 
Holder. This restriction only applies to the primary font name as presented to 
the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font 
Software shall not be used to promote, endorse or advertise any Modified 
Version, except to acknowledge the contribution(s) of the Copyright Holder(s) 
and the Author(s) or with their explicit written permission.
+
+5) The Font Software, modified or unmodified, in part or in whole, must be 
distributed entirely under this license, and must not be distributed under any 
other license. The requirement for fonts to remain under this license does not 
apply to any document created using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS 
OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY, 
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT, 
TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR 
ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, 
INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF 
CONTRACT, TORT OR OTHERWISE, ARISING FROM [...]
\ No newline at end of file
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 differ
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/font/source-sans-pro/source-sans-pro.css
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/font/source-sans-pro/source-sans-pro.css
new file mode 100644
index 0000000..0707a4f
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/font/source-sans-pro/source-sans-pro.css
@@ -0,0 +1,39 @@
+@font-face {
+    font-family: 'Source Sans Pro';
+    src: url('source-sans-pro-regular.eot');
+    src: url('source-sans-pro-regular.eot?#iefix') format('embedded-opentype'),
+         url('source-sans-pro-regular.woff') format('woff'),
+         url('source-sans-pro-regular.ttf') format('truetype');
+    font-weight: normal;
+    font-style: normal;
+}
+
+@font-face {
+    font-family: 'Source Sans Pro';
+    src: url('source-sans-pro-italic.eot');
+    src: url('source-sans-pro-italic.eot?#iefix') format('embedded-opentype'),
+         url('source-sans-pro-italic.woff') format('woff'),
+         url('source-sans-pro-italic.ttf') format('truetype');
+    font-weight: normal;
+    font-style: italic;
+}
+
+@font-face {
+    font-family: 'Source Sans Pro';
+    src: url('source-sans-pro-semibold.eot');
+    src: url('source-sans-pro-semibold.eot?#iefix') 
format('embedded-opentype'),
+         url('source-sans-pro-semibold.woff') format('woff'),
+         url('source-sans-pro-semibold.ttf') format('truetype');
+    font-weight: 600;
+    font-style: normal;
+}
+
+@font-face {
+    font-family: 'Source Sans Pro';
+    src: url('source-sans-pro-semibolditalic.eot');
+    src: url('source-sans-pro-semibolditalic.eot?#iefix') 
format('embedded-opentype'),
+         url('source-sans-pro-semibolditalic.woff') format('woff'),
+         url('source-sans-pro-semibolditalic.ttf') format('truetype');
+    font-weight: 600;
+    font-style: italic;
+}
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/js/html5shiv.js 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/js/html5shiv.js
new file mode 100644
index 0000000..50649b9
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/js/html5shiv.js
@@ -0,0 +1,7 @@
+document.createElement('header');
+document.createElement('nav');
+document.createElement('section');
+document.createElement('article');
+document.createElement('aside');
+document.createElement('footer');
+document.createElement('hgroup');
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/js/promise.js 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/js/promise.js
new file mode 100644
index 0000000..88e9b19
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/lib/js/promise.js
@@ -0,0 +1,2 @@
+/* MIT | https://github.com/taylorhakes/promise-polyfill */
+!function(e,n){"object"==typeof exports&&"undefined"!=typeof 
module?n():"function"==typeof 
define&&define.amd?define(n):n()}(0,function(){"use strict";function e(e){var 
n=this.constructor;return this.then(function(t){return 
n.resolve(e()).then(function(){return t})},function(t){return 
n.resolve(e()).then(function(){return n.reject(t)})})}function n(){}function 
t(e){if(!(this instanceof t))throw new TypeError("Promises must be constructed 
via new");if("function"!=typeof e)throw new TypeEr [...]
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/package-lock.json 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/package-lock.json
new file mode 100644
index 0000000..ade1425
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/package-lock.json
@@ -0,0 +1,5891 @@
+{
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+        "negotiator": "0.6.1"
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"sha512-bqVioMFFzc2awcdJZIzR3HjZFX20QhilVS7hytkKrv7xFAn8bM1gzc/FOX2awLISvWe0PV8ptFKcon+wZ5qYkg==",
+          "dev": true
+        },
+        "mime-types": {
+          "version": "2.1.22",
+          "resolved": 
"https://registry.npmjs.org/mime-types/-/mime-types-2.1.22.tgz";,
+          "integrity": 
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+          "dev": true,
+          "requires": {
+            "mime-db": "~1.38.0"
+          }
+        }
+      }
+    },
+    "after": {
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+      "version": "4.2.1",
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+}
diff --git a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/package.json 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/package.json
new file mode 100644
index 0000000..a51fb2f
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/package.json
@@ -0,0 +1,44 @@
+{
+  "name": "reveal.js",
+  "version": "3.8.0",
+  "description": "The HTML Presentation Framework",
+  "homepage": "http://revealjs.com";,
+  "subdomain": "revealjs",
+  "main": "js/reveal.js",
+  "scripts": {
+    "test": "grunt test",
+    "start": "grunt serve",
+    "build": "grunt"
+  },
+  "author": {
+    "name": "Hakim El Hattab",
+    "email": "address@hidden",
+    "web": "http://hakim.se";
+  },
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/hakimel/reveal.js.git"
+  },
+  "engines": {
+    "node": ">=9.0.0"
+  },
+  "devDependencies": {
+    "express": "^4.16.2",
+    "grunt": "^1.0.4",
+    "grunt-cli": "^1.3.2",
+    "grunt-autoprefixer": "^3.0.4",
+    "grunt-contrib-connect": "^2.0.0",
+    "grunt-contrib-cssmin": "^3.0.0",
+    "grunt-contrib-jshint": "^2.0.0",
+    "grunt-contrib-qunit": "^3.1.0",
+    "grunt-contrib-uglify": "^3.3.0",
+    "grunt-contrib-watch": "^1.1.0",
+    "grunt-sass": "^3.0.2",
+    "grunt-zip": "~0.17.1",
+    "load-grunt-tasks": "^4.0.0",
+    "node-sass": "^4.11.0",
+    "mustache": "^2.3.0",
+    "socket.io": "^2.2.0"
+  },
+  "license": "MIT"
+}
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/highlight/highlight.js
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/highlight/highlight.js
new file mode 100644
index 0000000..83305e1
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/highlight/highlight.js
@@ -0,0 +1,168 @@
+/*! highlight.js v9.11.0 | BSD3 License | git.io/hljslicense */
+!function(e){var n="object"==typeof window&&window||"object"==typeof 
self&&self;"undefined"!=typeof 
exports?e(exports):n&&(n.hljs=e({}),"function"==typeof 
define&&define.amd&&define([],function(){return n.hljs}))}(function(e){function 
n(e){return 
e.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;")}function 
t(e){return e.nodeName.toLowerCase()}function r(e,n){var t=e&&e.exec(n);return 
t&&0===t.index}function a(e){return k.test(e)}function i(e){var 
n,t,r,i,o=e.className+" ";i [...]
