Appendix C. GNU Free Documentation License
Version 1.2, November 2002
Note that any translations of the GNU Free Documentation License are not
published by the Free Software Foundation, and do not legally state the
distribution terms for software that uses the GNU FDL-only the
original English text of the GNU FDL does that.
Copyright (C) 2000,2001,2002 Free Software Foundation, Inc. 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA. Everyone is permitted to
copy and distribute verbatim copies of this license document, but
changing it is not allowed.
The purpose of this License is to make a manual, textbook, or other
functional and useful document “free”
in the sense of freedom: to assure everyone the effective freedom to
copy and redistribute it, with or without modifying it, either
commercially or noncommercially. Secondarily, this License preserves for
the author and publisher a way to get credit for their work, while not
being considered responsible for modifications made by others.
This License is a kind of “copyleft”,
which means that derivative works of the document must themselves be
free in the same sense. It complements the GNU General Public License,
which is a copyleft license designed for free software.
We have designed this License in order to use it for manuals for free
software, because free software needs free documentation: a free program
should come with manuals providing the same freedoms that the software
does. But this License is not limited to software manuals; it can be
used for any textual work, regardless of subject matter or whether it is
published as a printed book. We recommend this License principally for
works whose purpose is instruction or reference.