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1 <?xml version="1.0" encoding="UTF-8"?>
2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
3 <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head>
4 <title>GNU General Public License</title>
5 </head><body style="font-family:Verdana,sans-serif;margin-left:8%;margin-right:8%;text-align:justify">
6
7 <h3 style="text-align: center">GNU GENERAL PUBLIC LICENSE</h3>
8 <p style="text-align: center">Version 3, 29 June 2007</p>
9
10 <p>Copyright &copy; 2007 Free Software Foundation, Inc. &lt;<a href="http://fsf.org">http://fsf.org/</a>&gt;</p><p>
11  Everyone is permitted to copy and distribute verbatim copies
12  of this license document, but changing it is not allowed.</p>
13
14 <h3><a name="preamble"></a>Preamble</h3>
15
16 <p>The GNU General Public License is a free, copyleft license for
17 software and other kinds of works.</p>
18
19 <p>The licenses for most software and other practical works are designed
20 to take away your freedom to share and change the works.  By contrast,
21 the GNU General Public License is intended to guarantee your freedom to
22 share and change all versions of a program--to make sure it remains free
23 software for all its users.  We, the Free Software Foundation, use the
24 GNU General Public License for most of our software; it applies also to
25 any other work released this way by its authors.  You can apply it to
26 your programs, too.</p>
27
28 <p>When we speak of free software, we are referring to freedom, not
29 price.  Our General Public Licenses are designed to make sure that you
30 have the freedom to distribute copies of free software (and charge for
31 them if you wish), that you receive source code or can get it if you
32 want it, that you can change the software or use pieces of it in new
33 free programs, and that you know you can do these things.</p>
34
35 <p>To protect your rights, we need to prevent others from denying you
36 these rights or asking you to surrender the rights.  Therefore, you have
37 certain responsibilities if you distribute copies of the software, or if
38 you modify it: responsibilities to respect the freedom of others.</p>
39
40 <p>For example, if you distribute copies of such a program, whether
41 gratis or for a fee, you must pass on to the recipients the same
42 freedoms that you received.  You must make sure that they, too, receive
43 or can get the source code.  And you must show them these terms so they
44 know their rights.</p>
45
46 <p>Developers that use the GNU GPL protect your rights with two steps:
47 (1) assert copyright on the software, and (2) offer you this License
48 giving you legal permission to copy, distribute and/or modify it.</p>
49
50 <p>For the developers&#8217; and authors&#8217; protection, the GPL clearly explains
51 that there is no warranty for this free software.  For both users&#8217; and
52 authors&#8217; sake, the GPL requires that modified versions be marked as
53 changed, so that their problems will not be attributed erroneously to
54 authors of previous versions.</p>
55
56 <p>Some devices are designed to deny users access to install or run
57 modified versions of the software inside them, although the manufacturer
58 can do so.  This is fundamentally incompatible with the aim of
59 protecting users&#8217; freedom to change the software.  The systematic
60 pattern of such abuse occurs in the area of products for individuals to
61 use, which is precisely where it is most unacceptable.  Therefore, we
62 have designed this version of the GPL to prohibit the practice for those
63 products.  If such problems arise substantially in other domains, we
64 stand ready to extend this provision to those domains in future versions
65 of the GPL, as needed to protect the freedom of users.</p>
66
67 <p>Finally, every program is threatened constantly by software patents.