+c:[{cN:"comment",b:/\(\*/,e:/\*\)/},e.ASM,e.QSM,e.CNM,{b:/\{/,e:/\}/,i:/:/}]}});hljs.registerLanguage("roboconf",function(a){var
 
e="[a-zA-Z-_][^\\n{]+\\{",n={cN:"attribute",b:/[a-zA-Z-_]+/,e:/\s*:/,eE:!0,starts:{e:";",r:0,c:[{cN:"variable",b:/\.[a-zA-Z-_]+/},{cN:"keyword",b:/\(optional\)/}]}};return{aliases:["graph","instances"],cI:!0,k:"import",c:[{b:"^facet
 "+e,e:"}",k:"facet",c:[n,a.HCM]},{b:"^\\s*instance of "+e,e:"}",k:"name count 
channels instance-data instance-state instance of",i [...]
+
+/* highlightjs-line-numbers.js 2.6.0 | (C) 2018 Yauheni Pakala | MIT License | 
github.com/wcoder/highlightjs-line-numbers.js */
+!function(n,e){"use strict";function t(){var 
n=e.createElement("style");n.type="text/css",n.innerHTML=g(".{0}{border-collapse:collapse}.{0}
 
td{padding:0}.{1}:before{content:attr({2})}",[v,L,b]),e.getElementsByTagName("head")[0].appendChild(n)}function
 
r(t){"interactive"===e.readyState||"complete"===e.readyState?i(t):n.addEventListener("DOMContentLoaded",function(){i(t)})}function
 i(t){try{var r=e.querySelectorAll("code.hljs,code.nohighlight");for(var i in 
r)r.hasOwnProperty(i)&&l(r[i],t) [...]
+
+/**
+ * This reveal.js plugin is wrapper around the highlight.js
+ * syntax highlighting library.
+ */
+(function( root, factory ) {
+    if (typeof define === 'function' && define.amd) {
+        root.RevealHighlight = factory();
+    } else if( typeof exports === 'object' ) {
+        module.exports = factory();
+    } else {
+        // Browser globals (root is window)
+        root.RevealHighlight = factory();
+    }
+}( this, function() {
+
+       // Function to perform a better "data-trim" on code snippets
+       // Will slice an indentation amount on each line of the snippet (amount 
based on the line having the lowest indentation length)
+       function betterTrim(snippetEl) {
+               // Helper functions
+               function trimLeft(val) {
+                       // Adapted from 
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/Trim#Polyfill
+                       return val.replace(/^[\s\uFEFF\xA0]+/g, '');
+               }
+               function trimLineBreaks(input) {
+                       var lines = input.split('\n');
+
+                       // Trim line-breaks from the beginning
+                       for (var i = 0; i < lines.length; i++) {
+                               if (lines[i].trim() === '') {
+                                       lines.splice(i--, 1);
+                               } else break;
+                       }
+
+                       // Trim line-breaks from the end
+                       for (var i = lines.length-1; i >= 0; i--) {
+                               if (lines[i].trim() === '') {
+                                       lines.splice(i, 1);
+                               } else break;
+                       }
+
+                       return lines.join('\n');
+               }
+
+               // Main function for betterTrim()
+               return (function(snippetEl) {
+                       var content = trimLineBreaks(snippetEl.innerHTML);
+                       var lines = content.split('\n');
+                       // Calculate the minimum amount to remove on each line 
start of the snippet (can be 0)
+                       var pad = lines.reduce(function(acc, line) {
+                               if (line.length > 0 && trimLeft(line).length > 
0 && acc > line.length - trimLeft(line).length) {
+                                       return line.length - 
trimLeft(line).length;
+                               }
+                               return acc;
+                       }, Number.POSITIVE_INFINITY);
+                       // Slice each line with this amount
+                       return lines.map(function(line, index) {
+                               return line.slice(pad);
+                       })
+                       .join('\n');
+               })(snippetEl);
+       }
+
+       var RevealHighlight = {
+               init: function() {
+
+                       // Read the plugin config options and provide fallbacks
+                       var config = Reveal.getConfig().highlight || {};
+                       config.highlightOnLoad = typeof config.highlightOnLoad 
=== 'boolean' ? config.highlightOnLoad : true;
+                       config.escapeHTML = typeof config.escapeHTML === 
'boolean' ? config.escapeHTML : true;
+
+                       [].slice.call( document.querySelectorAll( '.reveal pre 
code' ) ).forEach( function( block ) {
+
+                               // Trim whitespace if the "data-trim" attribute 
is present
+                               if( block.hasAttribute( 'data-trim' ) && typeof 
block.innerHTML.trim === 'function' ) {
+                                       block.innerHTML = betterTrim( block );
+                               }
+
+                               // Escape HTML tags unless the "data-noescape" 
attrbute is present
+                               if( config.escapeHTML && !block.hasAttribute( 
'data-noescape' )) {
+                                       block.innerHTML = 
block.innerHTML.replace( /</g,"&lt;").replace(/>/g, '&gt;' );
+                               }
+
+                               // Re-highlight when focus is lost (for 
contenteditable code)
+                               block.addEventListener( 'focusout', function( 
event ) {
+                                       hljs.highlightBlock( 
event.currentTarget );
+                               }, false );
+
+                               if( config.highlightOnLoad ) {
+                                       RevealHighlight.highlightBlock( block );
+                               }
+                       } );
+
+               },
+
+               /**
+                * Highlights a code block. If the <code> node has the
+                * 'data-line-numbers' attribute we also generate slide
+                * numbers.
