COPYING revision 1.1 1 1.1 skrll GNU GENERAL PUBLIC LICENSE
2 1.1 skrll Version 2, June 1991
3 1.1 skrll
4 1.1 skrll Copyright (C) 1989, 1991 Free Software Foundation, Inc.
5 1.1 skrll 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
6 1.1 skrll Everyone is permitted to copy and distribute verbatim copies
7 1.1 skrll of this license document, but changing it is not allowed.
8 1.1 skrll
9 1.1 skrll Preamble
10 1.1 skrll
11 1.1 skrll The licenses for most software are designed to take away your
12 1.1 skrll freedom to share and change it. By contrast, the GNU General Public
13 1.1 skrll License is intended to guarantee your freedom to share and change free
14 1.1 skrll software--to make sure the software is free for all its users. This
15 1.1 skrll General Public License applies to most of the Free Software
16 1.1 skrll Foundation's software and to any other program whose authors commit to
17 1.1 skrll using it. (Some other Free Software Foundation software is covered by
18 1.1 skrll the GNU Library General Public License instead.) You can apply it to
19 1.1 skrll your programs, too.
20 1.1 skrll
21 1.1 skrll When we speak of free software, we are referring to freedom, not
22 1.1 skrll price. Our General Public Licenses are designed to make sure that you
23 1.1 skrll have the freedom to distribute copies of free software (and charge for
24 1.1 skrll this service if you wish), that you receive source code or can get it
25 1.1 skrll if you want it, that you can change the software or use pieces of it
26 1.1 skrll in new free programs; and that you know you can do these things.
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28 1.1 skrll To protect your rights, we need to make restrictions that forbid
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30 1.1 skrll These restrictions translate to certain responsibilities for you if you
31 1.1 skrll distribute copies of the software, or if you modify it.
32 1.1 skrll
33 1.1 skrll For example, if you distribute copies of such a program, whether
34 1.1 skrll gratis or for a fee, you must give the recipients all the rights that
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39 1.1 skrll We protect your rights with two steps: (1) copyright the software, and
40 1.1 skrll (2) offer you this license which gives you legal permission to copy,
41 1.1 skrll distribute and/or modify the software.
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43 1.1 skrll Also, for each author's protection and ours, we want to make certain
44 1.1 skrll that everyone understands that there is no warranty for this free
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50 1.1 skrll Finally, any free program is threatened constantly by software
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55 1.1 skrll
56 1.1 skrll The precise terms and conditions for copying, distribution and
57 1.1 skrll modification follow.
58 1.1 skrll
60 1.1 skrll GNU GENERAL PUBLIC LICENSE
61 1.1 skrll TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
62 1.1 skrll
63 1.1 skrll 0. This License applies to any program or other work which contains
64 1.1 skrll a notice placed by the copyright holder saying it may be distributed
65 1.1 skrll under the terms of this General Public License. The "Program", below,
66 1.1 skrll refers to any such program or work, and a "work based on the Program"
67 1.1 skrll means either the Program or any derivative work under copyright law:
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70 1.1 skrll language. (Hereinafter, translation is included without limitation in
71 1.1 skrll the term "modification".) Each licensee is addressed as "you".
72 1.1 skrll
73 1.1 skrll Activities other than copying, distribution and modification are not
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75 1.1 skrll running the Program is not restricted, and the output from the Program
76 1.1 skrll is covered only if its contents constitute a work based on the
77 1.1 skrll Program (independent of having been made by running the Program).
78 1.1 skrll Whether that is true depends on what the Program does.
79 1.1 skrll
80 1.1 skrll 1. You may copy and distribute verbatim copies of the Program's
81 1.1 skrll source code as you receive it, in any medium, provided that you
82 1.1 skrll conspicuously and appropriately publish on each copy an appropriate
83 1.1 skrll copyright notice and disclaimer of warranty; keep intact all the
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86 1.1 skrll along with the Program.
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88 1.1 skrll You may charge a fee for the physical act of transferring a copy, and
89 1.1 skrll you may at your option offer warranty protection in exchange for a fee.
90 1.1 skrll
91 1.1 skrll 2. You may modify your copy or copies of the Program or any portion
92 1.1 skrll of it, thus forming a work based on the Program, and copy and
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96 1.1 skrll a) You must cause the modified files to carry prominent notices
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103 1.1 skrll
104 1.1 skrll c) If the modified program normally reads commands interactively
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109 1.1 skrll a warranty) and that users may redistribute the program under
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116 1.1 skrll These requirements apply to the modified work as a whole. If
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136 1.1 skrll 3. You may copy and distribute the Program (or a work based on it,
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139 1.1 skrll
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175 1.1 skrll 4. You may not copy, modify, sublicense, or distribute the Program
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192 1.1 skrll 6. Each time you redistribute the Program (or any work based on the
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200 1.1 skrll 7. If, as a consequence of a court judgment or allegation of patent
201 1.1 skrll infringement or for any other reason (not limited to patent issues),
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209 1.1 skrll all those who receive copies directly or indirectly through you, then
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213 1.1 skrll If any portion of this section is held invalid or unenforceable under
214 1.1 skrll any particular circumstance, the balance of the section is intended to
215 1.1 skrll apply and the section as a whole is intended to apply in other
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217 1.1 skrll
218 1.1 skrll It is not the purpose of this section to induce you to infringe any
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229 1.1 skrll This section is intended to make thoroughly clear what is believed to
230 1.1 skrll be a consequence of the rest of this License.
