Relevant text from FSF's "GPLv3 Third Discussion Draft Rationale",
as released on 2007-03-28.

I (Bradley M. Kuhn) went through FSF's "Third Discussion Draft Rationale",
and pasted in any sections that seemed useful to this tutorial. There is a
lot of interesting material in that particular rationale document, although
much of it is probably too verbose for inclusion. I expect much of this will
need to be cut out.

The raw material used for this commit can be found here:
http://gplv3.fsf.org/gpl3-dd3-guide
Specifically, a copy of the LaTeX sources are here:
http://gplv3.fsf.org/gpl3-dd3-rationale.tex

As I pasted in this text, I added FIXME's sometimes where it seemed the text
might need work. However, I was much more extensive in just pasting here, so
there's a big editing job now. The whole GPLv3 chapter is now completely
disjoint with all this pasting.

Finally, note that this material was originally copyrighted and licensed as
follows:

Copyright © 2007, Free Software Foundation, Inc.

Verbatim copying and distribution of this entire article are permitted
worldwide, without royalty, in any medium, provided this notice is
preserved.

However, I am hereby relicensing this material to CC-By-SA-4.0, with the
verbal permission from John Sullivan, Executive Director of the FSF, which
was given to me during a conference call on Wednesday 12 February 2014. I
also confirmed that relicensing permission on IRC with johnsu01 today.