68 States should not allow patents to restrict development and use of
69 software on general-purpose computers, but in those that do, we wish to
70 avoid the special danger that patents applied to a free program could
71 make it effectively proprietary.  To prevent this, the GPL assures that
72 patents cannot be used to render the program non-free.</p>
73
74 <p>The precise terms and conditions for copying, distribution and
75 modification follow.</p>
76
77 <h3><a name="terms"></a>TERMS AND CONDITIONS</h3>
78
79 <h4><a name="section0"></a>0. Definitions.</h4>
80
81 <p>&#8220;This License&#8221; refers to version 3 of the GNU General Public License.</p>
82
83 <p>&#8220;Copyright&#8221; also means copyright-like laws that apply to other kinds of
84 works, such as semiconductor masks.</p>
85
86 <p>&#8220;The Program&#8221; refers to any copyrightable work licensed under this
87 License.  Each licensee is addressed as &#8220;you&#8221;.  &#8220;Licensees&#8221; and
88 &#8220;recipients&#8221; may be individuals or organizations.</p>
89
90 <p>To &#8220;modify&#8221; a work means to copy from or adapt all or part of the work
91 in a fashion requiring copyright permission, other than the making of an
92 exact copy.  The resulting work is called a &#8220;modified version&#8221; of the
93 earlier work or a work &#8220;based on&#8221; the earlier work.</p>
94
95 <p>A &#8220;covered work&#8221; means either the unmodified Program or a work based
96 on the Program.</p>
97
98 <p>To &#8220;propagate&#8221; a work means to do anything with it that, without
99 permission, would make you directly or secondarily liable for
100 infringement under applicable copyright law, except executing it on a
101 computer or modifying a private copy.  Propagation includes copying,
102 distribution (with or without modification), making available to the
103 public, and in some countries other activities as well.</p>
104
105 <p>To &#8220;convey&#8221; a work means any kind of propagation that enables other
106 parties to make or receive copies.  Mere interaction with a user through
107 a computer network, with no transfer of a copy, is not conveying.</p>
108
109 <p>An interactive user interface displays &#8220;Appropriate Legal Notices&#8221;
110 to the extent that it includes a convenient and prominently visible
111 feature that (1) displays an appropriate copyright notice, and (2)
112 tells the user that there is no warranty for the work (except to the
113 extent that warranties are provided), that licensees may convey the
114 work under this License, and how to view a copy of this License.  If
115 the interface presents a list of user commands or options, such as a
116 menu, a prominent item in the list meets this criterion.</p>
117
118 <h4><a name="section1"></a>1. Source Code.</h4>
119
120 <p>The &#8220;source code&#8221; for a work means the preferred form of the work
121 for making modifications to it.  &#8220;Object code&#8221; means any non-source
122 form of a work.</p>
123
124 <p>A &#8220;Standard Interface&#8221; means an interface that either is an official
125 standard defined by a recognized standards body, or, in the case of
126 interfaces specified for a particular programming language, one that
127 is widely used among developers working in that language.</p>
128
129 <p>The &#8220;System Libraries&#8221; of an executable work include anything, other
130 than the work as a whole, that (a) is included in the normal form of
131 packaging a Major Component, but which is not part of that Major
132 Component, and (b) serves only to enable use of the work with that
133 Major Component, or to implement a Standard Interface for which an
134 implementation is available to the public in source code form.  A
135 &#8220;Major Component&#8221;, in this context, means a major essential component
136 (kernel, window system, and so on) of the specific operating system
137 (if any) on which the executable work runs, or a compiler used to
138 produce the work, or an object code interpreter used to run it.</p>
139
140 <p>The &#8220;Corresponding Source&#8221; for a work in object code form means all
141 the source code needed to generate, install, and (for an executable
142 work) run the object code and to modify the work, including scripts to
143 control those activities.  However, it does not include the work&#8217;s
144 System Libraries, or general-purpose tools or generally available free
145 programs which are used unmodified in performing those activities but
146 which are not part of the work.  For example, Corresponding Source
147 includes interface definition files associated with source files for
148 the work, and the source code for shared libraries and dynamically
149 linked subprograms that the work is specifically designed to require,
150 such as by intimate data communication or control flow between those
151 subprograms and other parts of the work.</p>
152
153 <p>The Corresponding Source need not include anything that users
154 can regenerate automatically from other parts of the Corresponding
155 Source.</p>
156
157 <p>The Corresponding Source for a work in source code form is that
158 same work.</p>
159
160 <h4><a name="section2"></a>2. Basic Permissions.</h4>
161
162 <p>All rights granted under this License are granted for the term of
163 copyright on the Program, and are irrevocable provided the stated
164 conditions are met.  This License explicitly affirms your unlimited
165 permission to run the unmodified Program.  The output from running a
