GNU GENERAL PUBLIC
LICENSE
Version 2, June 1991
Copyright (C) 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 Lesser 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 (and charge for this
service if you wish), that you receive 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
forbid anyone to deny you these rights or to ask you to
surrender the rights.
These restrictions translate to certain responsibilities for
you if you distribute copies of the software, or if you
modify it.
For example, if you distribute copies of such a program,
whether gratis or for a fee, you must give the recipients
all the rights that you have. You must make sure that
they, too, receive or can get the source code. And you
must show them these terms so they know their rights.
We protect your rights with two steps: (1) copyright the
software, and (2) offer you this license which gives you
legal permission to copy, distribute and/or modify the
software.
Also, for each author's protection and ours, we want to
make certain that everyone understands that there is no
warranty for this free software. If the software is
modified by someone else and passed on, we want its
recipients to know that what they have is not the original,
so that any problems introduced by others will not
reflect on the original authors' reputations.
Finally, any free program is threatened constantly by
software patents. We wish to avoid the danger that
redistributors of a free program will individually obtain
patent licenses, in effect making the program
proprietary. To prevent this, we have made it clear that
any patent must be licensed for everyone's free use or
not licensed at all.
The precise terms and conditions for copying,
distribution and modification follow.
TERMS AND CONDITIONS FOR
COPYING, DISTRIBUTION AND
MODIFICATION
0.
This License applies to any program or other work
which contains a notice placed by the copyright
holder saying it may be distributed under the terms
of this General Public License. The "Program",
below, refers to any such program or work, and a
"work based on the Program" means either the
Program or any derivative work under copyright
law: that is to say, a work containing the Program or
a portion of it, either verbatim or with modifications
and/or translated into another language.
(Hereinafter, translation is included without
limitation in the term "modification".) Each
licensee is addressed as "you".
Activities other than copying, distribution and
modification are not covered by this License; they are
outside its scope. The act of running the Program is not
restricted, and the output from the Program is covered
only if its contents constitute a work based on the
Program (independent of having been made by running
the Program).
Whether that is true depends on what the Program does.
1.
You may copy and distribute verbatim copies of the
Program's source code as you receive it, in any
medium, provided that you conspicuously and
appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep
intact all the notices that refer to this License and to
the absence of any warranty; and give any other
recipients of the Program a copy of this License
along with the Program.
GNU GENERAL PUBLIC LICENSE
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