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license was messed up by wget; corrected.
author Robert McIntyre <rlm@mit.edu>
date Tue, 26 Feb 2013 14:12:24 +0000
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1 GNU GENERAL PUBLIC LICENSE 1 GNU GENERAL PUBLIC LICENSE
2 Version 3, 29 June 2007 2 Version 2, June 1991
3 3
4 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> 4 Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
5 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
5 Everyone is permitted to copy and distribute verbatim copies 6 Everyone is permitted to copy and distribute verbatim copies
6 of this license document, but changing it is not allowed. 7 of this license document, but changing it is not allowed.
7 8
8 Preamble 9 Preamble
9 10
10 The GNU General Public License is a free, copyleft license for 11 The licenses for most software are designed to take away your
11 software and other kinds of works. 12 freedom to share and change it. By contrast, the GNU General Public
12 13 License is intended to guarantee your freedom to share and change free
13 The licenses for most software and other practical works are designed 14 software--to make sure the software is free for all its users. This
14 to take away your freedom to share and change the works. By contrast, 15 General Public License applies to most of the Free Software
15 the GNU General Public License is intended to guarantee your freedom to 16 Foundation's software and to any other program whose authors commit to
16 share and change all versions of a program--to make sure it remains free 17 using it. (Some other Free Software Foundation software is covered by
17 software for all its users. We, the Free Software Foundation, use the 18 the GNU Lesser General Public License instead.) You can apply it to
18 GNU General Public License for most of our software; it applies also to
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20 your programs, too. 19 your programs, too.
21 20
22 When we speak of free software, we are referring to freedom, not 21 When we speak of free software, we are referring to freedom, not
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40 Developers that use the GNU GPL protect your rights with two steps: 39 We protect your rights with two steps: (1) copyright the software, and
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459 give under the previous paragraph, plus a right to possession of the
460 Corresponding Source of the work from the predecessor in interest, if
461 the predecessor has it or can get it with reasonable efforts.
462
463 You may not impose any further restrictions on the exercise of the
464 rights granted or affirmed under this License. For example, you may
465 not impose a license fee, royalty, or other charge for exercise of
466 rights granted under this License, and you may not initiate litigation
467 (including a cross-claim or counterclaim in a lawsuit) alleging that
468 any patent claim is infringed by making, using, selling, offering for
469 sale, or importing the Program or any portion of it.
470
471 11. Patents.
472
473 A "contributor" is a copyright holder who authorizes use under this
474 License of the Program or a work on which the Program is based. The
475 work thus licensed is called the contributor's "contributor version".
476
477 A contributor's "essential patent claims" are all patent claims
478 owned or controlled by the contributor, whether already acquired or
479 hereafter acquired, that would be infringed by some manner, permitted
480 by this License, of making, using, or selling its contributor version,
481 but do not include claims that would be infringed only as a
482 consequence of further modification of the contributor version. For
483 purposes of this definition, "control" includes the right to grant
484 patent sublicenses in a manner consistent with the requirements of
485 this License. 195 this License.
486 196
487 Each contributor grants you a non-exclusive, worldwide, royalty-free 197 7. If, as a consequence of a court judgment or allegation of patent
488 patent license under the contributor's essential patent claims, to 198 infringement or for any other reason (not limited to patent issues),
489 make, use, sell, offer for sale, import and otherwise run, modify and 199 conditions are imposed on you (whether by court order, agreement or
490 propagate the contents of its contributor version.
491
492 In the following three paragraphs, a "patent license" is any express
493 agreement or commitment, however denominated, not to enforce a patent
494 (such as an express permission to practice a patent or covenant not to
495 sue for patent infringement). To "grant" such a patent license to a
496 party means to make such an agreement or commitment not to enforce a
497 patent against the party.