166 covered work is covered by this License only if the output, given its
167 content, constitutes a covered work.  This License acknowledges your
168 rights of fair use or other equivalent, as provided by copyright law.</p>
169
170 <p>You may make, run and propagate covered works that you do not
171 convey, without conditions so long as your license otherwise remains
172 in force.  You may convey covered works to others for the sole purpose
173 of having them make modifications exclusively for you, or provide you
174 with facilities for running those works, provided that you comply with
175 the terms of this License in conveying all material for which you do
176 not control copyright.  Those thus making or running the covered works
177 for you must do so exclusively on your behalf, under your direction
178 and control, on terms that prohibit them from making any copies of
179 your copyrighted material outside their relationship with you.</p>
180
181 <p>Conveying under any other circumstances is permitted solely under
182 the conditions stated below.  Sublicensing is not allowed; section 10
183 makes it unnecessary.</p>
184
185 <h4><a name="section3"></a>3. Protecting Users&#8217; Legal Rights From Anti-Circumvention Law.</h4>
186
187 <p>No covered work shall be deemed part of an effective technological
188 measure under any applicable law fulfilling obligations under article
189 11 of the WIPO copyright treaty adopted on 20 December 1996, or
190 similar laws prohibiting or restricting circumvention of such
191 measures.</p>
192
193 <p>When you convey a covered work, you waive any legal power to forbid
194 circumvention of technological measures to the extent such circumvention
195 is effected by exercising rights under this License with respect to
196 the covered work, and you disclaim any intention to limit operation or
197 modification of the work as a means of enforcing, against the work&#8217;s
198 users, your or third parties&#8217; legal rights to forbid circumvention of
199 technological measures.</p>
200
201 <h4><a name="section4"></a>4. Conveying Verbatim Copies.</h4>
202
203 <p>You may convey verbatim copies of the Program&#8217;s source code as you
204 receive it, in any medium, provided that you conspicuously and
205 appropriately publish on each copy an appropriate copyright notice;
206 keep intact all notices stating that this License and any
207 non-permissive terms added in accord with section 7 apply to the code;
208 keep intact all notices of the absence of any warranty; and give all
209 recipients a copy of this License along with the Program.</p>
210
211 <p>You may charge any price or no price for each copy that you convey,
212 and you may offer support or warranty protection for a fee.</p>
213
214 <h4><a name="section5"></a>5. Conveying Modified Source Versions.</h4>
215
216 <p>You may convey a work based on the Program, or the modifications to
217 produce it from the Program, in the form of source code under the
218 terms of section 4, provided that you also meet all of these conditions:</p>
219
220 <ul style="list-style-type:lower-alpha">
221 <li>The work must carry prominent notices stating that you modified
222     it, and giving a relevant date.</li>
223
224 <li>The work must carry prominent notices stating that it is
225     released under this License and any conditions added under section
226     7.  This requirement modifies the requirement in section 4 to
227     &#8220;keep intact all notices&#8221;.</li>
228
229 <li>You must license the entire work, as a whole, under this
230     License to anyone who comes into possession of a copy.  This
231     License will therefore apply, along with any applicable section 7
232     additional terms, to the whole of the work, and all its parts,
233     regardless of how they are packaged.  This License gives no
234     permission to license the work in any other way, but it does not
235     invalidate such permission if you have separately received it.</li>
236
237 <li>If the work has interactive user interfaces, each must display
238     Appropriate Legal Notices; however, if the Program has interactive
239     interfaces that do not display Appropriate Legal Notices, your
240     work need not make them do so.</li>
241 </ul>
242
243 <p>A compilation of a covered work with other separate and independent
244 works, which are not by their nature extensions of the covered work,
245 and which are not combined with it such as to form a larger program,
246 in or on a volume of a storage or distribution medium, is called an
247 &#8220;aggregate&#8221; if the compilation and its resulting copyright are not
248 used to limit the access or legal rights of the compilation&#8217;s users
249 beyond what the individual works permit.  Inclusion of a covered work
250 in an aggregate does not cause this License to apply to the other
251 parts of the aggregate.</p>
252
253 <h4><a name="section6"></a>6. Conveying Non-Source Forms.</h4>
254
255 <p>You may convey a covered work in object code form under the terms
256 of sections 4 and 5, provided that you also convey the
257 machine-readable Corresponding Source under the terms of this License,
258 in one of these ways:</p>
259
260 <ul style="list-style-type:lower-alpha">
261 <li>Convey the object code in, or embodied in, a physical product
262     (including a physical distribution medium), accompanied by the
263     Corresponding Source fixed on a durable physical medium
264     customarily used for software interchange.</li>
265