+                */
+               highlightBlock: function( block ) {
+
+                       hljs.highlightBlock( block );
+
+                       if( block.hasAttribute( 'data-line-numbers' ) ) {
+                               hljs.lineNumbersBlock( block, { singleLine: 
true } );
+
+                               // hljs.lineNumbersBlock runs async code on the 
next cycle,
+                               // so we need to do the same to execute after 
it's done
+                               setTimeout( 
RevealHighlight.highlightLines.bind( this, block ), 0 );
+                       }
+
+               },
+
+               /**
+                * Visually emphasize specific lines within a code block.
+                * This only works on blocks with line numbering turned on.
+                *
+                * @param {HTMLElement} block a <code> block
+                * @param {String} [linesToHighlight] The lines that should be
+                * highlighted in this format:
+                * "1"          = highlights line 1
+                * "2,5"        = highlights lines 2 & 5
+                * "2,5-7"      = highlights lines 2, 5, 6 & 7
+                */
+               highlightLines: function( block, linesToHighlight ) {
+
+                       linesToHighlight = linesToHighlight || 
block.getAttribute( 'data-line-numbers' );
+
+                       if( typeof linesToHighlight === 'string' && 
linesToHighlight !== '' ) {
+
+                               linesToHighlight.split( ',' ).forEach( 
function( lineNumbers ) {
+
+                                       // Avoid failures becase of whitespace
+                                       lineNumbers = lineNumbers.replace( 
/\s/g, '' );
+
+                                       // Ensure that we looking at a valid 
slide number (1 or 1-2)
+                                       if( /^[\d-]+$/.test( lineNumbers ) ) {
+
+                                               lineNumbers = 
lineNumbers.split( '-' );
+
+                                               var lineStart = lineNumbers[0];
+                                               var lineEnd = lineNumbers[1] || 
lineStart;
+
+                                               [].slice.call( 
block.querySelectorAll( 'table 
tr:nth-child(n+'+lineStart+'):nth-child(-n+'+lineEnd+')' ) ).forEach( function( 
lineElement ) {
+                                                       
lineElement.classList.add( 'highlight-line' );
+                                               } );
+
+                                       }
+
+                               } );
+
+                       }
+
+               }
+       }
+
+       Reveal.registerPlugin( 'highlight', RevealHighlight );
+
+       return RevealHighlight;
+
+}));
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/markdown/example.html
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/markdown/example.html
new file mode 100644
index 0000000..0904fbb
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/markdown/example.html
@@ -0,0 +1,134 @@
+<!doctype html>
+<html lang="en">
+
+       <head>
+               <meta charset="utf-8">
+
+               <title>reveal.js - Markdown Demo</title>
+
+               <link rel="stylesheet" href="../../css/reveal.css">
+               <link rel="stylesheet" href="../../css/theme/white.css" 
id="theme">
+
+        <link rel="stylesheet" href="../../lib/css/monokai.css">
+       </head>
+
+       <body>
+
+               <div class="reveal">
+
+                       <div class="slides">
+
+                <!-- Use external markdown resource, separate slides by three 
newlines; vertical slides by two newlines -->
+                <section data-markdown="example.md" data-separator="^\n\n\n" 
data-separator-vertical="^\n\n"></section>
+
+                <!-- Slides are separated by three dashes (quick 'n dirty 
regular expression) -->
+                <section data-markdown data-separator="---">
+                    <script type="text/template">
+                        ## Demo 1
+                        Slide 1
+                        ---
+                        ## Demo 1
+                        Slide 2
+                        ---
+                        ## Demo 1
+                        Slide 3
+                    </script>
+                </section>
+
+                <!-- Slides are separated by newline + three dashes + newline, 
vertical slides identical but two dashes -->
+                <section data-markdown data-separator="^\n---\n$" 
data-separator-vertical="^\n--\n$">
+                    <script type="text/template">
+                        ## Demo 2
+                        Slide 1.1
+
+                        --
+
+                        ## Demo 2
+                        Slide 1.2
+
+                        ---
+
+                        ## Demo 2
+                        Slide 2
+                    </script>
+                </section>
+
+                <!-- No "extra" slides, since there are no separators defined 
(so they'll become horizontal rulers) -->
+                <section data-markdown>
+                    <script type="text/template">
+                        A
+
+                        ---
+
+                        B
+
+                        ---
+
+                        C
+                    </script>
+                </section>
+
+                <!-- Slide attributes -->
+                <section data-markdown>
+                    <script type="text/template">
+                        <!-- .slide: data-background="#000000" -->
+                        ## Slide attributes
+                    </script>