498
499 If you convey a covered work, knowingly relying on a patent license,
500 and the Corresponding Source of the work is not available for anyone
501 to copy, free of charge and under the terms of this License, through a
502 publicly available network server or other readily accessible means,
503 then you must either (1) cause the Corresponding Source to be so
504 available, or (2) arrange to deprive yourself of the benefit of the
505 patent license for this particular work, or (3) arrange, in a manner
506 consistent with the requirements of this License, to extend the patent
507 license to downstream recipients. "Knowingly relying" means you have
508 actual knowledge that, but for the patent license, your conveying the
509 covered work in a country, or your recipient's use of the covered work
510 in a country, would infringe one or more identifiable patents in that
511 country that you have reason to believe are valid.
512
513 If, pursuant to or in connection with a single transaction or
514 arrangement, you convey, or propagate by procuring conveyance of, a
515 covered work, and grant a patent license to some of the parties
516 receiving the covered work authorizing them to use, propagate, modify
517 or convey a specific copy of the covered work, then the patent license
518 you grant is automatically extended to all recipients of the covered
519 work and works based on it.
520
521 A patent license is "discriminatory" if it does not include within
522 the scope of its coverage, prohibits the exercise of, or is
523 conditioned on the non-exercise of one or more of the rights that are
524 specifically granted under this License. You may not convey a covered
525 work if you are a party to an arrangement with a third party that is
526 in the business of distributing software, under which you make payment
527 to the third party based on the extent of your activity of conveying
528 the work, and under which the third party grants, to any of the
529 parties who would receive the covered work from you, a discriminatory
530 patent license (a) in connection with copies of the covered work
531 conveyed by you (or copies made from those copies), or (b) primarily
532 for and in connection with specific products or compilations that
533 contain the covered work, unless you entered into that arrangement,
534 or that patent license was granted, prior to 28 March 2007.
535
536 Nothing in this License shall be construed as excluding or limiting
537 any implied license or other defenses to infringement that may
538 otherwise be available to you under applicable patent law.
539
540 12. No Surrender of Others' Freedom.
541
542 If conditions are imposed on you (whether by court order, agreement or
543 otherwise) that contradict the conditions of this License, they do not 200 otherwise) that contradict the conditions of this License, they do not
544 excuse you from the conditions of this License. If you cannot convey a 201 excuse you from the conditions of this License. If you cannot
545 covered work so as to satisfy simultaneously your obligations under this 202 distribute so as to satisfy simultaneously your obligations under this
546 License and any other pertinent obligations, then as a consequence you may 203 License and any other pertinent obligations, then as a consequence you
547 not convey it at all. For example, if you agree to terms that obligate you 204 may not distribute the Program at all. For example, if a patent
548 to collect a royalty for further conveying from those to whom you convey 205 license would not permit royalty-free redistribution of the Program by
549 the Program, the only way you could satisfy both those terms and this 206 all those who receive copies directly or indirectly through you, then
550 License would be to refrain entirely from conveying the Program. 207 the only way you could satisfy both it and this License would be to
551 208 refrain entirely from distribution of the Program.
552 13. Use with the GNU Affero General Public License. 209
553 210 If any portion of this section is held invalid or unenforceable under
554 Notwithstanding any other provision of this License, you have 211 any particular circumstance, the balance of the section is intended to
555 permission to link or combine any covered work with a work licensed 212 apply and the section as a whole is intended to apply in other
556 under version 3 of the GNU Affero General Public License into a single 213 circumstances.
557 combined work, and to convey the resulting work. The terms of this 214
558 License will continue to apply to the part which is the covered work, 215 It is not the purpose of this section to induce you to infringe any
559 but the special requirements of the GNU Affero General Public License, 216 patents or other property right claims or to contest validity of any
560 section 13, concerning interaction through a network will apply to the 217 such claims; this section has the sole purpose of protecting the
561 combination as such. 218 integrity of the free software distribution system, which is
562 219 implemented by public license practices. Many people have made
563 14. Revised Versions of this License. 220 generous contributions to the wide range of software distributed
564 221 through that system in reliance on consistent application of that
565 The Free Software Foundation may publish revised and/or new versions of 222 system; it is up to the author/donor to decide if he or she is willing
566 the GNU General Public License from time to time. Such new versions will 223 to distribute software through any other system and a licensee cannot
224 impose that choice.