266 <li>Convey the object code in, or embodied in, a physical product
267     (including a physical distribution medium), accompanied by a
268     written offer, valid for at least three years and valid for as
269     long as you offer spare parts or customer support for that product
270     model, to give anyone who possesses the object code either (1) a
271     copy of the Corresponding Source for all the software in the
272     product that is covered by this License, on a durable physical
273     medium customarily used for software interchange, for a price no
274     more than your reasonable cost of physically performing this
275     conveying of source, or (2) access to copy the
276     Corresponding Source from a network server at no charge.</li>
277
278 <li>Convey individual copies of the object code with a copy of the
279     written offer to provide the Corresponding Source.  This
280     alternative is allowed only occasionally and noncommercially, and
281     only if you received the object code with such an offer, in accord
282     with subsection 6b.</li>
283
284 <li>Convey the object code by offering access from a designated
285     place (gratis or for a charge), and offer equivalent access to the
286     Corresponding Source in the same way through the same place at no
287     further charge.  You need not require recipients to copy the
288     Corresponding Source along with the object code.  If the place to
289     copy the object code is a network server, the Corresponding Source
290     may be on a different server (operated by you or a third party)
291     that supports equivalent copying facilities, provided you maintain
292     clear directions next to the object code saying where to find the
293     Corresponding Source.  Regardless of what server hosts the
294     Corresponding Source, you remain obligated to ensure that it is
295     available for as long as needed to satisfy these requirements.</li>
296
297 <li>Convey the object code using peer-to-peer transmission, provided
298     you inform other peers where the object code and Corresponding
299     Source of the work are being offered to the general public at no
300     charge under subsection 6d.</li>
301 </ul>
302
303 <p>A separable portion of the object code, whose source code is excluded
304 from the Corresponding Source as a System Library, need not be
305 included in conveying the object code work.</p>
306
307 <p>A &#8220;User Product&#8221; is either (1) a &#8220;consumer product&#8221;, which means any
308 tangible personal property which is normally used for personal, family,
309 or household purposes, or (2) anything designed or sold for incorporation
310 into a dwelling.  In determining whether a product is a consumer product,
311 doubtful cases shall be resolved in favor of coverage.  For a particular
312 product received by a particular user, &#8220;normally used&#8221; refers to a
313 typical or common use of that class of product, regardless of the status
314 of the particular user or of the way in which the particular user
315 actually uses, or expects or is expected to use, the product.  A product
316 is a consumer product regardless of whether the product has substantial
317 commercial, industrial or non-consumer uses, unless such uses represent
318 the only significant mode of use of the product.</p>
319
320 <p>&#8220;Installation Information&#8221; for a User Product means any methods,
321 procedures, authorization keys, or other information required to install
322 and execute modified versions of a covered work in that User Product from
323 a modified version of its Corresponding Source.  The information must
324 suffice to ensure that the continued functioning of the modified object
325 code is in no case prevented or interfered with solely because
326 modification has been made.</p>
327
328 <p>If you convey an object code work under this section in, or with, or
329 specifically for use in, a User Product, and the conveying occurs as
330 part of a transaction in which the right of possession and use of the
331 User Product is transferred to the recipient in perpetuity or for a
332 fixed term (regardless of how the transaction is characterized), the
333 Corresponding Source conveyed under this section must be accompanied
334 by the Installation Information.  But this requirement does not apply
335 if neither you nor any third party retains the ability to install
336 modified object code on the User Product (for example, the work has
337 been installed in ROM).</p>
338
339 <p>The requirement to provide Installation Information does not include a
340 requirement to continue to provide support service, warranty, or updates
341 for a work that has been modified or installed by the recipient, or for
342 the User Product in which it has been modified or installed.  Access to a
343 network may be denied when the modification itself materially and
344 adversely affects the operation of the network or violates the rules and
345 protocols for communication across the network.</p>
346
347 <p>Corresponding Source conveyed, and Installation Information provided,
348 in accord with this section must be in a format that is publicly
349 documented (and with an implementation available to the public in
350 source code form), and must require no special password or key for
351 unpacking, reading or copying.</p>
352
353 <h4><a name="section7"></a>7. Additional Terms.</h4>
354
355 <p>&#8220;Additional permissions&#8221; are terms that supplement the terms of this