231 1.1 skrll
233 1.1 skrll 8. If the distribution and/or use of the Program is restricted in
234 1.1 skrll certain countries either by patents or by copyrighted interfaces, the
235 1.1 skrll original copyright holder who places the Program under this License
236 1.1 skrll may add an explicit geographical distribution limitation excluding
237 1.1 skrll those countries, so that distribution is permitted only in or among
238 1.1 skrll countries not thus excluded. In such case, this License incorporates
239 1.1 skrll the limitation as if written in the body of this License.
240 1.1 skrll
241 1.1 skrll 9. The Free Software Foundation may publish revised and/or new versions
242 1.1 skrll of the General Public License from time to time. Such new versions will
243 1.1 skrll be similar in spirit to the present version, but may differ in detail to
244 1.1 skrll address new problems or concerns.
245 1.1 skrll
246 1.1 skrll Each version is given a distinguishing version number. If the Program
247 1.1 skrll specifies a version number of this License which applies to it and "any
248 1.1 skrll later version", you have the option of following the terms and conditions
249 1.1 skrll either of that version or of any later version published by the Free
250 1.1 skrll Software Foundation. If the Program does not specify a version number of
251 1.1 skrll this License, you may choose any version ever published by the Free Software
252 1.1 skrll Foundation.
253 1.1 skrll
254 1.1 skrll 10. If you wish to incorporate parts of the Program into other free
255 1.1 skrll programs whose distribution conditions are different, write to the author
256 1.1 skrll to ask for permission. For software which is copyrighted by the Free
257 1.1 skrll Software Foundation, write to the Free Software Foundation; we sometimes
258 1.1 skrll make exceptions for this. Our decision will be guided by the two goals
259 1.1 skrll of preserving the free status of all derivatives of our free software and
260 1.1 skrll of promoting the sharing and reuse of software generally.
261 1.1 skrll
262 1.1 skrll NO WARRANTY
263 1.1 skrll
264 1.1 skrll 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
265 1.1 skrll FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
266 1.1 skrll OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
267 1.1 skrll PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
268 1.1 skrll OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
269 1.1 skrll MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
270 1.1 skrll TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
271 1.1 skrll PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
272 1.1 skrll REPAIR OR CORRECTION.
273 1.1 skrll
274 1.1 skrll 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
275 1.1 skrll WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
276 1.1 skrll REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
277 1.1 skrll INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
278 1.1 skrll OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
279 1.1 skrll TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
280 1.1 skrll YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
281 1.1 skrll PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
282 1.1 skrll POSSIBILITY OF SUCH DAMAGES.
283 1.1 skrll
284 1.1 skrll END OF TERMS AND CONDITIONS
285 1.1 skrll
287 1.1 skrll How to Apply These Terms to Your New Programs
288 1.1 skrll
289 1.1 skrll If you develop a new program, and you want it to be of the greatest
290 1.1 skrll possible use to the public, the best way to achieve this is to make it
291 1.1 skrll free software which everyone can redistribute and change under these terms.
292 1.1 skrll
293 1.1 skrll To do so, attach the following notices to the program. It is safest
294 1.1 skrll to attach them to the start of each source file to most effectively
295 1.1 skrll convey the exclusion of warranty; and each file should have at least
296 1.1 skrll the "copyright" line and a pointer to where the full notice is found.
297 1.1 skrll
298 1.1 skrll <one line to give the program's name and a brief idea of what it does.>
299 1.1 skrll Copyright (C) <year> <name of author>
300 1.1 skrll
301 1.1 skrll This program is free software; you can redistribute it and/or modify
302 1.1 skrll it under the terms of the GNU General Public License as published by
303 1.1 skrll the Free Software Foundation; either version 2 of the License, or
304 1.1 skrll (at your option) any later version.
305 1.1 skrll
306 1.1 skrll This program is distributed in the hope that it will be useful,
307 1.1 skrll but WITHOUT ANY WARRANTY; without even the implied warranty of
308 1.1 skrll MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
309 1.1 skrll GNU General Public License for more details.
310 1.1 skrll
311 1.1 skrll You should have received a copy of the GNU General Public License
312 1.1 skrll along with this program; if not, write to the Free Software
313 1.1 skrll Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
314 1.1 skrll
315 1.1 skrll
316 1.1 skrll Also add information on how to contact you by electronic and paper mail.
317 1.1 skrll
318 1.1 skrll If the program is interactive, make it output a short notice like this
319 1.1 skrll when it starts in an interactive mode:
320 1.1 skrll
321 1.1 skrll Gnomovision version 69, Copyright (C) year name of author
322 1.1 skrll Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
323 1.1 skrll This is free software, and you are welcome to redistribute it
324 1.1 skrll under certain conditions; type `show c' for details.
325 1.1 skrll
326 1.1 skrll The hypothetical commands `show w' and `show c' should show the appropriate
327 1.1 skrll parts of the General Public License. Of course, the commands you use may
328 1.1 skrll be called something other than `show w' and `show c'; they could even be
329 1.1 skrll mouse-clicks or menu items--whatever suits your program.
330 1.1 skrll
331 1.1 skrll You should also get your employer (if you work as a programmer) or your
332 1.1 skrll school, if any, to sign a "copyright disclaimer" for the program, if
333 1.1 skrll necessary. Here is a sample; alter the names:
334 1.1 skrll
335 1.1 skrll Yoyodyne, Inc., hereby disclaims all copyright interest in the program
336 1.1 skrll `Gnomovision' (which makes passes at compilers) written by James Hacker.
337 1.1 skrll
338 1.1 skrll <signature of Ty Coon>, 1 April 1989
339 1.1 skrll Ty Coon, President of Vice
340 1.1 skrll
341 This General Public License does not permit incorporating your program into
342 proprietary programs. If your program is a subroutine library, you may
343 consider it more useful to permit linking proprietary applications with the
344 library. If this is what you want to do, use the GNU Library General
345 Public License instead of this License.
346