+                </section>
+
+                <!-- Element attributes -->
+                <section data-markdown>
+                    <script type="text/template">
+                        ## Element attributes
+                        - Item 1 <!-- .element: class="fragment" 
data-fragment-index="2" -->
+                        - Item 2 <!-- .element: class="fragment" 
data-fragment-index="1" -->
+                    </script>
+                </section>
+
+                <!-- Code -->
+                <section data-markdown>
+                    <script type="text/template">
+                        ```php
+                        public function foo()
+                        {
+                            $foo = array(
+                                'bar' => 'bar'
+                            )
+                        }
+                        ```
+                    </script>
+                </section>
+
+                <!-- Images -->
+                <section data-markdown>
+                    <script type="text/template">
+                        ![Sample 
image](https://s3.amazonaws.com/static.slid.es/logo/v2/slides-symbol-512x512.png)
+                    </script>
+                </section>
+
+            </div>
+               </div>
+
+               <script src="../../js/reveal.js"></script>
+
+               <script>
+
+                       Reveal.initialize({
+                               controls: true,
+                               progress: true,
+                               history: true,
+                               center: true,
+
+                               // Optional libraries used to extend on 
reveal.js
+                               dependencies: [
+                                       { src: 'marked.js', condition: 
function() { return !!document.querySelector( '[data-markdown]' ); } },
+                    { src: 'markdown.js', condition: function() { return 
!!document.querySelector( '[data-markdown]' ); } },
+                    { src: '../highlight/highlight.js', async: true, callback: 
function() { hljs.initHighlightingOnLoad(); } },
+                                       { src: '../notes/notes.js' }
+                               ]
+                       });
+
+               </script>
+
+       </body>
+</html>
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/markdown/example.md
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/markdown/example.md
new file mode 100644
index 0000000..89c7534
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/markdown/example.md
@@ -0,0 +1,36 @@
+# Markdown Demo
+
+
+
+## External 1.1
+
+Content 1.1
+
+Note: This will only appear in the speaker notes window.
+
+
+## External 1.2
+
+Content 1.2
+
+
+
+## External 2
+
+Content 2.1
+
+
+
+## External 3.1
+
+Content 3.1
+
+
+## External 3.2
+
+Content 3.2
+
+
+## External 3.3
+
+![External 
Image](https://s3.amazonaws.com/static.slid.es/logo/v2/slides-symbol-512x512.png)
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/markdown/markdown.js
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/markdown/markdown.js
new file mode 100755
index 0000000..c641d81
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/markdown/markdown.js
@@ -0,0 +1,446 @@
+/**
+ * The reveal.js markdown plugin. Handles parsing of
+ * markdown inside of presentations as well as loading
+ * of external markdown documents.
+ */
+(function( root, factory ) {
+       if (typeof define === 'function' && define.amd) {
+               root.marked = require( './marked' );
+               root.RevealMarkdown = factory( root.marked );
+       } else if( typeof exports === 'object' ) {
+               module.exports = factory( require( './marked' ) );
+       } else {
+               // Browser globals (root is window)
+               root.RevealMarkdown = factory( root.marked );
+       }
+}( this, function( marked ) {
+
+       var DEFAULT_SLIDE_SEPARATOR = '^\r?\n---\r?\n$',
+               DEFAULT_NOTES_SEPARATOR = 'notes?:',
+               DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR = 
'\\\.element\\\s*?(.+?)$',
+               DEFAULT_SLIDE_ATTRIBUTES_SEPARATOR = 
'\\\.slide:\\\s*?(\\\S.+?)$';
+
+       var SCRIPT_END_PLACEHOLDER = '__SCRIPT_END__';
+
+
+       /**
+        * Retrieves the markdown contents of a slide section
+        * element. Normalizes leading tabs/whitespace.
+        */
+       function getMarkdownFromSlide( section ) {
+
+               // look for a <script> or <textarea data-template> wrapper
+               var template = section.querySelector( '[data-template]' ) || 
section.querySelector( 'script' );
+
+               // strip leading whitespace so it isn't evaluated as code
+               var text = ( template || section ).textContent;
+
+               // restore script end tags
+               text = text.replace( new RegExp( SCRIPT_END_PLACEHOLDER, 'g' ), 
'</script>' );
+
+               var leadingWs = text.match( /^\n?(\s*)/ )[1].length,
+                       leadingTabs = text.match( /^\n?(\t*)/ )[1].length;
+
+               if( leadingTabs > 0 ) {
+                       text = text.replace( new RegExp('\\n?\\t{' + 
leadingTabs + '}','g'), '\n' );
+               }
+               else if( leadingWs > 1 ) {
+                       text = text.replace( new RegExp('\\n? {' + leadingWs + 
'}', 'g'), '\n' );
+               }
+
+               return text;
+
+       }
+
+       /**
+        * Given a markdown slide section element, this will
+        * return all arguments that aren't related to markdown
+        * parsing. Used to forward any other user-defined arguments
+        * to the output markdown slide.