356 License by making exceptions from one or more of its conditions.
357 Additional permissions that are applicable to the entire Program shall
358 be treated as though they were included in this License, to the extent
359 that they are valid under applicable law.  If additional permissions
360 apply only to part of the Program, that part may be used separately
361 under those permissions, but the entire Program remains governed by
362 this License without regard to the additional permissions.</p>
363
364 <p>When you convey a copy of a covered work, you may at your option
365 remove any additional permissions from that copy, or from any part of
366 it.  (Additional permissions may be written to require their own
367 removal in certain cases when you modify the work.)  You may place
368 additional permissions on material, added by you to a covered work,
369 for which you have or can give appropriate copyright permission.</p>
370
371 <p>Notwithstanding any other provision of this License, for material you
372 add to a covered work, you may (if authorized by the copyright holders of
373 that material) supplement the terms of this License with terms:</p>
374
375 <ul style="list-style-type:lower-alpha">
376 <li>Disclaiming warranty or limiting liability differently from the
377     terms of sections 15 and 16 of this License; or</li>
378
379 <li>Requiring preservation of specified reasonable legal notices or
380     author attributions in that material or in the Appropriate Legal
381     Notices displayed by works containing it; or</li>
382
383 <li>Prohibiting misrepresentation of the origin of that material, or
384     requiring that modified versions of such material be marked in
385     reasonable ways as different from the original version; or</li>
386
387 <li>Limiting the use for publicity purposes of names of licensors or
388     authors of the material; or</li>
389
390 <li>Declining to grant rights under trademark law for use of some
391     trade names, trademarks, or service marks; or</li>
392
393 <li>Requiring indemnification of licensors and authors of that
394     material by anyone who conveys the material (or modified versions of
395     it) with contractual assumptions of liability to the recipient, for
396     any liability that these contractual assumptions directly impose on
397     those licensors and authors.</li>
398 </ul>
399
400 <p>All other non-permissive additional terms are considered &#8220;further
401 restrictions&#8221; within the meaning of section 10.  If the Program as you
402 received it, or any part of it, contains a notice stating that it is
403 governed by this License along with a term that is a further
404 restriction, you may remove that term.  If a license document contains
405 a further restriction but permits relicensing or conveying under this
406 License, you may add to a covered work material governed by the terms
407 of that license document, provided that the further restriction does
408 not survive such relicensing or conveying.</p>
409
410 <p>If you add terms to a covered work in accord with this section, you
411 must place, in the relevant source files, a statement of the
412 additional terms that apply to those files, or a notice indicating
413 where to find the applicable terms.</p>
414
415 <p>Additional terms, permissive or non-permissive, may be stated in the
416 form of a separately written license, or stated as exceptions;
417 the above requirements apply either way.</p>
418
419 <h4><a name="section8"></a>8. Termination.</h4>
420
421 <p>You may not propagate or modify a covered work except as expressly
422 provided under this License.  Any attempt otherwise to propagate or
423 modify it is void, and will automatically terminate your rights under
424 this License (including any patent licenses granted under the third
425 paragraph of section 11).</p>
426
427 <p>However, if you cease all violation of this License, then your
428 license from a particular copyright holder is reinstated (a)
429 provisionally, unless and until the copyright holder explicitly and
430 finally terminates your license, and (b) permanently, if the copyright
431 holder fails to notify you of the violation by some reasonable means
432 prior to 60 days after the cessation.</p>
433
434 <p>Moreover, your license from a particular copyright holder is
435 reinstated permanently if the copyright holder notifies you of the
436 violation by some reasonable means, this is the first time you have
437 received notice of violation of this License (for any work) from that
438 copyright holder, and you cure the violation prior to 30 days after
439 your receipt of the notice.</p>
440
441 <p>Termination of your rights under this section does not terminate the
442 licenses of parties who have received copies or rights from you under
