G.1 GNU General Public License
Version 2, June 1991
Copyright © 1989, 1991 Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General
Public License is intended to guarantee your freedom to share and
change free software—to make sure the software is free for
all its users. This General Public License applies to most of the
Free Software Foundation's software and to any other program
whose authors commit to using it. (Some other Free Software
Foundation software is covered by the GNU Library General Public
License instead.) You can apply it to your programs, too.
When we speak of free software, we are referring to freedom,
not price. Our General Public Licenses are designed to make sure
that you have the freedom to distribute copies of free software
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source code or can get it if you want it, that you can change the
software or use pieces of it in new free programs; and that you
know you can do these things.
To protect your rights, we need to make restrictions that
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We protect your rights with two steps: (1) copyright the
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Also, for each author's protection and ours, we want to make
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The precise terms and conditions for copying, distribution and
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- This License applies to any program or other work which
contains a notice placed by the copyright holder saying it may
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The “Program”, below, refers to any such program or
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