+        */
+       function getForwardedAttributes( section ) {
+
+               var attributes = section.attributes;
+               var result = [];
+
+               for( var i = 0, len = attributes.length; i < len; i++ ) {
+                       var name = attributes[i].name,
+                               value = attributes[i].value;
+
+                       // disregard attributes that are used for markdown 
loading/parsing
+                       if( /data\-(markdown|separator|vertical|notes)/gi.test( 
name ) ) continue;
+
+                       if( value ) {
+                               result.push( name + '="' + value + '"' );
+                       }
+                       else {
+                               result.push( name );
+                       }
+               }
+
+               return result.join( ' ' );
+
+       }
+
+       /**
+        * Inspects the given options and fills out default
+        * values for what's not defined.
+        */
+       function getSlidifyOptions( options ) {
+
+               options = options || {};
+               options.separator = options.separator || 
DEFAULT_SLIDE_SEPARATOR;
+               options.notesSeparator = options.notesSeparator || 
DEFAULT_NOTES_SEPARATOR;
+               options.attributes = options.attributes || '';
+
+               return options;
+
+       }
+
+       /**
+        * Helper function for constructing a markdown slide.
+        */
+       function createMarkdownSlide( content, options ) {
+
+               options = getSlidifyOptions( options );
+
+               var notesMatch = content.split( new RegExp( 
options.notesSeparator, 'mgi' ) );
+
+               if( notesMatch.length === 2 ) {
+                       content = notesMatch[0] + '<aside class="notes">' + 
marked(notesMatch[1].trim()) + '</aside>';
+               }
+
+               // prevent script end tags in the content from interfering
+               // with parsing
+               content = content.replace( /<\/script>/g, 
SCRIPT_END_PLACEHOLDER );
+
+               return '<script type="text/template">' + content + '</script>';
+
+       }
+
+       /**
+        * Parses a data string into multiple slides based
+        * on the passed in separator arguments.
+        */
+       function slidify( markdown, options ) {
+
+               options = getSlidifyOptions( options );
+
+               var separatorRegex = new RegExp( options.separator + ( 
options.verticalSeparator ? '|' + options.verticalSeparator : '' ), 'mg' ),
+                       horizontalSeparatorRegex = new RegExp( 
options.separator );
+
+               var matches,
+                       lastIndex = 0,
+                       isHorizontal,
+                       wasHorizontal = true,
+                       content,
+                       sectionStack = [];
+
+               // iterate until all blocks between separators are stacked up
+               while( matches = separatorRegex.exec( markdown ) ) {
+                       notes = null;
+
+                       // determine direction (horizontal by default)
+                       isHorizontal = horizontalSeparatorRegex.test( 
matches[0] );
+
+                       if( !isHorizontal && wasHorizontal ) {
+                               // create vertical stack
+                               sectionStack.push( [] );
+                       }
+
+                       // pluck slide content from markdown input
+                       content = markdown.substring( lastIndex, matches.index 
);
+
+                       if( isHorizontal && wasHorizontal ) {
+                               // add to horizontal stack
+                               sectionStack.push( content );
+                       }
+                       else {
+                               // add to vertical stack
+                               sectionStack[sectionStack.length-1].push( 
content );
+                       }
+
+                       lastIndex = separatorRegex.lastIndex;
+                       wasHorizontal = isHorizontal;
+               }
+
+               // add the remaining slide
+               ( wasHorizontal ? sectionStack : 
sectionStack[sectionStack.length-1] ).push( markdown.substring( lastIndex ) );
+
+               var markdownSections = '';
+
+               // flatten the hierarchical stack, and insert <section 
data-markdown> tags
+               for( var i = 0, len = sectionStack.length; i < len; i++ ) {
+                       // vertical
+                       if( sectionStack[i] instanceof Array ) {
+                               markdownSections += '<section '+ 
options.attributes +'>';
+
+                               sectionStack[i].forEach( function( child ) {
+                                       markdownSections += '<section 
data-markdown>' + createMarkdownSlide( child, options ) + '</section>';
+                               } );
+
+                               markdownSections += '</section>';
+                       }
+                       else {
+                               markdownSections += '<section '+ 
options.attributes +' data-markdown>' + createMarkdownSlide( sectionStack[i], 
options ) + '</section>';
+                       }
+               }
+
+               return markdownSections;
+
+       }
+
+       /**
+        * Parses any current data-markdown slides, splits
+        * multi-slide markdown into separate sections and
+        * handles loading of external markdown.
