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0001 GNU GENERAL PUBLIC LICENSE 0002 0003 Version 3, 29 June 2007 0004 0005 Copyright © 2007 Free Software Foundation, Inc. <https://fsf.org/> 0006 0007 Everyone is permitted to copy and distribute verbatim copies of this license 0008 document, but changing it is not allowed. 0009 0010 Preamble 0011 0012 The GNU General Public License is a free, copyleft license for software and 0013 other kinds of works. 0014 0015 The licenses for most software and other practical works are designed to take 0016 away your freedom to share and change the works. By contrast, the GNU General 0017 Public License is intended to guarantee your freedom to share and change all 0018 versions of a program--to make sure it remains free software for all its users. 0019 We, the Free Software Foundation, use the GNU General Public License for most 0020 of our software; it applies also to any other work released this way by its 0021 authors. You can apply it to your programs, too. 0022 0023 When we speak of free software, we are referring to freedom, not price. Our 0024 General Public Licenses are designed to make sure that you have the freedom 0025 to distribute copies of free software (and charge for them if you wish), that 0026 you receive source code or can get it if you want it, that you can change 0027 the software or use pieces of it in new free programs, and that you know you 0028 can do these things. 0029 0030 To protect your rights, we need to prevent others from denying you these rights 0031 or asking you to surrender the rights. Therefore, you have certain responsibilities 0032 if you distribute copies of the software, or if you modify it: responsibilities 0033 to respect the freedom of others. 0034 0035 For example, if you distribute copies of such a program, whether gratis or 0036 for a fee, you must pass on to the recipients the same freedoms that you received. 0037 You must make sure that they, too, receive or can get the source code. And 0038 you must show them these terms so they know their rights. 0039 0040 Developers that use the GNU GPL protect your rights with two steps: (1) assert 0041 copyright on the software, and (2) offer you this License giving you legal 0042 permission to copy, distribute and/or modify it. 0043 0044 For the developers' and authors' protection, the GPL clearly explains that 0045 there is no warranty for this free software. For both users' and authors' 0046 sake, the GPL requires that modified versions be marked as changed, so that 0047 their problems will not be attributed erroneously to authors of previous versions. 0048 0049 Some devices are designed to deny users access to install or run modified 0050 versions of the software inside them, although the manufacturer can do so. 0051 This is fundamentally incompatible with the aim of protecting users' freedom 0052 to change the software. The systematic pattern of such abuse occurs in the 0053 area of products for individuals to use, which is precisely where it is most 0054 unacceptable. Therefore, we have designed this version of the GPL to prohibit 0055 the practice for those products. If such problems arise substantially in other 0056 domains, we stand ready to extend this provision to those domains in future 0057 versions of the GPL, as needed to protect the freedom of users. 0058 0059 Finally, every program is threatened constantly by software patents. States 0060 should not allow patents to restrict development and use of software on general-purpose 0061 computers, but in those that do, we wish to avoid the special danger that 0062 patents applied to a free program could make it effectively proprietary. To 0063 prevent this, the GPL assures that patents cannot be used to render the program 0064 non-free. 0065 0066 The precise terms and conditions for copying, distribution and modification 0067 follow. 0068 0069 TERMS AND CONDITIONS 0070 0071 0. Definitions. 0072 0073 "This License" refers to version 3 of the GNU General Public License. 0074 0075 "Copyright" also means copyright-like laws that apply to other kinds of works, 0076 such as semiconductor masks. 0077 0078 "The Program" refers to any copyrightable work licensed under this License. 0079 Each licensee is addressed as "you". "Licensees" and "recipients" may be individuals 0080 or organizations. 0081 0082 To "modify" a work means to copy from or adapt all or part of the work in 0083 a fashion requiring copyright permission, other than the making of an exact 0084 copy. The resulting work is called a "modified version" of the earlier work 0085 or a work "based on" the earlier work. 0086 0087 A "covered work" means either the unmodified Program or a work based on the 0088 Program. 0089 0090 To "propagate" a work means to do anything with it that, without permission, 0091 would make you directly or secondarily liable for infringement under applicable 0092 copyright law, except executing it on a computer or modifying a private copy. 0093 Propagation includes copying, distribution (with or without modification), 0094 making available to the public, and in some countries other activities as 0095 well. 0096 0097 To "convey" a work means any kind of propagation that enables other parties 0098 to make or receive copies. Mere interaction with a user through a computer 0099 network, with no transfer of a copy, is not conveying. 0100 0101 An interactive user interface displays "Appropriate Legal Notices" to the 0102 extent that it includes a convenient and prominently visible feature that 0103 (1) displays an appropriate copyright notice, and (2) tells the user that 0104 there is no warranty for the work (except to the extent that warranties are 0105 provided), that licensees may convey the work under this License, and how 0106 to view a copy of this License. If the interface presents a list of user commands 0107 or options, such as a menu, a prominent item in the list meets this criterion. 