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.