+        */
+       function processSlides() {
+
+               return new Promise( function( resolve ) {
+
+                       var externalPromises = [];
+
+                       [].slice.call( document.querySelectorAll( 
'[data-markdown]') ).forEach( function( section, i ) {
+
+                               if( section.getAttribute( 'data-markdown' 
).length ) {
+
+                                       externalPromises.push( 
loadExternalMarkdown( section ).then(
+
+                                               // Finished loading external 
file
+                                               function( xhr, url ) {
+                                                       section.outerHTML = 
slidify( xhr.responseText, {
+                                                               separator: 
section.getAttribute( 'data-separator' ),
+                                                               
verticalSeparator: section.getAttribute( 'data-separator-vertical' ),
+                                                               notesSeparator: 
section.getAttribute( 'data-separator-notes' ),
+                                                               attributes: 
getForwardedAttributes( section )
+                                                       });
+                                               },
+
+                                               // Failed to load markdown
+                                               function( xhr, url ) {
+                                                       section.outerHTML = 
'<section data-state="alert">' +
+                                                               'ERROR: The 
attempt to fetch ' + url + ' failed with HTTP status ' + xhr.status + '.' +
+                                                               'Check your 
browser\'s JavaScript console for more details.' +
+                                                               '<p>Remember 
that you need to serve the presentation HTML from a HTTP server.</p>' +
+                                                               '</section>';
+                                               }
+
+                                       ) );
+
+                               }
+                               else if( section.getAttribute( 'data-separator' 
) || section.getAttribute( 'data-separator-vertical' ) || section.getAttribute( 
'data-separator-notes' ) ) {
+
+                                       section.outerHTML = slidify( 
getMarkdownFromSlide( section ), {
+                                               separator: 
section.getAttribute( 'data-separator' ),
+                                               verticalSeparator: 
section.getAttribute( 'data-separator-vertical' ),
+                                               notesSeparator: 
section.getAttribute( 'data-separator-notes' ),
+                                               attributes: 
getForwardedAttributes( section )
+                                       });
+
+                               }
+                               else {
+                                       section.innerHTML = 
createMarkdownSlide( getMarkdownFromSlide( section ) );
+                               }
+
+                       });
+
+                       Promise.all( externalPromises ).then( resolve );
+
+               } );
+
+       }
+
+       function loadExternalMarkdown( section ) {
+
+               return new Promise( function( resolve, reject ) {
+
+                       var xhr = new XMLHttpRequest(),
+                               url = section.getAttribute( 'data-markdown' );
+
+                       datacharset = section.getAttribute( 'data-charset' );
+
+                       // see 
https://developer.mozilla.org/en-US/docs/Web/API/element.getAttribute#Notes
+                       if( datacharset != null && datacharset != '' ) {
+                               xhr.overrideMimeType( 'text/html; charset=' + 
datacharset );
+                       }
+
+                       xhr.onreadystatechange = function( section, xhr ) {
+                               if( xhr.readyState === 4 ) {
+                                       // file protocol yields status code 0 
(useful for local debug, mobile applications etc.)
+                                       if ( ( xhr.status >= 200 && xhr.status 
< 300 ) || xhr.status === 0 ) {
+
+                                               resolve( xhr, url );
+
+                                       }
+                                       else {
+
+                                               reject( xhr, url );
+
+                                       }
+                               }
+                       }.bind( this, section, xhr );
+
+                       xhr.open( 'GET', url, true );
+
+                       try {
+                               xhr.send();
+                       }
+                       catch ( e ) {
+                               alert( 'Failed to get the Markdown file ' + url 
+ '. Make sure that the presentation and the file are served by a HTTP server 
and the file can be found there. ' + e );
+                               resolve( xhr, url );
+                       }
+
+               } );
+
+       }
+
+       /**
+        * Check if a node value has the attributes pattern.
+        * If yes, extract it and add that value as one or several attributes
+        * to the target element.
+        *
+        * You need Cache Killer on Chrome to see the effect on any FOM 
transformation
+        * directly on refresh (F5)
+        * 
http://stackoverflow.com/questions/5690269/disabling-chrome-cache-for-website-development/7000899#answer-11786277
+        */
+       function addAttributeInElement( node, elementTarget, separator ) {
+
+               var mardownClassesInElementsRegex = new RegExp( separator, 'mg' 
);
+               var mardownClassRegex = new RegExp( "([^\"= 
]+?)=\"([^\"=]+?)\"", 'mg' );
+               var nodeValue = node.nodeValue;
+               if( matches = mardownClassesInElementsRegex.exec( nodeValue ) ) 
{
+
+                       var classes = matches[1];
+                       nodeValue = nodeValue.substring( 0, matches.index ) + 
nodeValue.substring( mardownClassesInElementsRegex.lastIndex );
+                       node.nodeValue = nodeValue;
+                       while( matchesClass = mardownClassRegex.exec( classes ) 
) {
+                               elementTarget.setAttribute( matchesClass[1], 
matchesClass[2] );
+                       }
+                       return true;
+               }
+               return false;
+       }
+
+       /**
+        * Add attributes to the parent element of a text node,
+        * or the element of an attribute node.
+        */
+       function addAttributes( section, element, previousElement, 
separatorElementAttributes, separatorSectionAttributes ) {
+
+               if ( element != null && element.childNodes != undefined && 
element.childNodes.length > 0 ) {
+                       previousParentElement = element;
+                       for( var i = 0; i < element.childNodes.length; i++ ) {
+                               childElement = element.childNodes[i];
+                               if ( i > 0 ) {
+                                       j = i - 1;
+                                       while ( j >= 0 ) {
+                                               aPreviousChildElement = 
element.childNodes[j];
+                                               if ( typeof 
aPreviousChildElement.setAttribute == 'function' && 
aPreviousChildElement.tagName != "BR" ) {
+                                                       previousParentElement = 
aPreviousChildElement;
+                                                       break;
+                                               }
+                                               j = j - 1;
+                                       }
+                               }
+                               parentSection = section;
+                               if( childElement.nodeName ==  "section" ) {
+                                       parentSection = childElement ;
+                                       previousParentElement = childElement ;
+                               }
+                               if ( typeof childElement.setAttribute == 
'function' || childElement.nodeType == Node.COMMENT_NODE ) {
+                                       addAttributes( parentSection, 
childElement, previousParentElement, separatorElementAttributes, 
separatorSectionAttributes );
+                               }
+                       }
+               }
+
+               if ( element.nodeType == Node.COMMENT_NODE ) {
+                       if ( addAttributeInElement( element, previousElement, 
separatorElementAttributes ) == false ) {
+                               addAttributeInElement( element, section, 
separatorSectionAttributes );
+                       }
+               }
+       }
+
+       /**
+        * Converts any current data-markdown slides in the
+        * DOM to HTML.