443 this License.  If your rights have been terminated and not permanently
444 reinstated, you do not qualify to receive new licenses for the same
445 material under section 10.</p>
446
447 <h4><a name="section9"></a>9. Acceptance Not Required for Having Copies.</h4>
448
449 <p>You are not required to accept this License in order to receive or
450 run a copy of the Program.  Ancillary propagation of a covered work
451 occurring solely as a consequence of using peer-to-peer transmission
452 to receive a copy likewise does not require acceptance.  However,
453 nothing other than this License grants you permission to propagate or
454 modify any covered work.  These actions infringe copyright if you do
455 not accept this License.  Therefore, by modifying or propagating a
456 covered work, you indicate your acceptance of this License to do so.</p>
457
458 <h4><a name="section10"></a>10. Automatic Licensing of Downstream Recipients.</h4>
459
460 <p>Each time you convey a covered work, the recipient automatically
461 receives a license from the original licensors, to run, modify and
462 propagate that work, subject to this License.  You are not responsible
463 for enforcing compliance by third parties with this License.</p>
464
465 <p>An &#8220;entity transaction&#8221; is a transaction transferring control of an
466 organization, or substantially all assets of one, or subdividing an
467 organization, or merging organizations.  If propagation of a covered
468 work results from an entity transaction, each party to that
469 transaction who receives a copy of the work also receives whatever
470 licenses to the work the party&#8217;s predecessor in interest had or could
471 give under the previous paragraph, plus a right to possession of the
472 Corresponding Source of the work from the predecessor in interest, if
473 the predecessor has it or can get it with reasonable efforts.</p>
474
475 <p>You may not impose any further restrictions on the exercise of the
476 rights granted or affirmed under this License.  For example, you may
477 not impose a license fee, royalty, or other charge for exercise of
478 rights granted under this License, and you may not initiate litigation
479 (including a cross-claim or counterclaim in a lawsuit) alleging that
480 any patent claim is infringed by making, using, selling, offering for
481 sale, or importing the Program or any portion of it.</p>
482
483 <h4><a name="section11"></a>11. Patents.</h4>
484
485 <p>A &#8220;contributor&#8221; is a copyright holder who authorizes use under this
486 License of the Program or a work on which the Program is based.  The
487 work thus licensed is called the contributor&#8217;s &#8220;contributor version&#8221;.</p>
488
489 <p>A contributor&#8217;s &#8220;essential patent claims&#8221; are all patent claims
490 owned or controlled by the contributor, whether already acquired or
491 hereafter acquired, that would be infringed by some manner, permitted
492 by this License, of making, using, or selling its contributor version,
493 but do not include claims that would be infringed only as a
494 consequence of further modification of the contributor version.  For
495 purposes of this definition, &#8220;control&#8221; includes the right to grant
496 patent sublicenses in a manner consistent with the requirements of
497 this License.</p>
498
499 <p>Each contributor grants you a non-exclusive, worldwide, royalty-free
500 patent license under the contributor&#8217;s essential patent claims, to
501 make, use, sell, offer for sale, import and otherwise run, modify and
502 propagate the contents of its contributor version.</p>
503
504 <p>In the following three paragraphs, a &#8220;patent license&#8221; is any express
505 agreement or commitment, however denominated, not to enforce a patent
506 (such as an express permission to practice a patent or covenant not to
507 sue for patent infringement).  To &#8220;grant&#8221; such a patent license to a
508 party means to make such an agreement or commitment not to enforce a
509 patent against the party.</p>
510
511 <p>If you convey a covered work, knowingly relying on a patent license,
512 and the Corresponding Source of the work is not available for anyone
513 to copy, free of charge and under the terms of this License, through a
514 publicly available network server or other readily accessible means,
515 then you must either (1) cause the Corresponding Source to be so
516 available, or (2) arrange to deprive yourself of the benefit of the
517 patent license for this particular work, or (3) arrange, in a manner
518 consistent with the requirements of this License, to extend the patent
519 license to downstream recipients.  &#8220;Knowingly relying&#8221; means you have
520 actual knowledge that, but for the patent license, your conveying the
