Re: update intro to Emacs Lisp programming

[Van L]

> Richard Stallman writes:
> 
> For ethical reasons, we don't cite any nonfree material as
> documentation.  We don't refer to anything on Youtube, ever, since
> viewing Youtube in a browser entails running nonfree Javascript code
> and it is an injustice to suggets people use that.

Can the exercises to be set equip the reader to eventually explore Harvard 
Library’s Open Metadata? for example.