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-
- GNU GENERAL PUBLIC LICENSE
- Version 1
- February 1989
-
- Copyright (C) 1989
- Free Software Foundation, Inc.
- 675 Massachusetts Avenue
- Cambridge, Massachusetts 02139
-
- Everyone is permitted to copy and distribute verbatim copies of this
- license document, but changing it is not allowed.
-
-
- PREAMBLE
-
- The license agreements of most software companies try to keep users at the
- mercy of those companies. By contrast, our General Public License is
- intended to guarantee your freedom to share and change free software--to
- make sure the software is free for all users. The General Public License
- applies to the Free Software Foundation's software and to any other program
- whose authors commit to using it. You can use it for your programs, too.
-
- When we speak of free software, we are referring to freedom, not price.
- Specifically, the General Public License is designed to make sure that you
- have the freedom to give away or sell copies of free software, 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 free, you must give the recipients all the rights that you have. You
- make sure that they, too, receive or can get the source code. And you must
- tell them 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.
-
- 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 Agreement 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 the Program or any work containing the Program or a portion
- of it, either verbatim or with modifications. Each licensee is addressed
- as "you."
-
- 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
- General Public License and to the absence of any warranty; and give any
- other recipients of the Program a copy of this General Public License along
- with the Program. You may charge a fee for the physical act of
- transferring a copy.
-
- 2. You may modify your copy or copies of the Program or any portion of it,
- and copy and distribute such modifications under the terms of Paragraph 1
- above, provided that you also do the following:
-
- (a) cause the modified files to carry prominent notices stating that
- you changed the files and the date of any change; and
-
- (b) cause the whole of the work that you distribute or publish, that
- in whole or in part contains the Program or any part thereof, either
- with or without modifications, to be licensed at no charge to all
- third parties under the terms of this General Public License (except
- that you may choose to grant warranty protection to some or all third
- parties, at your option).
-
- (c) If the modified program normally reads commands interactively when
- run, you must cause it, when started running for such interactive use
- in the simplest and most usual 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 a
- warranty) and that users may redistribute the program under these
- conditions, and telling the user how to view a copy of this General
- Public License.
-
- (d) 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.
-
- Mere aggregation of another independent work with the Program (or its
- derivative) on a volume of storage or distribution medium does not bring
- the other work under the scope of these terms.
-
- 3. You may copy and distribute the Program (or a portion or derivative of
- it, under Paragraph 2) in object code or executable form under the terms of
- Paragraphs 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 Paragraphs 1
- and 2 above; or,
-
- (b) accompany it with a written offer, valid for at least three years,
- to give any third party free (except for a nominal charge for the cost
- of distribution) a complete machine-readable copy of the corresponding
- source code, to be distributed under the terms of Paragraphs 1 and 2
- above; or,
-
- (c) accompany it with the information you received as to where the
- corresponding source code may be obtained. (This alternative is
- allowed only for noncommercial distribution and only if you received
- the program in object code or executable form alone.)
-
- Source code for a work means the preferred form of the work for making
- modifications to it. For an executable file, complete source code means
- all the source code for all modules it contains; but, as a special
- exception, it need not include source code for modules which are standard
- libraries that accompany the operating system on which the executable file
- runs, or for standard header files or definitions files that accompany the
- operating system.
-
- 4. You may not copy, modify, sub-license, distribute, or transfer the
- Program except as expressly provided under this General Public License.
- Any attempt otherwise to copy, modify, sub-license, distribute, or transfer
- the Program is void, and will automatically terminate your rights to use
- the Program under this License. However, parties who have received copies,
- or rights to use copies, from you under this General Public License will
- not have their licenses terminated so long as such parties remain in full
- compliance.
-
- 5. By copying, distributing, or modifying the Program (or any work based
- on the Program) you indicate your acceptance of this license to do so, and
- all its terms and conditions.
-
- 6. Each time you redistribute the Program (or any work based on the
- Program), the recipient automatically receives a license from the 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.
-
- 7. The Free Software Foundation may publish revised and/or new versions of
- the General Public License from time to time. Such new versions will be
- similar in spirit to the present version, but may differ in detail to
- address new problems or concerns.
-
- Each version is given a distinguishing version number. If the Program
- specifies a version number of the license which applies to it and "any
- later version," you have the option of following the terms and conditions
- either of that version or of any later version published by the Free
- Software Foundation. If the Program does not specify a version number of
- the license, you may choose any version ever published by the Free Software
- Foundation.
-
- 8. If you wish to incorporate parts of the Program into other free
- programs whose distribution conditions are different, write to the author
- to ask for permission. For software which is copyrighted by the Free
- Software Foundation, write to the Free Software Foundation; we sometimes
- make exceptions for this. Our decision will be guided by the two goals of
- preserving the free status of all derivatives of our free software and of
- promoting the sharing and reuse of software generally.
-
- NO WARRANTY
-
- 9. Because the Program is licensed free of charge, there is no warranty
- for the program, to the extent permitted by applicable law. Except when
- otherwise stated in writing the copyright holders and/or other parties
- provide the program "as is" without warranty of any kind, either expressed
- or implied, including, but not limited to, the implied warranties of
- merchantability and fitness for a particular purpose. The entire risk as
- to the quality and performance of the program is with you. Should the
- program prove defective, you assume the cost of all necessary servicing,
- repair, or correction.
-
- 10. In no event unless required by applicable law or agreed to in writing
- will any copyright holder, or any other party who may modify and/or
- redistribute the program as permitted above, be liable to you for damages,
- including any general, special, incidental, or consequential damages
- arising out of the use or inability to use the program (including, but not
- limited to, loss of data, data being rendered inaccurate, losses sustained
- by you or third parties, or a failure of the program to operate with any
- other programs), even if such holder or other party has been advised of the
- possibility of such damages.
-
- END OF TERMS AND CONDITIONS
-
- APPENDIX
- HOW TO APPLY THESE TERMS TO YOUR NEW PROGRAMS
-
- If you develop a new program, and you want it to be of the greatest
- possible use to humanity, the best way to achieve this is to make it free
- software which everyone can redistribute and change under these terms.
-
- To do so, attach the following notices to the program. It is safest to
- attach them to the start of each source file to most effectively convey the
- exclusion of warranty; and each file should have at least the "copyright"
- line and a pointer to where the full notice is found.
-
- <one line to give the program's name and a brief idea of what it does>
- Copyright (C) <year> <name of author>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to:
-
- Free Software Foundation, Inc.
- 675 Massachusetts Avenue
- Cambridge, Massachusetts 02139
-
- Also add information on how to contact you by electronic and paper mail.
-
- If the program is interactive, make it output a short notice like this when
- it starts in an interactive mode:
-
- Gnomovision version 69, Copyright (C) <year> <name of author>
- Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type "show
- w." This is free software, and you are welcome to redistribute it
- under certain conditions; type "show c" for details.
-
- The hypothetical commands "show w" and "show c" could show the appropriate
- parts of the General Public License. Of course, the commands you use may
- be called something other than "show w" and "show c"; they could even be
- mouse-clicks or menu-items--whatever suits your program.
-
- You should also get your employer (if you work as a programmer) or your
- school, if any, to sign a "copyright disclaimer" for the program, if
- necessary. Here is a sample (alter the names):
-
- Yoyodyne, Inc., hereby disclaims all copyright interest in the program
- "Gnomovision" (a program to direct compilers to make passes at
- assemblers) written by James Hacker.
-
- <signature of Ty Coon>, 1 April 1989
- Ty Coon, President of Vice
-
- That's all there is to it!
-