225
226 This section is intended to make thoroughly clear what is believed to
227 be a consequence of the rest of this License.
228
229 8. If the distribution and/or use of the Program is restricted in
230 certain countries either by patents or by copyrighted interfaces, the
231 original copyright holder who places the Program under this License
232 may add an explicit geographical distribution limitation excluding
233 those countries, so that distribution is permitted only in or among
234 countries not thus excluded. In such case, this License incorporates
235 the limitation as if written in the body of this License.
236
237 9. The Free Software Foundation may publish revised and/or new versions
238 of the General Public License from time to time. Such new versions will
567 be similar in spirit to the present version, but may differ in detail to 239 be similar in spirit to the present version, but may differ in detail to
568 address new problems or concerns. 240 address new problems or concerns.
569 241
570 Each version is given a distinguishing version number. If the 242 Each version is given a distinguishing version number. If the Program
571 Program specifies that a certain numbered version of the GNU General 243 specifies a version number of this License which applies to it and "any
572 Public License "or any later version" applies to it, you have the 244 later version", you have the option of following the terms and conditions
573 option of following the terms and conditions either of that numbered 245 either of that version or of any later version published by the Free
574 version or of any later version published by the Free Software 246 Software Foundation. If the Program does not specify a version number of
575 Foundation. If the Program does not specify a version number of the 247 this License, you may choose any version ever published by the Free Software
576 GNU General Public License, you may choose any version ever published 248 Foundation.
577 by the Free Software Foundation. 249
578 250 10. If you wish to incorporate parts of the Program into other free
579 If the Program specifies that a proxy can decide which future 251 programs whose distribution conditions are different, write to the author
580 versions of the GNU General Public License can be used, that proxy's 252 to ask for permission. For software which is copyrighted by the Free
581 public statement of acceptance of a version permanently authorizes you 253 Software Foundation, write to the Free Software Foundation; we sometimes
582 to choose that version for the Program. 254 make exceptions for this. Our decision will be guided by the two goals
583 255 of preserving the free status of all derivatives of our free software and
584 Later license versions may give you additional or different 256 of promoting the sharing and reuse of software generally.
585 permissions. However, no additional obligations are imposed on any 257
586 author or copyright holder as a result of your choosing to follow a 258 NO WARRANTY
587 later version. 259
588 260 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
589 15. Disclaimer of Warranty. 261 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
590 262 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
591 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 263 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
592 APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 264 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
593 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 265 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
594 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 266 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
595 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 267 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
596 PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 268 REPAIR OR CORRECTION.
597 IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 269
598 ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 270 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
599 271 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
600 16. Limitation of Liability. 272 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
601 273 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
602 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 274 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
603 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 275 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
604 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 276 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
605 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 277 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
606 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 278 POSSIBILITY OF SUCH DAMAGES.
607 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
608 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
609 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
610 SUCH DAMAGES.
611
612 17. Interpretation of Sections 15 and 16.
613
614 If the disclaimer of warranty and limitation of liability provided
615 above cannot be given local legal effect according to their terms,
616 reviewing courts shall apply local law that most closely approximates
617 an absolute waiver of all civil liability in connection with the
618 Program, unless a warranty or assumption of liability accompanies a
619 copy of the Program in return for a fee.
620 279
621 END OF TERMS AND CONDITIONS 280 END OF TERMS AND CONDITIONS
622 281
623 How to Apply These Terms to Your New Programs 282 How to Apply These Terms to Your New Programs
624 283
626 possible use to the public, the best way to achieve this is to make it 285 possible use to the public, the best way to achieve this is to make it
627 free software which everyone can redistribute and change under these terms. 286 free software which everyone can redistribute and change under these terms.
