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127 <li><a name="TOC1" href="gpl-2.0.html#SEC1">GNU GENERAL PUBLIC
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130 <ul>
131 <li><a name="TOC2" href="gpl-2.0.html#SEC2">Preamble</a></li>
132 <li><a name="TOC3" href="gpl-2.0.html#SEC3">TERMS AND CONDITIONS
133 FOR COPYING, DISTRIBUTION AND MODIFICATION</a></li>
134 <li><a name="TOC4" href="gpl-2.0.html#SEC4">How to Apply These
135 Terms to Your New Programs</a></li>
136 </ul></li>
137 </ul>
139 <hr />
141 <h3><a name="SEC1" href="gpl-2.0.html#TOC1">GNU GENERAL PUBLIC LICENSE</a></h3>
143 Version 2, June 1991
144 </p>
146 <pre>
147 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
148 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
150 Everyone is permitted to copy and distribute verbatim copies
151 of this license document, but changing it is not allowed.
152 </pre>
154 <h3><a name="preamble"></a><a name="SEC2" href="gpl-2.0.html#TOC2">Preamble</a></h3>
157 The licenses for most software are designed to take away your
158 freedom to share and change it. By contrast, the GNU General Public
159 License is intended to guarantee your freedom to share and change free
160 software--to make sure the software is free for all its users. This
161 General Public License applies to most of the Free Software
162 Foundation's software and to any other program whose authors commit to
163 using it. (Some other Free Software Foundation software is covered by
164 the GNU Lesser General Public License instead.) You can apply it to
165 your programs, too.
166 </p>
169 When we speak of free software, we are referring to freedom, not
170 price. Our General Public Licenses are designed to make sure that you
171 have the freedom to distribute copies of free software (and charge for
172 this service if you wish), that you receive source code or can get it
173 if you want it, that you can change the software or use pieces of it
174 in new free programs; and that you know you can do these things.
175 </p>
178 To protect your rights, we need to make restrictions that forbid
179 anyone to deny you these rights or to ask you to surrender the rights.
180 These restrictions translate to certain responsibilities for you if you
181 distribute copies of the software, or if you modify it.
182 </p>
185 For example, if you distribute copies of such a program, whether
186 gratis or for a fee, you must give the recipients all the rights that
187 you have. You must make sure that they, too, receive or can get the
188 source code. And you must show them these terms so they know their
189 rights.
190 </p>
193 We protect your rights with two steps: (1) copyright the software, and
194 (2) offer you this license which gives you legal permission to copy,
195 distribute and/or modify the software.
196 </p>
199 Also, for each author's protection and ours, we want to make certain
200 that everyone understands that there is no warranty for this free
201 software. If the software is modified by someone else and passed on, we
202 want its recipients to know that what they have is not the original, so
203 that any problems introduced by others will not reflect on the original
204 authors' reputations.
205 </p>
208 Finally, any free program is threatened constantly by software
209 patents. We wish to avoid the danger that redistributors of a free
210 program will individually obtain patent licenses, in effect making the
211 program proprietary. To prevent this, we have made it clear that any
212 patent must be licensed for everyone's free use or not licensed at all.
213 </p>
216 The precise terms and conditions for copying, distribution and
217 modification follow.
218 </p>
221 <h3><a name="terms"></a><a name="SEC3" href="gpl-2.0.html#TOC3">TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION</a></h3>
224 <a name="section0"></a><p>
225 <strong>0.</strong>
226 This License applies to any program or other work which contains
227 a notice placed by the copyright holder saying it may be distributed
228 under the terms of this General Public License. The "Program", below,
229 refers to any such program or work, and a "work based on the Program"
230 means either the Program or any derivative work under copyright law:
231 that is to say, a work containing the Program or a portion of it,
232 either verbatim or with modifications and/or translated into another
233 language. (Hereinafter, translation is included without limitation in
234 the term "modification".) Each licensee is addressed as "you".
235 </p>
238 Activities other than copying, distribution and modification are not
239 covered by this License; they are outside its scope. The act of
240 running the Program is not restricted, and the output from the Program
241 is covered only if its contents constitute a work based on the
242 Program (independent of having been made by running the Program).
243 Whether that is true depends on what the Program does.
244 </p>
246 <a name="section1"></a><p>
247 <strong>1.</strong>
248 You may copy and distribute verbatim copies of the Program's
249 source code as you receive it, in any medium, provided that you
250 conspicuously and appropriately publish on each copy an appropriate
251 copyright notice and disclaimer of warranty; keep intact all the
252 notices that refer to this License and to the absence of any warranty;
253 and give any other recipients of the Program a copy of this License
254 along with the Program.
