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- GNU GENERAL PUBLIC LICENSE
- Version 2, June 1991
- Copyright (C) 1989, 1991 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.
- 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 (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
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- Finally, any free program is threatened constantly by software
- patents. We wish to avoid the danger that redistributors of a free
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- program proprietary. To prevent this, we have made it clear that any
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- 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 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.
- You may charge a fee for the physical act of transferring a copy, and
- you may at your option offer warranty protection in exchange for a fee.
- 2. You may modify your copy or copies of the Program or any portion
- of it, thus forming a work based on the Program, and copy and
- distribute such modifications or work under the terms of Section 1
- above, provided that you also meet all of these conditions:
- a) You must cause the modified files to carry prominent notices
- stating that you changed the files and the date of any change.
- b) You must cause any work that you distribute or publish, that in
- whole or in part contains or is derived from the Program or any
- part thereof, to be licensed as a whole at no charge to all third
- parties under the terms of this License.
- c) If the modified program normally reads commands interactively
- when run, you must cause it, when started running for such
- interactive use in the most ordinary way, to print or display an
- announcement including an appropriate copyright notice and a
- notice that there is no warranty (or else, saying that you provide
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- the Program is not required to print an announcement.)
- These requirements apply to the modified work as a whole. If
- identifiable sections of that work are not derived from the Program,
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- sections when you distribute them as separate works. But when you
- distribute the same sections as part of a whole which is a work based
- on the Program, the distribution of the whole must be on the terms of
- this License, whose permissions for other licensees extend to the
- entire whole, and thus to each and every part regardless of who wrote it.
- Thus, it is not the intent of this section to claim rights or contest
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- In addition, mere aggregation of another work not based on the Program
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- a storage or distribution medium does not bring the other work under
- the scope of this License.
- 3. You may copy and distribute the Program (or a work based on it,
- under Section 2) in object code or executable form under the terms of
- Sections 1 and 2 above provided that you also do one of the following:
- a) Accompany it with the complete corresponding machine-readable
- source code, which must be distributed under the terms of Sections
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- If distribution of executable or object code is made by offering
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- distribution of the source code, even though third parties are not
- compelled to copy the source along with the object code.
- 4. You may not copy, modify, sublicense, or distribute the Program
- except as expressly provided under this License. Any attempt
- otherwise to copy, modify, sublicense or distribute the Program is
- void, and will automatically terminate your rights under this License.
- However, parties who have received copies, or rights, from you under
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- prohibited by law if you do not accept this License. Therefore, by
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- 6. Each time you redistribute the Program (or any work based on the
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- original licensor to copy, distribute or modify the Program subject to
- these terms and conditions. You may not impose any further
- restrictions on the recipients' exercise of the rights granted herein.
- You are not responsible for enforcing compliance by third parties to
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