628 287
629 To do so, attach the following notices to the program. It is safest 288 To do so, attach the following notices to the program. It is safest
630 to attach them to the start of each source file to most effectively 289 to attach them to the start of each source file to most effectively
631 state the exclusion of warranty; and each file should have at least 290 convey the exclusion of warranty; and each file should have at least
632 the "copyright" line and a pointer to where the full notice is found. 291 the "copyright" line and a pointer to where the full notice is found.
633 292
634 <one line to give the program's name and a brief idea of what it does.> 293 <one line to give the program's name and a brief idea of what it does.>
635 Copyright (C) <year> <name of author> 294 Copyright (C) <year> <name of author>
636 295
637 This program is free software: you can redistribute it and/or modify 296 This program is free software; you can redistribute it and/or modify
638 it under the terms of the GNU General Public License as published by 297 it under the terms of the GNU General Public License as published by
639 the Free Software Foundation, either version 3 of the License, or 298 the Free Software Foundation; either version 2 of the License, or
640 (at your option) any later version. 299 (at your option) any later version.
641 300
642 This program is distributed in the hope that it will be useful, 301 This program is distributed in the hope that it will be useful,
643 but WITHOUT ANY WARRANTY; without even the implied warranty of 302 but WITHOUT ANY WARRANTY; without even the implied warranty of
644 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 303 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
645 GNU General Public License for more details. 304 GNU General Public License for more details.
646 305
647 You should have received a copy of the GNU General Public License 306 You should have received a copy of the GNU General Public License along
648 along with this program. If not, see <http://www.gnu.org/licenses/>. 307 with this program; if not, write to the Free Software Foundation, Inc.,
308 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
649 309
650 Also add information on how to contact you by electronic and paper mail. 310 Also add information on how to contact you by electronic and paper mail.
651 311
652 If the program does terminal interaction, make it output a short 312 If the program is interactive, make it output a short notice like this
653 notice like this when it starts in an interactive mode: 313 when it starts in an interactive mode:
654 314
655 <program> Copyright (C) <year> <name of author> 315 Gnomovision version 69, Copyright (C) year name of author
656 This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 316 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 This is free software, and you are welcome to redistribute it 317 This is free software, and you are welcome to redistribute it
658 under certain conditions; type `show c' for details. 318 under certain conditions; type `show c' for details.
659 319
660 The hypothetical commands `show w' and `show c' should show the appropriate 320 The hypothetical commands `show w' and `show c' should show the appropriate
661 parts of the General Public License. Of course, your program's commands 321 parts of the General Public License. Of course, the commands you use may
662 might be different; for a GUI interface, you would use an "about box". 322 be called something other than `show w' and `show c'; they could even be
663 323 mouse-clicks or menu items--whatever suits your program.
664 You should also get your employer (if you work as a programmer) or school, 324
665 if any, to sign a "copyright disclaimer" for the program, if necessary. 325 You should also get your employer (if you work as a programmer) or your
666 For more information on this, and how to apply and follow the GNU GPL, see 326 school, if any, to sign a "copyright disclaimer" for the program, if
667 <http://www.gnu.org/licenses/>. 327 necessary. Here is a sample; alter the names:
668 328
669 The GNU General Public License does not permit incorporating your program 329 Yoyodyne, Inc., hereby disclaims all copyright interest in the program
670 into proprietary programs. If your program is a subroutine library, you 330 `Gnomovision' (which makes passes at compilers) written by James Hacker.
671 may consider it more useful to permit linking proprietary applications with 331
672 the library. If this is what you want to do, use the GNU Lesser General 332 <signature of Ty Coon>, 1 April 1989
673 Public License instead of this License. But first, please read 333 Ty Coon, President of Vice
674 <http://www.gnu.org/philosophy/why-not-lgpl.html>. 334
335 This General Public License does not permit incorporating your program into
336 proprietary programs. If your program is a subroutine library, you may
337 consider it more useful to permit linking proprietary applications with the
338 library. If this is what you want to do, use the GNU Lesser General
339 Public License instead of this License.