+        */
+       function convertSlides() {
+
+               var sections = document.querySelectorAll( 
'[data-markdown]:not([data-markdown-parsed])');
+
+               [].slice.call( sections ).forEach( function( section ) {
+
+                       section.setAttribute( 'data-markdown-parsed', true )
+
+                       var notes = section.querySelector( 'aside.notes' );
+                       var markdown = getMarkdownFromSlide( section );
+
+                       section.innerHTML = marked( markdown );
+                       addAttributes(  section, section, null, 
section.getAttribute( 'data-element-attributes' ) ||
+                                                       
section.parentNode.getAttribute( 'data-element-attributes' ) ||
+                                                       
DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR,
+                                                       section.getAttribute( 
'data-attributes' ) ||
+                                                       
section.parentNode.getAttribute( 'data-attributes' ) ||
+                                                       
DEFAULT_SLIDE_ATTRIBUTES_SEPARATOR);
+
+                       // If there were notes, we need to re-add them after
+                       // having overwritten the section's HTML
+                       if( notes ) {
+                               section.appendChild( notes );
+                       }
+
+               } );
+
+               return Promise.resolve();
+
+       }
+
+       // API
+       var RevealMarkdown = {
+
+               /**
+                * Starts processing and converting Markdown within the
+                * current reveal.js deck.
+                *
+                * @param {function} callback function to invoke once
+                * we've finished loading and parsing Markdown
+                */
+               init: function( callback ) {
+
+                       if( typeof marked === 'undefined' ) {
+                               throw 'The reveal.js Markdown plugin requires 
marked to be loaded';
+                       }
+
+                       if( typeof hljs !== 'undefined' ) {
+                               marked.setOptions({
+                                       highlight: function( code, lang ) {
+                                               return hljs.highlightAuto( 
code, [lang] ).value;
+                                       }
+                               });
+                       }
+
+                       // marked can be configured via reveal.js config options
+                       var options = Reveal.getConfig().markdown;
+                       if( options ) {
+                               marked.setOptions( options );
+                       }
+
+                       return processSlides().then( convertSlides );
+
+               },
+
+               // TODO: Do these belong in the API?
+               processSlides: processSlides,
+               convertSlides: convertSlides,
+               slidify: slidify
+
+       };
+
+       // Register our plugin so that reveal.js will call our
+       // plugin 'init' method as part of the initialization
+       Reveal.registerPlugin( 'markdown', RevealMarkdown );
+
+       return RevealMarkdown;
+
+}));
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/markdown/marked.js
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/markdown/marked.js
new file mode 100644
index 0000000..481b9d8
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/markdown/marked.js
@@ -0,0 +1,6 @@
+/**
+ * marked - a markdown parser
+ * Copyright (c) 2011-2018, Christopher Jeffrey. (MIT Licensed)
+ * https://github.com/markedjs/marked
+ */
+!function(e){"use strict";var k={newline:/^\n+/,code:/^( 
{4}[^\n]+\n*)+/,fences:f,hr:/^ {0,3}((?:- *){3,}|(?:_ *){3,}|(?:\* 
*){3,})(?:\n+|$)/,heading:/^ *(#{1,6}) *([^\n]+?) *(?:#+ 
*)?(?:\n+|$)/,nptable:f,blockquote:/^( {0,3}> 
?(paragraph|[^\n]*)(?:\n|$))+/,list:/^( {0,3})(bull) 
[\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,html:"^ 
{0,3}(?:<(script|pre|style)[\\s>][\\s\\S]*?(?:</\\1>[^\\n]*\\n+|$)|comment[^\\n]*(\\n+|$)|<\\?[\\s\\S]*?\\?>\\n*|<![A-Z][\\s\\S]*?>\\n*|<!\\[CDATA\\[[\\s
 [...]
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/math/math.js 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/math/math.js
new file mode 100755
index 0000000..d76c9dd
--- /dev/null
+++ b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/math/math.js
@@ -0,0 +1,92 @@
+/**
+ * A plugin which enables rendering of math equations inside
+ * of reveal.js slides. Essentially a thin wrapper for MathJax.
+ *
+ * @author Hakim El Hattab
+ */
+var RevealMath = window.RevealMath || (function(){
+
+       var options = Reveal.getConfig().math || {};
+       var mathjax = options.mathjax || 
'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js';
+       var config = options.config || 'TeX-AMS_HTML-full';
+       var url = mathjax + '?config=' + config;
+
+       var defaultOptions = {
+               messageStyle: 'none',
+               tex2jax: {
+                       inlineMath: [ [ '$', '$' ], [ '\\(', '\\)' ] ],
+                       skipTags: [ 'script', 'noscript', 'style', 'textarea', 
'pre' ]
+               },
+               skipStartupTypeset: true
+       };
+
+       function defaults( options, defaultOptions ) {
+
+               for ( var i in defaultOptions ) {
+                       if ( !options.hasOwnProperty( i ) ) {
+                               options[i] = defaultOptions[i];
+                       }
+               }
+
+       }
+
+       function loadScript( url, callback ) {
+
+               var head = document.querySelector( 'head' );
+               var script = document.createElement( 'script' );
+               script.type = 'text/javascript';
+               script.src = url;
+
+               // Wrapper for callback to make sure it only fires once
+               var finish = function() {
+                       if( typeof callback === 'function' ) {
+                               callback.call();
+                               callback = null;
+                       }
+               }
+
+               script.onload = finish;
+
+               // IE
+               script.onreadystatechange = function() {
+                       if ( this.readyState === 'loaded' ) {
+                               finish();