0108 0109 1. Source Code. 0110 0111 The "source code" for a work means the preferred form of the work for making 0112 modifications to it. 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The output from running a covered work is covered by this License 0152 only if the output, given its content, constitutes a covered work. This License 0153 acknowledges your rights of fair use or other equivalent, as provided by copyright 0154 law. 0155 0156 You may make, run and propagate covered works that you do not convey, without 0157 conditions so long as your license otherwise remains in force. You may convey 0158 covered works to others for the sole purpose of having them make modifications 0159 exclusively for you, or provide you with facilities for running those works, 0160 provided that you comply with the terms of this License in conveying all material 0161 for which you do not control copyright. Those thus making or running the covered 0162 works for you must do so exclusively on your behalf, under your direction 0163 and control, on terms that prohibit them from making any copies of your copyrighted 0164 material outside their relationship with you. 0165 0166 Conveying under any other circumstances is permitted solely under the conditions 0167 stated below. Sublicensing is not allowed; section 10 makes it unnecessary. 0168 0169 3. 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Conveying Non-Source Forms. 0229 0230 You may convey a covered work in object code form under the terms of sections 0231 4 and 5, provided that you also convey the machine-readable Corresponding 0232 Source under the terms of this License, in one of these ways: 0233 0234 a) Convey the object code in, or embodied in, a physical product (including 0235 a physical distribution medium), accompanied by the Corresponding Source fixed 0236 on a durable physical medium customarily used for software interchange. 0237 0238 b) Convey the object code in, or embodied in, a physical product (including 0239 a physical distribution medium), accompanied by a written offer, valid for 0240 at least three years and valid for as long as you offer spare parts or customer 0241 support for that product model, to give anyone who possesses the object code 0242 either (1) a copy of the Corresponding Source for all the software in the 0243 product that is covered by this License, on a durable physical medium customarily 0244 used for software interchange, for a price no more than your reasonable cost 0245 of physically performing this conveying of source, or (2) access to copy the 0246 Corresponding Source from a network server at no charge. 0247 0248 c) Convey individual copies of the object code with a copy of the written 0249 offer to provide the Corresponding Source. This alternative is allowed only 0250 occasionally and noncommercially, and only if you received the object code 0251 with such an offer, in accord with subsection 6b. 0252 0253 d) Convey the object code by offering access from a designated place (gratis 0254 or for a charge), and offer equivalent access to the Corresponding Source 0255 in the same way through the same place at no further charge. You need not 0256 require recipients to copy the Corresponding Source along with the object 0257 code. If the place to copy the object code is a network server, the Corresponding 0258 Source may be on a different server (operated by you or a third party) that 0259 supports equivalent copying facilities, provided you maintain clear directions 0260 next to the object code saying where to find the Corresponding Source. Regardless 0261 of what server hosts the Corresponding Source, you remain obligated to ensure 0262 that it is available for as long as needed to satisfy these requirements. 0263 0264 e) Convey the object code using peer-to-peer transmission, provided you inform 0265 other peers where the object code and Corresponding Source of the work are 0266 being offered to the general public at no charge under subsection 6d. 0267 0268 A separable portion of the object code, whose source code is excluded from 0269 the Corresponding Source as a System Library, need not be included in conveying 0270 the object code work. 0271 0272 A "User Product" is either (1) a "consumer product", which means any tangible 0273 personal property which is normally used for personal, family, or household 0274 purposes, or (2) anything designed or sold for incorporation into a dwelling. 0275 In determining whether a product is a consumer product, doubtful cases shall 0276 be resolved in favor of coverage. For a particular product received by a particular 0277 user, "normally used" refers to a typical or common use of that class of product, 0278 regardless of the status of the particular user or of the way in which the 0279 particular user actually uses, or expects or is expected to use, the product. 0280 A product is a consumer product regardless of whether the product has substantial 0281 commercial, industrial or non-consumer uses, unless such uses represent the 0282 only significant mode of use of the product. 0283 0284 "Installation Information" for a User Product means any methods, procedures, 0285 authorization keys, or other information required to install and execute modified 0286 versions of a covered work in that User Product from a modified version of 0287 its Corresponding Source. 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If additional permissions apply only to part of the Program, that part 0321 may be used separately under those permissions, but the entire Program remains 0322 governed by this License without regard to the additional permissions. 