255 </p>
258 You may charge a fee for the physical act of transferring a copy, and
259 you may at your option offer warranty protection in exchange for a fee.
260 </p>
262 <a name="section2"></a><p>
263 <strong>2.</strong>
264 You may modify your copy or copies of the Program or any portion
265 of it, thus forming a work based on the Program, and copy and
266 distribute such modifications or work under the terms of Section 1
267 above, provided that you also meet all of these conditions:
268 </p>
270 <dl>
271 <dt></dt>
272 <dd>
273 <strong>a)</strong>
274 You must cause the modified files to carry prominent notices
275 stating that you changed the files and the date of any change.
276 </dd>
277 <dt></dt>
278 <dd>
279 <strong>b)</strong>
280 You must cause any work that you distribute or publish, that in
281 whole or in part contains or is derived from the Program or any
282 part thereof, to be licensed as a whole at no charge to all third
283 parties under the terms of this License.
284 </dd>
285 <dt></dt>
286 <dd>
287 <strong>c)</strong>
288 If the modified program normally reads commands interactively
289 when run, you must cause it, when started running for such
290 interactive use in the most ordinary way, to print or display an
291 announcement including an appropriate copyright notice and a
292 notice that there is no warranty (or else, saying that you provide
293 a warranty) and that users may redistribute the program under
294 these conditions, and telling the user how to view a copy of this
295 License. (Exception: if the Program itself is interactive but
296 does not normally print such an announcement, your work based on
297 the Program is not required to print an announcement.)
298 </dd>
299 </dl>
302 These requirements apply to the modified work as a whole. If
303 identifiable sections of that work are not derived from the Program,
304 and can be reasonably considered independent and separate works in
305 themselves, then this License, and its terms, do not apply to those
306 sections when you distribute them as separate works. But when you
307 distribute the same sections as part of a whole which is a work based
308 on the Program, the distribution of the whole must be on the terms of
309 this License, whose permissions for other licensees extend to the
310 entire whole, and thus to each and every part regardless of who wrote it.
311 </p>
314 Thus, it is not the intent of this section to claim rights or contest
315 your rights to work written entirely by you; rather, the intent is to
316 exercise the right to control the distribution of derivative or
317 collective works based on the Program.
318 </p>
321 In addition, mere aggregation of another work not based on the Program
322 with the Program (or with a work based on the Program) on a volume of
323 a storage or distribution medium does not bring the other work under
324 the scope of this License.
325 </p>
327 <a name="section3"></a><p>
328 <strong>3.</strong>
329 You may copy and distribute the Program (or a work based on it,
330 under Section 2) in object code or executable form under the terms of
331 Sections 1 and 2 above provided that you also do one of the following:
332 </p>
334 <!-- we use this doubled UL to get the sub-sections indented, -->
335 <!-- while making the bullets as unobvious as possible. -->
337 <dl>
338 <dt></dt>
339 <dd>
340 <strong>a)</strong>
341 Accompany it with the complete corresponding machine-readable
342 source code, which must be distributed under the terms of Sections
343 1 and 2 above on a medium customarily used for software interchange; or,
344 </dd>
345 <dt></dt>
346 <dd>
347 <strong>b)</strong>
348 Accompany it with a written offer, valid for at least three
349 years, to give any third party, for a charge no more than your
350 cost of physically performing source distribution, a complete
351 machine-readable copy of the corresponding source code, to be
352 distributed under the terms of Sections 1 and 2 above on a medium
353 customarily used for software interchange; or,
354 </dd>
355 <dt></dt>
356 <dd>
357 <strong>c)</strong>
358 Accompany it with the information you received as to the offer
359 to distribute corresponding source code. (This alternative is
360 allowed only for noncommercial distribution and only if you
361 received the program in object code or executable form with such
362 an offer, in accord with Subsection b above.)
