1 <?xml version="1.0" encoding="iso-8859-1"?>
3 <title>GNU General Public License</title>
7 Copyright 1989, 1991 Free Software Foundation, Inc.
9 Free Software Foundation, Inc. 51 Franklin Street, Fifth Floor,
10 Boston, MA 02110-1301 USA
12 Everyone is permitted to copy and distribute verbatim copies of this
13 license document, but changing it is not allowed.
18 <title>Preamble</title>
20 The licenses for most software are designed to take away your
21 freedom to share and change it. By contrast, the GNU General Public
22 License is intended to guarantee your freedom to share and change
23 free software - to make sure the software is free for all its users.
24 This General Public License applies to most of the Free Software
25 Foundation's software and to any other program whose authors commit
26 to using it. (Some other Free Software Foundation software is covered
27 by the GNU Library General Public License instead.) You can apply it
28 to your programs, too.
30 When we speak of free software, we are referring to freedom, not price.
31 Our General Public Licenses are designed to make sure that you have the
32 freedom to distribute copies of free software (and charge for this
33 service if you wish), that you receive source code or can get it if you
34 want it, that you can change the software or use pieces of it in new free
35 programs; and that you know you can do these things.
37 To protect your rights, we need to make restrictions that forbid anyone
38 to deny you these rights or to ask you to surrender the rights. These
39 restrictions translate to certain responsibilities for you if you
40 distribute copies of the software, or if you modify it.
42 For example, if you distribute copies of such a program, whether gratis
43 or for a fee, you must give the recipients all the rights that you have.
44 You must make sure that they, too, receive or can get the source code.
45 And you must show them these terms so they know their rights.
47 We protect your rights with two steps:
52 copyright the software, and
57 offer you this license which gives you legal permission to copy,
58 distribute and/or modify the software.
63 Also, for each author's protection and ours, we want to make certain that
64 everyone understands that there is no warranty for this free software. If
65 the software is modified by someone else and passed on, we want its
66 recipients to know that what they have is not the original, so that any
67 problems introduced by others will not reflect on the original authors'
70 Finally, any free program is threatened constantly by software patents.
71 We wish to avoid the danger that redistributors of a free program will
72 individually obtain patent licenses, in effect making the program
73 proprietary. To prevent this, we have made it clear that any patent must
74 be licensed for everyone's free use or not licensed at all.
76 The precise terms and conditions for copying, distribution and
81 <title>TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
84 <title>Section 0</title>
86 This License applies to any program or other work which contains a
87 notice placed by the copyright holder saying it may be distributed
88 under the terms of this General Public License. The "Program", below,
89 refers to any such program or work, and a
90 <quote>work based on the Program
92 the Program or any derivative work under copyright law: that is to say,
93 a work containing the Program or a portion of it, either verbatim or
94 with modifications and/or translated into another language.
95 (Hereinafter, translation is included without limitation in the term
97 </quote>.) Each licensee is addressed as <quote>you</quote>.
99 Activities other than copying, distribution and modification are not
100 covered by this License; they are outside its scope. The act of running
101 the Program is not restricted, and the output from the Program is
102 covered only if its contents constitute a work based on the Program
103 (independent of having been made by running the Program). Whether that
104 is true depends on what the Program does.
108 <title>Section 1</title>
110 You may copy and distribute verbatim copies of the Program's source
111 code as you receive it, in any medium, provided that you conspicuously
112 and appropriately publish on each copy an appropriate copyright notice
113 and disclaimer of warranty;
114 keep intact all the notices that refer to this License and to the
115 absence of any warranty; and give any other recipients of the Program
116 a copy of this License along with the Program.
118 You may charge a fee for the physical act of transferring a copy, and
119 you may at your option offer warranty protection in exchange for a fee.
123 <title>Section 2</title>
125 You may modify your copy or copies of the Program or any portion of it,
126 thus forming a work based on the Program, and copy and distribute such
127 modifications or work under the terms of Section 1 above, provided
128 that you also meet all of these conditions:
133 You must cause the modified files to carry prominent notices
134 stating that you changed the files and the date of any change.
139 You must cause any work that you distribute or publish, that in
140 whole or in part contains or is derived from the Program or any
141 part thereof, to be licensed as a whole at no charge to all third
142 parties under the terms of this License.