+                       }
+               }
+
+               // Normal browsers
+               head.appendChild( script );
+
+       }
+
+       return {
+               init: function() {
+
+                       defaults( options, defaultOptions );
+                       defaults( options.tex2jax, defaultOptions.tex2jax );
+                       options.mathjax = options.config = null;
+
+                       loadScript( url, function() {
+
+                               MathJax.Hub.Config( options );
+
+                               // Typeset followed by an immediate reveal.js 
layout since
+                               // the typesetting process could affect slide 
height
+                               MathJax.Hub.Queue( [ 'Typeset', MathJax.Hub ] );
+                               MathJax.Hub.Queue( Reveal.layout );
+
+                               // Reprocess equations in slides when they turn 
visible
+                               Reveal.addEventListener( 'slidechanged', 
function( event ) {
+
+                                       MathJax.Hub.Queue( [ 'Typeset', 
MathJax.Hub, event.currentSlide ] );
+
+                               } );
+
+                       } );
+
+               }
+       }
+
+})();
+
+Reveal.registerPlugin( 'math', RevealMath );
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/multiplex/client.js
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/multiplex/client.js
new file mode 100644
index 0000000..3ffd1e0
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/multiplex/client.js
@@ -0,0 +1,13 @@
+(function() {
+       var multiplex = Reveal.getConfig().multiplex;
+       var socketId = multiplex.id;
+       var socket = io.connect(multiplex.url);
+
+       socket.on(multiplex.id, function(data) {
+               // ignore data from sockets that aren't ours
+               if (data.socketId !== socketId) { return; }
+               if( window.location.host === 'localhost:1947' ) return;
+
+               Reveal.setState(data.state);
+       });
+}());
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/multiplex/index.js
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/multiplex/index.js
new file mode 100644
index 0000000..8195f04
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/multiplex/index.js
@@ -0,0 +1,64 @@
+var http        = require('http');
+var express            = require('express');
+var fs                 = require('fs');
+var io                 = require('socket.io');
+var crypto             = require('crypto');
+
+var app        = express();
+var staticDir  = express.static;
+var server     = http.createServer(app);
+
+io = io(server);
+
+var opts = {
+       port: process.env.PORT || 1948,
+       baseDir : __dirname + '/../../'
+};
+
+io.on( 'connection', function( socket ) {
+       socket.on('multiplex-statechanged', function(data) {
+               if (typeof data.secret == 'undefined' || data.secret == null || 
data.secret === '') return;
+               if (createHash(data.secret) === data.socketId) {
+                       data.secret = null;
+                       socket.broadcast.emit(data.socketId, data);
+               };
+       });
+});
+
+[ 'css', 'js', 'plugin', 'lib' ].forEach(function(dir) {
+       app.use('/' + dir, staticDir(opts.baseDir + dir));
+});
+
+app.get("/", function(req, res) {
+       res.writeHead(200, {'Content-Type': 'text/html'});
+
+       var stream = fs.createReadStream(opts.baseDir + '/index.html');
+       stream.on('error', function( error ) {
+               res.write('<style>body{font-family: 
sans-serif;}</style><h2>reveal.js multiplex server.</h2><a 
href="/token">Generate token</a>');
+               res.end();
+       });
+       stream.on('readable', function() {
+               stream.pipe(res);
+       });
+});
+
+app.get("/token", function(req,res) {
+       var ts = new Date().getTime();
+       var rand = Math.floor(Math.random()*9999999);
+       var secret = ts.toString() + rand.toString();
+       res.send({secret: secret, socketId: createHash(secret)});
+});
+
+var createHash = function(secret) {
+       var cipher = crypto.createCipher('blowfish', secret);
+       return(cipher.final('hex'));
+};
+
+// Actually listen
+server.listen( opts.port || null );
+
+var brown = '\033[33m',
+       green = '\033[32m',
+       reset = '\033[0m';
+
+console.log( brown + "reveal.js:" + reset + " Multiplex running on port " + 
green + opts.port + reset );
\ No newline at end of file
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/multiplex/master.js
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/multiplex/master.js
new file mode 100644
index 0000000..7f4bf45
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/multiplex/master.js
@@ -0,0 +1,34 @@
+(function() {
+
+       // Don't emit events from inside of notes windows
+       if ( window.location.search.match( /receiver/gi ) ) { return; }
+
+       var multiplex = Reveal.getConfig().multiplex;
+
+       var socket = io.connect( multiplex.url );
+
+       function post() {
+
+               var messageData = {
+                       state: Reveal.getState(),
+                       secret: multiplex.secret,
+                       socketId: multiplex.id
+               };
+
+               socket.emit( 'multiplex-statechanged', messageData );
+
+       };
+
+       // post once the page is loaded, so the client follows also on "open 
URL".
+       window.addEventListener( 'load', post );
+
+       // Monitor events that trigger a change in state
+       Reveal.addEventListener( 'slidechanged', post );
+       Reveal.addEventListener( 'fragmentshown', post );
+       Reveal.addEventListener( 'fragmenthidden', post );
+       Reveal.addEventListener( 'overviewhidden', post );
+       Reveal.addEventListener( 'overviewshown', post );
+       Reveal.addEventListener( 'paused', post );
+       Reveal.addEventListener( 'resumed', post );
+
+}());
diff --git 
a/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/multiplex/package.json
 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/multiplex/package.json
new file mode 100644
index 0000000..bbed77a
--- /dev/null
+++ 
b/t3sserakt/20190131_GNUnet_C4_cologne/reveal.js-3.8.0/plugin/multiplex/package.json
@@ -0,0 +1,19 @@
+{
+  "name": "reveal-js-multiplex",
+  "version": "1.0.0",
+  "description": "reveal.js multiplex server",
+  "homepage": "http://revealjs.com";,
+  "scripts": {
+    "start"