363 </dd>
364 </dl>
367 The source code for a work means the preferred form of the work for
368 making modifications to it. For an executable work, complete source
369 code means all the source code for all modules it contains, plus any
370 associated interface definition files, plus the scripts used to
371 control compilation and installation of the executable. However, as a
372 special exception, the source code distributed need not include
373 anything that is normally distributed (in either source or binary
374 form) with the major components (compiler, kernel, and so on) of the
375 operating system on which the executable runs, unless that component
376 itself accompanies the executable.
377 </p>
380 If distribution of executable or object code is made by offering
381 access to copy from a designated place, then offering equivalent
382 access to copy the source code from the same place counts as
383 distribution of the source code, even though third parties are not
384 compelled to copy the source along with the object code.
385 </p>
387 <a name="section4"></a><p>
388 <strong>4.</strong>
389 You may not copy, modify, sublicense, or distribute the Program
390 except as expressly provided under this License. Any attempt
391 otherwise to copy, modify, sublicense or distribute the Program is
392 void, and will automatically terminate your rights under this License.
393 However, parties who have received copies, or rights, from you under
394 this License will not have their licenses terminated so long as such
395 parties remain in full compliance.
396 </p>
398 <a name="section5"></a><p>
399 <strong>5.</strong>
400 You are not required to accept this License, since you have not
401 signed it. However, nothing else grants you permission to modify or
402 distribute the Program or its derivative works. These actions are
403 prohibited by law if you do not accept this License. Therefore, by
404 modifying or distributing the Program (or any work based on the
405 Program), you indicate your acceptance of this License to do so, and
406 all its terms and conditions for copying, distributing or modifying
407 the Program or works based on it.
408 </p>
410 <a name="section6"></a><p>
411 <strong>6.</strong>
412 Each time you redistribute the Program (or any work based on the
413 Program), the recipient automatically receives a license from the
414 original licensor to copy, distribute or modify the Program subject to
415 these terms and conditions. You may not impose any further
416 restrictions on the recipients' exercise of the rights granted herein.
417 You are not responsible for enforcing compliance by third parties to
418 this License.
419 </p>
421 <a name="section7"></a><p>
422 <strong>7.</strong>
423 If, as a consequence of a court judgment or allegation of patent
424 infringement or for any other reason (not limited to patent issues),
425 conditions are imposed on you (whether by court order, agreement or
426 otherwise) that contradict the conditions of this License, they do not
427 excuse you from the conditions of this License. If you cannot
428 distribute so as to satisfy simultaneously your obligations under this
429 License and any other pertinent obligations, then as a consequence you
430 may not distribute the Program at all. For example, if a patent
431 license would not permit royalty-free redistribution of the Program by
432 all those who receive copies directly or indirectly through you, then
433 the only way you could satisfy both it and this License would be to
434 refrain entirely from distribution of the Program.
435 </p>
438 If any portion of this section is held invalid or unenforceable under
439 any particular circumstance, the balance of the section is intended to
440 apply and the section as a whole is intended to apply in other
441 circumstances.
442 </p>
445 It is not the purpose of this section to induce you to infringe any
446 patents or other property right claims or to contest validity of any
447 such claims; this section has the sole purpose of protecting the
448 integrity of the free software distribution system, which is
449 implemented by public license practices. Many people have made
450 generous contributions to the wide range of software distributed
451 through that system in reliance on consistent application of that
452 system; it is up to the author/donor to decide if he or she is willing
453 to distribute software through any other system and a licensee cannot
454 impose that choice.
455 </p>
458 This section is intended to make thoroughly clear what is believed to
459 be a consequence of the rest of this License.
460 </p>
462 <a name="section8"></a><p>
463 <strong>8.</strong>
464 If the distribution and/or use of the Program is restricted in
465 certain countries either by patents or by copyrighted interfaces, the
466 original copyright holder who places the Program under this License
467 may add an explicit geographical distribution limitation excluding
468 those countries, so that distribution is permitted only in or among
469 countries not thus excluded. In such case, this License incorporates
470 the limitation as if written in the body of this License.
471 </p>
473 <a name="section9"></a><p>
474 <strong>9.</strong>
475 The Free Software Foundation may publish revised and/or new versions
476 of the General Public License from time to time. Such new versions will
477 be similar in spirit to the present version, but may differ in detail to
478 address new problems or concerns.