147 If the modified program normally reads commands interactively
148 when run, you must cause it, when started running for such
149 interactive use in the most ordinary way, to print or display an
150 announcement including an appropriate copyright notice and a
151 notice that there is no warranty (or else, saying that you
152 provide a warranty) and that users may redistribute the program
153 under these conditions, and telling the user how to view a copy
160 If the Program itself is interactive but does not normally
161 print such an announcement, your work based on the Program
162 is not required to print an announcement.)
168 These requirements apply to the modified work as a whole. If
169 identifiable sections of that work are not derived from the Program,
170 and can be reasonably considered independent and separate works in
171 themselves, then this License, and its terms, do not apply to those
172 sections when you distribute them as separate works. But when you
173 distribute the same sections as part of a whole which is a work based
174 on the Program, the distribution of the whole must be on the terms of
175 this License, whose permissions for other licensees extend to the
176 entire whole, and thus to each and every part regardless of who wrote
179 Thus, it is not the intent of this section to claim rights or contest
180 your rights to work written entirely by you; rather, the intent is to
181 exercise the right to control the distribution of derivative or
182 collective works based on the Program.
184 In addition, mere aggregation of another work not based on the Program
185 with the Program (or with a work based on the Program) on a volume of
186 a storage or distribution medium does not bring the other work under
187 the scope of this License.
194 You may copy and distribute the Program (or a work based on it, under
195 Section 2 in object code or executable form under the terms of
196 Sections 1 and 2 above provided that you also do one of the following:
201 Accompany it with the complete corresponding machine-readable
202 source code, which must be distributed under the terms of
203 Sections 1 and 2 above on a medium customarily used for software
209 Accompany it with a written offer, valid for at least three
210 years, to give any third party, for a charge no more than your
211 cost of physically performing source distribution, a complete
212 machine-readable copy of the corresponding source code, to be
213 distributed under the terms of Sections 1 and 2 above on a medium
214 customarily used for software interchange; or,
219 Accompany it with the information you received as to the offer to
220 distribute corresponding source code. (This alternative is
221 allowed only for noncommercial distribution and only if you
222 received the program in object code or executable form with such
223 an offer, in accord with Subsection b above.)
228 The source code for a work means the preferred form of the work for
229 making modifications to it. For an executable work, complete source
230 code means all the source code for all modules it contains, plus any
231 associated interface definition files, plus the scripts used to control
232 compilation and installation of the executable. However, as a special
233 exception, the source code distributed need not include anything that
234 is normally distributed (in either source or binary form) with the
235 major components (compiler, kernel, and so on) of the operating system
236 on which the executable runs, unless that component itself accompanies
239 If distribution of executable or object code is made by offering
240 access to copy from a designated place, then offering equivalent access
241 to copy the source code from the same place counts as distribution of
242 the source code, even though third parties are not compelled to copy
243 the source along with the object code.
250 You may not copy, modify, sublicense, or distribute the Program except
251 as expressly provided under this License. Any attempt otherwise to
252 copy, modify, sublicense or distribute the Program is void, and will
253 automatically terminate your rights under this License. However,
254 parties who have received copies, or rights, from you under this
255 License will not have their licenses terminated so long as such parties
256 remain in full compliance.
263 You are not required to accept this License, since you have not signed
264 it. However, nothing else grants you permission to modify or distribute
265 the Program or its derivative works. These actions are prohibited by
266 law if you do not accept this License. Therefore, by modifying
267 or distributing the Program (or any work based on the Program), you
268 indicate your acceptance of this License to do so, and all its terms
269 and conditions for copying, distributing or modifying the Program or
277 Each time you redistribute the Program (or any work based on the
278 Program), the recipient automatically receives a license from the
279 original licensor to copy, distribute or modify the Program subject
280 to these terms and conditions. You may not impose any further
281 restrictions on the recipients' exercise of the rights granted herein.
282 You are not responsible for enforcing compliance by third parties to
290 If, as a consequence of a court judgment or allegation of patent
291 infringement or for any other reason (not limited to patent issues),
292 conditions are imposed on you (whether by court order, agreement or
293 otherwise) that contradict the conditions of this License, they do not
294 excuse you from the conditions of this License. If you cannot
295 distribute so as to satisfy simultaneously your obligations under this
296 License and any other pertinent obligations, then as a consequence
297 you may not distribute the Program at all. For example, if a patent
298 license would not permit royalty-free redistribution of the Program by
299 all those who receive copies directly or indirectly through you, then
300 the only way you could satisfy both it and this License would be
301 to refrain entirely from distribution of the Program.