521 covered work in a country, or your recipient&#8217;s use of the covered work
522 in a country, would infringe one or more identifiable patents in that
523 country that you have reason to believe are valid.</p>
524
525
526 <p>If, pursuant to or in connection with a single transaction or
527 arrangement, you convey, or propagate by procuring conveyance of, a
528 covered work, and grant a patent license to some of the parties
529 receiving the covered work authorizing them to use, propagate, modify
530 or convey a specific copy of the covered work, then the patent license
531 you grant is automatically extended to all recipients of the covered
532 work and works based on it.</p>
533
534 <p>A patent license is &#8220;discriminatory&#8221; if it does not include within
535 the scope of its coverage, prohibits the exercise of, or is
536 conditioned on the non-exercise of one or more of the rights that are
537 specifically granted under this License.  You may not convey a covered
538 work if you are a party to an arrangement with a third party that is
539 in the business of distributing software, under which you make payment
540 to the third party based on the extent of your activity of conveying
541 the work, and under which the third party grants, to any of the
542 parties who would receive the covered work from you, a discriminatory
543 patent license (a) in connection with copies of the covered work
544 conveyed by you (or copies made from those copies), or (b) primarily
545 for and in connection with specific products or compilations that
546 contain the covered work, unless you entered into that arrangement,
547 or that patent license was granted, prior to 28 March 2007.</p>
548
549 <p>Nothing in this License shall be construed as excluding or limiting
550 any implied license or other defenses to infringement that may
551 otherwise be available to you under applicable patent law.</p>
552
553 <h4><a name="section12"></a>12. No Surrender of Others&#8217; Freedom.</h4>
554
555 <p>If conditions are imposed on you (whether by court order, agreement or
556 otherwise) that contradict the conditions of this License, they do not
557 excuse you from the conditions of this License.  If you cannot convey a
558 covered work so as to satisfy simultaneously your obligations under this
559 License and any other pertinent obligations, then as a consequence you may
560 not convey it at all.  For example, if you agree to terms that obligate you
561 to collect a royalty for further conveying from those to whom you convey
562 the Program, the only way you could satisfy both those terms and this
563 License would be to refrain entirely from conveying the Program.</p>
564
565 <h4><a name="section13"></a>13. Use with the GNU Affero General Public License.</h4>
566
567 <p>Notwithstanding any other provision of this License, you have
568 permission to link or combine any covered work with a work licensed
569 under version 3 of the GNU Affero General Public License into a single
570 combined work, and to convey the resulting work.  The terms of this
571 License will continue to apply to the part which is the covered work,
572 but the special requirements of the GNU Affero General Public License,
573 section 13, concerning interaction through a network will apply to the
574 combination as such.</p>
575
576 <h4><a name="section14"></a>14. Revised Versions of this License.</h4>
577
578 <p>The Free Software Foundation may publish revised and/or new versions of
579 the GNU General Public License from time to time.  Such new versions will
580 be similar in spirit to the present version, but may differ in detail to
581 address new problems or concerns.</p>
582
583 <p>Each version is given a distinguishing version number.  If the
584 Program specifies that a certain numbered version of the GNU General
585 Public License &#8220;or any later version&#8221; applies to it, you have the
586 option of following the terms and conditions either of that numbered
587 version or of any later version published by the Free Software
588 Foundation.  If the Program does not specify a version number of the
589 GNU General Public License, you may choose any version ever published
590 by the Free Software Foundation.</p>
591
592 <p>If the Program specifies that a proxy can decide which future
593 versions of the GNU General Public License can be used, that proxy&#8217;s
594 public statement of acceptance of a version permanently authorizes you
595 to choose that version for the Program.</p>
596
597 <p>Later license versions may give you additional or different
598 permissions.  However, no additional obligations are imposed on any
599 author or copyright holder as a result of your choosing to follow a
600 later version.</p>
601
602 <h4><a name="section15"></a>15. Disclaimer of Warranty.</h4>