479 </p>
482 Each version is given a distinguishing version number. If the Program
483 specifies a version number of this License which applies to it and "any
484 later version", you have the option of following the terms and conditions
485 either of that version or of any later version published by the Free
486 Software Foundation. If the Program does not specify a version number of
487 this License, you may choose any version ever published by the Free Software
488 Foundation.
489 </p>
491 <a name="section10"></a><p>
492 <strong>10.</strong>
493 If you wish to incorporate parts of the Program into other free
494 programs whose distribution conditions are different, write to the author
495 to ask for permission. For software which is copyrighted by the Free
496 Software Foundation, write to the Free Software Foundation; we sometimes
497 make exceptions for this. Our decision will be guided by the two goals
498 of preserving the free status of all derivatives of our free software and
499 of promoting the sharing and reuse of software generally.
500 </p>
502 <a name="section11"></a><p><strong>NO WARRANTY</strong></p>
505 <strong>11.</strong>
506 BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
507 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
508 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
509 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
510 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
511 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
512 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
513 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
514 REPAIR OR CORRECTION.
515 </p>
517 <a name="section12"></a><p>
518 <strong>12.</strong>
519 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
520 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
521 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
522 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
523 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
524 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
525 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
526 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
527 POSSIBILITY OF SUCH DAMAGES.
528 </p>
530 <h3>END OF TERMS AND CONDITIONS</h3>
532 <h3><a name="howto"></a><a name="SEC4" href="gpl-2.0.html#TOC4">How to Apply These Terms to Your New Programs</a></h3>
535 If you develop a new program, and you want it to be of the greatest
536 possible use to the public, the best way to achieve this is to make it
537 free software which everyone can redistribute and change under these terms.
538 </p>
541 To do so, attach the following notices to the program. It is safest
542 to attach them to the start of each source file to most effectively
543 convey the exclusion of warranty; and each file should have at least
544 the "copyright" line and a pointer to where the full notice is found.
545 </p>
547 <pre>
548 <var>one line to give the program's name and an idea of what it does.</var>
549 Copyright (C) <var>yyyy</var> <var>name of author</var>
551 This program is free software; you can redistribute it and/or
552 modify it under the terms of the GNU General Public License
553 as published by the Free Software Foundation; either version 2
554 of the License, or (at your option) any later version.
556 This program is distributed in the hope that it will be useful,
557 but WITHOUT ANY WARRANTY; without even the implied warranty of
558 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
559 GNU General Public License for more details.
561 You should have received a copy of the GNU General Public License
562 along with this program; if not, write to the Free Software
563 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
564 </pre>
567 Also add information on how to contact you by electronic and paper mail.
568 </p>
571 If the program is interactive, make it output a short notice like this
572 when it starts in an interactive mode:
573 </p>
575 <pre>
576 Gnomovision version 69, Copyright (C) <var>year</var> <var>name of author</var>
577 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details
578 type `show w'. This is free software, and you are welcome
579 to redistribute it under certain conditions; type `show c'
580 for details.
581 </pre>
584 The hypothetical commands <samp>`show w'</samp> and <samp>`show c'</samp> should show
585 the appropriate parts of the General Public License. Of course, the
586 commands you use may be called something other than <samp>`show w'</samp> and
587 <samp>`show c'</samp>; they could even be mouse-clicks or menu items--whatever
588 suits your program.
589 </p>
592 You should also get your employer (if you work as a programmer) or your
593 school, if any, to sign a "copyright disclaimer" for the program, if
594 necessary. Here is a sample; alter the names:
595 </p>
598 <pre>
599 Yoyodyne, Inc., hereby disclaims all copyright
600 interest in the program `Gnomovision'
601 (which makes passes at compilers) written
602 by James Hacker.
604 <var>signature of Ty Coon</var>, 1 April 1989
605 Ty Coon, President of Vice
606 </pre>
609 This General Public License does not permit incorporating your program into
610 proprietary programs. If your program is a subroutine library, you may
611 consider it more useful to permit linking proprietary applications with the
612 library. If this is what you want to do, use the
613 <a href="/licenses/lgpl.html">GNU Lesser General Public License</a>
614 instead of this License.
615 </p>
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789 </p>
792 Updated:
793 <!-- timestamp start -->
794 $Date: 2009/06/17 19:21:05 $
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796 </p>
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799 <div id="translations">
800 <h4>Translations of this page</h4>
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818 <!-- Czech -->
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