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www/philosophy categories.html
From: |
Richard M. Stallman |
Subject: |
www/philosophy categories.html |
Date: |
Mon, 03 Dec 2007 02:10:43 +0000 |
CVSROOT: /webcvs/www
Module name: www
Changes by: Richard M. Stallman <rms> 07/12/03 02:10:43
Modified files:
philosophy : categories.html
Log message:
In definition of copyleft, recognize that some safe added requirements
can be allowed, and that there are other threats to block.
CVSWeb URLs:
http://web.cvs.savannah.gnu.org/viewcvs/www/philosophy/categories.html?cvsroot=www&r1=1.45&r2=1.46
Patches:
Index: categories.html
===================================================================
RCS file: /webcvs/www/www/philosophy/categories.html,v
retrieving revision 1.45
retrieving revision 1.46
diff -u -b -r1.45 -r1.46
--- categories.html 2 Dec 2007 19:48:48 -0000 1.45
+++ categories.html 3 Dec 2007 02:10:37 -0000 1.46
@@ -126,10 +126,15 @@
</dd>
<dt id="CopyleftedSoftware"><strong>Copylefted software</strong></dt>
- <dd>Copylefted software is free software whose distribution terms
- do not let redistributors add any additional restrictions when they
- redistribute or modify the software. This means that every copy of
- the software, even if it has been modified, must be free software.
+ <dd>Copylefted software is free software whose distribution
+ terms ensure that all copies of all versions are free
+ software. This means, for instance, that copyleft licenses
+ generally disallow others to add additional requirements to
+ the software (though a limited set of safe added requirements
+ can be allowed) and require making source code available.
+ Some copyleft licenses, such as GPL version 3, block other
+ means of turning software proprietary.
+
<p>In the GNU Project, we copyleft almost all the software we
write, because our goal is to give <em>every</em> user the freedoms
implied by the term “free software.” See <a href=
@@ -413,7 +418,7 @@
<p>
Updated:
<!-- timestamp start -->
-$Date: 2007/12/02 19:48:48 $
+$Date: 2007/12/03 02:10:37 $
<!-- timestamp end -->
</p>
</div>