0323 0324 When you convey a copy of a covered work, you may at your option remove any 0325 additional permissions from that copy, or from any part of it. (Additional 0326 permissions may be written to require their own removal in certain cases when 0327 you modify the work.) You may place additional permissions on material, added 0328 by you to a covered work, for which you have or can give appropriate copyright 0329 permission. 0330 0331 Notwithstanding any other provision of this License, for material you add 0332 to a covered work, you may (if authorized by the copyright holders of that 0333 material) supplement the terms of this License with terms: 0334 0335 a) Disclaiming warranty or limiting liability differently from the terms of 0336 sections 15 and 16 of this License; or 0337 0338 b) Requiring preservation of specified reasonable legal notices or author 0339 attributions in that material or in the Appropriate Legal Notices displayed 0340 by works containing it; or 0341 0342 c) Prohibiting misrepresentation of the origin of that material, or requiring 0343 that modified versions of such material be marked in reasonable ways as different 0344 from the original version; or 0345 0346 d) Limiting the use for publicity purposes of names of licensors or authors 0347 of the material; or 0348 0349 e) Declining to grant rights under trademark law for use of some trade names, 0350 trademarks, or service marks; or 0351 0352 f) Requiring indemnification of licensors and authors of that material by 0353 anyone who conveys the material (or modified versions of it) with contractual 0354 assumptions of liability to the recipient, for any liability that these contractual 0355 assumptions directly impose on those licensors and authors. 0356 0357 All other non-permissive additional terms are considered "further restrictions" 0358 within the meaning of section 10. If the Program as you received it, or any 0359 part of it, contains a notice stating that it is governed by this License 0360 along with a term that is a further restriction, you may remove that term. 0361 If a license document contains a further restriction but permits relicensing 0362 or conveying under this License, you may add to a covered work material governed 0363 by the terms of that license document, provided that the further restriction 0364 does not survive such relicensing or conveying. 0365 0366 If you add terms to a covered work in accord with this section, you must place, 0367 in the relevant source files, a statement of the additional terms that apply 0368 to those files, or a notice indicating where to find the applicable terms. 0369 0370 Additional terms, permissive or non-permissive, may be stated in the form 0371 of a separately written license, or stated as exceptions; the above requirements 0372 apply either way. 0373 0374 8. Termination. 0375 0376 You may not propagate or modify a covered work except as expressly provided 0377 under this License. Any attempt otherwise to propagate or modify it is void, 0378 and will automatically terminate your rights under this License (including 0379 any patent licenses granted under the third paragraph of section 11). 0380 0381 However, if you cease all violation of this License, then your license from 0382 a particular copyright holder is reinstated (a) provisionally, unless and 0383 until the copyright holder explicitly and finally terminates your license, 0384 and (b) permanently, if the copyright holder fails to notify you of the violation 0385 by some reasonable means prior to 60 days after the cessation. 0386 0387 Moreover, your license from a particular copyright holder is reinstated permanently 0388 if the copyright holder notifies you of the violation by some reasonable means, 0389 this is the first time you have received notice of violation of this License 0390 (for any work) from that copyright holder, and you cure the violation prior 0391 to 30 days after your receipt of the notice. 0392 0393 Termination of your rights under this section does not terminate the licenses 0394 of parties who have received copies or rights from you under this License. 0395 If your rights have been terminated and not permanently reinstated, you do 0396 not qualify to receive new licenses for the same material under section 10. 0397 0398 9. Acceptance Not Required for Having Copies. 0399 0400 You are not required to accept this License in order to receive or run a copy 0401 of the Program. Ancillary propagation of a covered work occurring solely as 0402 a consequence of using peer-to-peer transmission to receive a copy likewise 0403 does not require acceptance. However, nothing other than this License grants 0404 you permission to propagate or modify any covered work. These actions infringe 0405 copyright if you do not accept this License. Therefore, by modifying or propagating 0406 a covered work, you indicate your acceptance of this License to do so. 0407 0408 10. Automatic Licensing of Downstream Recipients. 0409 0410 Each time you convey a covered work, the recipient automatically receives 0411 a license from the original licensors, to run, modify and propagate that work, 0412 subject to this License. You are not responsible for enforcing compliance 0413 by third parties with this License. 0414 0415 An "entity transaction" is a transaction transferring control of an organization, 0416 or substantially all assets of one, or subdividing an organization, or merging 0417 organizations. If propagation of a covered work results from an entity transaction, 0418 each party to that transaction who receives a copy of the work also receives 0419 whatever licenses to the work the party's predecessor in interest had or could 0420 give under the previous paragraph, plus a right to possession of the Corresponding 0421 Source of the work from the predecessor in interest, if the predecessor has 0422 it or can get it with reasonable efforts. 