303 If any portion of this section is held invalid or unenforceable under
304 any particular circumstance, the balance of the section is intended to
305 apply and the section as a whole is intended to apply in other
308 It is not the purpose of this section to induce you to infringe any
309 patents or other property right claims or to contest validity of any
310 such claims; this section has the sole purpose of protecting the
311 integrity of the free software distribution system, which is
312 implemented by public license practices. Many people have made generous
313 contributions to the wide range of software distributed through that
314 system in reliance on consistent application of that system; it is up
315 to the author/donor to decide if he or she is willing to distribute
316 software through any other system and a licensee cannot impose that
320 This section is intended to make thoroughly clear what is believed to
321 be a consequence of the rest of this License.
328 If the distribution and/or use of the Program is restricted in certain
329 countries either by patents or by copyrighted interfaces, the original
330 copyright holder who places the Program under this License may add an
331 explicit geographical distribution limitation excluding those
332 countries, so that distribution is permitted only in or among countries
333 not thus excluded. In such case, this License incorporates the
334 limitation as if written in the body of this License.
341 The Free Software Foundation may publish revised and/or new versions
342 of the General Public License from time to time. Such new versions will
343 be similar in spirit to the present version, but may differ in detail
344 to address new problems or concerns.
346 Each version is given a distinguishing version number. If the Program
347 specifies a version number of this License which applies to it and
348 "any later version", you have the option of following the terms and
349 conditions either of that version or of any later version published by
350 the Free Software Foundation. If the Program does not specify a version
351 number of this License, you may choose any version ever published by
352 the Free Software Foundation.
359 If you wish to incorporate parts of the Program into other free
360 programs whose distribution conditions are different, write to the
361 author to ask for permission. For software which is copyrighted
362 by the Free Software Foundation, write to the Free Software Foundation;
363 we sometimes make exceptions for this. Our decision will be guided by
364 the two goals of preserving the free status of all derivatives of our
365 free software and of promoting the sharing and reuse of software
377 BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
378 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
379 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
380 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
381 EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
382 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
383 THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS
384 WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
385 ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
392 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
393 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
394 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR
395 DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL
396 DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM
397 (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
398 INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF
399 THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR
400 OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
402 END OF TERMS AND CONDITIONS
407 <title>How to Apply These Terms to Your New Programs
410 If you develop a new program, and you want it to be of the greatest
411 possible use to the public, the best way to achieve this is to make it
412 free software which everyone can redistribute and change under these
415 To do so, attach the following notices to the program. It is safest
416 to attach them to the start of each source file to most effectively
417 convey the exclusion of warranty; and each file should have at least
418 the "copyright" line and a pointer to where the full notice is found.
420 <one line to give the program's name and a brief idea of what it
422 Copyright (C) <year> <name of author>
424 This program is free software; you can redistribute it and/or modify
425 it under the terms of the GNU General Public License as published by
426 the Free Software Foundation; either version 2 of the License, or
427 (at your option) any later version.
429 This program is distributed in the hope that it will be useful,
430 but WITHOUT ANY WARRANTY; without even the implied warranty of
431 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
432 GNU General Public License for more details.
434 You should have received a copy of the GNU General Public License
435 along with this program; if not, write to the Free Software
436 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
439 Also add information on how to contact you by electronic and paper mail.
441 If the program is interactive, make it output a short notice like this
442 when it starts in an interactive mode:
444 Gnomovision version 69, Copyright (C) year name of author
445 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
446 This is free software, and you are welcome to redistribute it
447 under certain conditions; type `show c' for details.
449 The hypothetical commands `show w' and `show c' should show the
450 appropriate parts of the General Public License. Of course, the commands
451 you use may be called something other than `show w' and `show c'; they
452 could even be mouse-clicks or menu items--whatever suits your program.
454 You should also get your employer (if you work as a programmer) or your
455 school, if any, to sign a "copyright disclaimer" for the program, if
456 necessary. Here is a sample; alter the names:
458 Yoyodyne, Inc., hereby disclaims all copyright interest in the program
459 `Gnomovision' (which makes passes at compilers) written by James Hacker.
461 <signature of Ty Coon>, 1 April 1989
462 Ty Coon, President of Vice
464 This General Public License does not permit incorporating your program
465 into proprietary programs. If your program is a subroutine library, you
466 may consider it more useful to permit linking proprietary applications
467 with the library. If this is what you want to do, use the GNU Library
468 General Public License instead of this License.