GNU GENERAL PUBLIC LICENSE Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA
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 Li- cense is intended to guarantee your freedom to share and change free
When we speak of free software, we are refer- ring 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 re- strictions that forbid anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain respon- sibilities 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 li- cense 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 under- stands that there is no warranty for this free software. If the software is modified by some- one 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 con- stantly 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.
GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING,
DISTRIBUTION AND MODIFICATION
0.This License applies to any program or oth- er 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 pro- gram or work, and a "work based on the Pro- gram" means either the Program or any deriva- tive 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. (Hereinaf- ter, translation is included without limitation in the term "modification".) Each licensee is ad- dressed 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 con- tents 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 cop- ies of the Program's source code as you receive it, in any medium, provided that you conspicu- ously and appropriately publish on each copy
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