0423 0424 You may not impose any further restrictions on the exercise of the rights 0425 granted or affirmed under this License. For example, you may not impose a 0426 license fee, royalty, or other charge for exercise of rights granted under 0427 this License, and you may not initiate litigation (including a cross-claim 0428 or counterclaim in a lawsuit) alleging that any patent claim is infringed 0429 by making, using, selling, offering for sale, or importing the Program or 0430 any portion of it. 0431 0432 11. Patents. 0433 0434 A "contributor" is a copyright holder who authorizes use under this License 0435 of the Program or a work on which the Program is based. The work thus licensed 0436 is called the contributor's "contributor version". 0437 0438 A contributor's "essential patent claims" are all patent claims owned or controlled 0439 by the contributor, whether already acquired or hereafter acquired, that would 0440 be infringed by some manner, permitted by this License, of making, using, 0441 or selling its contributor version, but do not include claims that would be 0442 infringed only as a consequence of further modification of the contributor 0443 version. For purposes of this definition, "control" includes the right to 0444 grant patent sublicenses in a manner consistent with the requirements of this 0445 License. 0446 0447 Each contributor grants you a non-exclusive, worldwide, royalty-free patent 0448 license under the contributor's essential patent claims, to make, use, sell, 0449 offer for sale, import and otherwise run, modify and propagate the contents 0450 of its contributor version. 0451 0452 In the following three paragraphs, a "patent license" is any express agreement 0453 or commitment, however denominated, not to enforce a patent (such as an express 0454 permission to practice a patent or covenant not to sue for patent infringement). 0455 To "grant" such a patent license to a party means to make such an agreement 0456 or commitment not to enforce a patent against the party. 0457 0458 If you convey a covered work, knowingly relying on a patent license, and the 0459 Corresponding Source of the work is not available for anyone to copy, free 0460 of charge and under the terms of this License, through a publicly available 0461 network server or other readily accessible means, then you must either (1) 0462 cause the Corresponding Source to be so available, or (2) arrange to deprive 0463 yourself of the benefit of the patent license for this particular work, or 0464 (3) arrange, in a manner consistent with the requirements of this License, 0465 to extend the patent license to downstream recipients. "Knowingly relying" 0466 means you have actual knowledge that, but for the patent license, your conveying 0467 the covered work in a country, or your recipient's use of the covered work 0468 in a country, would infringe one or more identifiable patents in that country 0469 that you have reason to believe are valid. 0470 0471 If, pursuant to or in connection with a single transaction or arrangement, 0472 you convey, or propagate by procuring conveyance of, a covered work, and grant 0473 a patent license to some of the parties receiving the covered work authorizing 0474 them to use, propagate, modify or convey a specific copy of the covered work, 0475 then the patent license you grant is automatically extended to all recipients 0476 of the covered work and works based on it. 0477 0478 A patent license is "discriminatory" if it does not include within the scope 0479 of its coverage, prohibits the exercise of, or is conditioned on the non-exercise 0480 of one or more of the rights that are specifically granted under this License. 0481 You may not convey a covered work if you are a party to an arrangement with 0482 a third party that is in the business of distributing software, under which 0483 you make payment to the third party based on the extent of your activity of 0484 conveying the work, and under which the third party grants, to any of the 0485 parties who would receive the covered work from you, a discriminatory patent 0486 license (a) in connection with copies of the covered work conveyed by you 0487 (or copies made from those copies), or (b) primarily for and in connection 0488 with specific products or compilations that contain the covered work, unless 0489 you entered into that arrangement, or that patent license was granted, prior 0490 to 28 March 2007. 0491 0492 Nothing in this License shall be construed as excluding or limiting any implied 0493 license or other defenses to infringement that may otherwise be available 0494 to you under applicable patent law. 0495 0496 12. No Surrender of Others' Freedom. 0497 0498 If conditions are imposed on you (whether by court order, agreement or otherwise) 0499 that contradict the conditions of this License, they do not excuse you from 0500 the conditions of this License. If you cannot convey a covered work so as 0501 to satisfy simultaneously your obligations under this License and any other 0502 pertinent obligations, then as a consequence you may not convey it at all. 0503 For example, if you agree to terms that obligate you to collect a royalty 0504 for further conveying from those to whom you convey the Program, the only 0505 way you could satisfy both those terms and this License would be to refrain 0506 entirely from conveying the Program. 0507 0508 13. Use with the GNU Affero General Public License. 0509 0510 Notwithstanding any other provision of this License, you have permission to 0511 link or combine any covered work with a work licensed under version 3 of the 0512 GNU Affero General Public License into a single combined work, and to convey 0513 the resulting work. The terms of this License will continue to apply to the 0514 part which is the covered work, but the special requirements of the GNU Affero 0515 General Public License, section 13, concerning interaction through a network 0516 will apply to the combination as such. 0517 0518 14. Revised Versions of this License. 