603
604 <p>THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
605 APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
606 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM &#8220;AS IS&#8221; WITHOUT WARRANTY
607 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
608 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
609 PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
610 IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
611 ALL NECESSARY SERVICING, REPAIR OR CORRECTION.</p>
612
613 <h4><a name="section16"></a>16. Limitation of Liability.</h4>
614
615 <p>IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
616 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
617 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
618 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
619 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
620 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
621 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
622 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
623 SUCH DAMAGES.</p>
624
625 <h4><a name="section17"></a>17. Interpretation of Sections 15 and 16.</h4>
626
627 <p>If the disclaimer of warranty and limitation of liability provided
628 above cannot be given local legal effect according to their terms,
629 reviewing courts shall apply local law that most closely approximates
630 an absolute waiver of all civil liability in connection with the
631 Program, unless a warranty or assumption of liability accompanies a
632 copy of the Program in return for a fee.</p>
633
634 <p>END OF TERMS AND CONDITIONS</p>
635
636 <h3><a name="howto"></a>How to Apply These Terms to Your New Programs</h3>
637
638 <p>If you develop a new program, and you want it to be of the greatest
639 possible use to the public, the best way to achieve this is to make it
640 free software which everyone can redistribute and change under these terms.</p>
641
642 <p>To do so, attach the following notices to the program.  It is safest
643 to attach them to the start of each source file to most effectively
644 state the exclusion of warranty; and each file should have at least
645 the &#8220;copyright&#8221; line and a pointer to where the full notice is found.</p>
646
647 <pre>    &lt;one line to give the program&#8217;s name and a brief idea of what it does.&gt;
648     Copyright (C) &lt;year&gt;  &lt;name of author&gt;
649
650     This program is free software: you can redistribute it and/or modify
651     it under the terms of the GNU General Public License as published by
652     the Free Software Foundation, either version 3 of the License, or
653     (at your option) any later version.
654
655     This program is distributed in the hope that it will be useful,
656     but WITHOUT ANY WARRANTY; without even the implied warranty of
657     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
658     GNU General Public License for more details.
659
660     You should have received a copy of the GNU General Public License
661     along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;.
662 </pre>
663
664 <p>Also add information on how to contact you by electronic and paper mail.</p>
665
666 <p>If the program does terminal interaction, make it output a short
667 notice like this when it starts in an interactive mode:</p>
668
669 <pre>    &lt;program&gt;  Copyright (C) &lt;year&gt;  &lt;name of author&gt;
670
671     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
672     This is free software, and you are welcome to redistribute it
673     under certain conditions; type `show c' for details.
674 </pre>
675
676 <p>The hypothetical commands `show w' and `show c' should show the appropriate
677 parts of the General Public License.  Of course, your program&#8217;s commands
678 might be different; for a GUI interface, you would use an &#8220;about box&#8221;.</p>
679
680 <p>You should also get your employer (if you work as a programmer) or school,
681 if any, to sign a &#8220;copyright disclaimer&#8221; for the program, if necessary.
682 For more information on this, and how to apply and follow the GNU GPL, see
683 &lt;<a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>&gt;.</p>
684
685 <p>The GNU General Public License does not permit incorporating your program
686 into proprietary programs.  If your program is a subroutine library, you
687 may consider it more useful to permit linking proprietary applications with
688 the library.  If this is what you want to do, use the GNU Lesser General
689 Public License instead of this License.  But first, please read
690 &lt;<a href="http://www.gnu.org/philosophy/why-not-lgpl.html">http://www.gnu.org/philosophy/why-not-lgpl.html</a>&gt;.</p>
691
692 </body></html>
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