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LICENSE.md 34 KiB

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