0519 0520 The Free Software Foundation may publish revised and/or new versions of the 0521 GNU General Public License from time to time. Such new versions will be similar 0522 in spirit to the present version, but may differ in detail to address new 0523 problems or concerns. 0524 0525 Each version is given a distinguishing version number. If the Program specifies 0526 that a certain numbered version of the GNU General Public License "or any 0527 later version" applies to it, you have the option of following the terms and 0528 conditions either of that numbered version or of any later version published 0529 by the Free Software Foundation. If the Program does not specify a version 0530 number of the GNU General Public License, you may choose any version ever 0531 published by the Free Software Foundation. 0532 0533 If the Program specifies that a proxy can decide which future versions of 0534 the GNU General Public License can be used, that proxy's public statement 0535 of acceptance of a version permanently authorizes you to choose that version 0536 for the Program. 0537 0538 Later license versions may give you additional or different permissions. However, 0539 no additional obligations are imposed on any author or copyright holder as 0540 a result of your choosing to follow a later version. 0541 0542 15. Disclaimer of Warranty. 0543 0544 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE 0545 LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR 0546 OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER 0547 EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 0548 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 0549 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM 0550 PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR 0551 CORRECTION. 0552 0553 16. Limitation of Liability. 0554 0555 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL 0556 ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM 0557 AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, 0558 INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO 0559 USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED 0560 INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE 0561 PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER 0562 PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 0563 0564 17. Interpretation of Sections 15 and 16. 0565 0566 If the disclaimer of warranty and limitation of liability provided above cannot 0567 be given local legal effect according to their terms, reviewing courts shall 0568 apply local law that most closely approximates an absolute waiver of all civil 0569 liability in connection with the Program, unless a warranty or assumption 0570 of liability accompanies a copy of the Program in return for a fee. END OF 0571 TERMS AND CONDITIONS 0572 0573 How to Apply These Terms to Your New Programs 0574 0575 If you develop a new program, and you want it to be of the greatest possible 0576 use to the public, the best way to achieve this is to make it free software 0577 which everyone can redistribute and change under these terms. 0578 0579 To do so, attach the following notices to the program. It is safest to attach 0580 them to the start of each source file to most effectively state the exclusion 0581 of warranty; and each file should have at least the "copyright" line and a 0582 pointer to where the full notice is found. 0583 0584 <one line to give the program's name and a brief idea of what it does.> 0585 0586 Copyright (C) <year> <name of author> 0587 0588 This program is free software: you can redistribute it and/or modify it under 0589 the terms of the GNU General Public License as published by the Free Software 0590 Foundation, either version 3 of the License, or (at your option) any later 0591 version. 0592 0593 This program is distributed in the hope that it will be useful, but WITHOUT 0594 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 0595 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. 0596 0597 You should have received a copy of the GNU General Public License along with 0598 this program. If not, see <https://www.gnu.org/licenses/>. 0599 0600 Also add information on how to contact you by electronic and paper mail. 0601 0602 If the program does terminal interaction, make it output a short notice like 0603 this when it starts in an interactive mode: 0604 0605 <program> Copyright (C) <year> <name of author> 0606 0607 This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 0608 0609 This is free software, and you are welcome to redistribute it under certain 0610 conditions; type `show c' for details. 0611 0612 The hypothetical commands `show w' and `show c' should show the appropriate 0613 parts of the General Public License. Of course, your program's commands might 0614 be different; for a GUI interface, you would use an "about box". 0615 0616 You should also get your employer (if you work as a programmer) or school, 0617 if any, to sign a "copyright disclaimer" for the program, if necessary. For 0618 more information on this, and how to apply and follow the GNU GPL, see <https://www.gnu.org/licenses/>. 0619 0620 The GNU General Public License does not permit incorporating your program 0621 into proprietary programs. If your program is a subroutine library, you may 0622 consider it more useful to permit linking proprietary applications with the 0623 library. If this is what you want to do, use the GNU Lesser General Public 0624 License instead of this License. But first, please read <https://www.gnu.org/ 0625 licenses /why-not-lgpl.html>.