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1 GNU GENERAL PUBLIC LICENSE 2 Version 3, 29 June 2007 3 4 Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/> 5 Everyone is permitted to copy and distribute verbatim copies 6 of this license document, but changing it is not allowed. 7 8 Preamble 9 10 The GNU General Public License is a free, copyleft license for 11 software and other kinds of works. 12 13 The licenses for most software and other practical works are designed 14 to take away your freedom to share and change the works. By contrast, 15 the GNU General Public License is intended to guarantee your freedom to 16 share and change all versions of a program--to make sure it remains free 17 software for all its users. We, the Free Software Foundation, use the 18 GNU General Public License for most of our software; it applies also to 19 any other work released this way by its authors. You can apply it to 20 your programs, too. 21 22 When we speak of free software, we are referring to freedom, not 23 price. 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Patents. 472 473 A "contributor" is a copyright holder who authorizes use under this 474 License of the Program or a work on which the Program is based. The 475 work thus licensed is called the contributor's "contributor version". 476 477 A contributor's "essential patent claims" are all patent claims 478 owned or controlled by the contributor, whether already acquired or 479 hereafter acquired, that would be infringed by some manner, permitted 480 by this License, of making, using, or selling its contributor version, 481 but do not include claims that would be infringed only as a 482 consequence of further modification of the contributor version. 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You may not convey a covered 525 work if you are a party to an arrangement with a third party that is 526 in the business of distributing software, under which you make payment 527 to the third party based on the extent of your activity of conveying 528 the work, and under which the third party grants, to any of the 529 parties who would receive the covered work from you, a discriminatory 530 patent license (a) in connection with copies of the covered work 531 conveyed by you (or copies made from those copies), or (b) primarily 532 for and in connection with specific products or compilations that 533 contain the covered work, unless you entered into that arrangement, 534 or that patent license was granted, prior to 28 March 2007. 535 536 Nothing in this License shall be construed as excluding or limiting 537 any implied license or other defenses to infringement that may 538 otherwise be available to you under applicable patent law. 539 540 12. No Surrender of Others' Freedom. 541 542 If conditions are imposed on you (whether by court order, agreement or 543 otherwise) that contradict the conditions of this License, they do not 544 excuse you from the conditions of this License. If you cannot convey a 545 covered work so as to satisfy simultaneously your obligations under this 546 License and any other pertinent obligations, then as a consequence you may 547 not convey it at all. For example, if you agree to terms that obligate you 548 to collect a royalty for further conveying from those to whom you convey 549 the Program, the only way you could satisfy both those terms and this 550 License would be to refrain entirely from conveying the Program. 551 552 13. Use with the GNU Affero General Public License. 553 554 Notwithstanding any other provision of this License, you have 555 permission to link or combine any covered work with a work licensed 556 under version 3 of the GNU Affero General Public License into a single 557 combined work, and to convey the resulting work. The terms of this 558 License will continue to apply to the part which is the covered work, 559 but the special requirements of the GNU Affero General Public License, 560 section 13, concerning interaction through a network will apply to the 561 combination as such. 562 563 14. Revised Versions of this License. 564 565 The Free Software Foundation may publish revised and/or new versions of 566 the GNU General Public License from time to time. Such new versions will 567 be similar in spirit to the present version, but may differ in detail to 568 address new problems or concerns. 569 570 Each version is given a distinguishing version number. If the 571 Program specifies that a certain numbered version of the GNU General 572 Public License "or any later version" applies to it, you have the 573 option of following the terms and conditions either of that numbered 574 version or of any later version published by the Free Software 575 Foundation. If the Program does not specify a version number of the 576 GNU General Public License, you may choose any version ever published 577 by the Free Software Foundation. 578 579 If the Program specifies that a proxy can decide which future 580 versions of the GNU General Public License can be used, that proxy's 581 public statement of acceptance of a version permanently authorizes you 582 to choose that version for the Program. 583 584 Later license versions may give you additional or different 585 permissions. However, no additional obligations are imposed on any 586 author or copyright holder as a result of your choosing to follow a 587 later version. 588 589 15. Disclaimer of Warranty. 590 591 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 600 16. Limitation of Liability. 601 602 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 SUCH DAMAGES. 611 612 17. Interpretation of Sections 15 and 16. 613 614 If the disclaimer of warranty and limitation of liability provided 615 above cannot be given local legal effect according to their terms, 616 reviewing courts shall apply local law that most closely approximates 617 an absolute waiver of all civil liability in connection with the 618 Program, unless a warranty or assumption of liability accompanies a 619 copy of the Program in return for a fee. 620 621 END OF TERMS AND CONDITIONS 622 623 How to Apply These Terms to Your New Programs 624 625 If you develop a new program, and you want it to be of the greatest 626 possible use to the public, the best way to achieve this is to make it 627 free software which everyone can redistribute and change under these terms. 628 629 To do so, attach the following notices to the program. It is safest 630 to attach them to the start of each source file to most effectively 631 state the exclusion of warranty; and each file should have at least 632 the "copyright" line and a pointer to where the full notice is found. 633 634 <one line to give the program's name and a brief idea of what it does.> 635 Copyright (C) <year> <name of author> 636 637 This program is free software: you can redistribute it and/or modify 638 it under the terms of the GNU General Public License as published by 639 the Free Software Foundation, either version 3 of the License, or 640 (at your option) any later version. 641 642 This program is distributed in the hope that it will be useful, 643 but WITHOUT ANY WARRANTY; without even the implied warranty of 644 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 GNU General Public License for more details. 646 647 You should have received a copy of the GNU General Public License 648 along with this program. If not, see <https://www.gnu.org/licenses/>. 649 650 Also add information on how to contact you by electronic and paper mail. 651 652 If the program does terminal interaction, make it output a short 653 notice like this when it starts in an interactive mode: 654 655 <program> Copyright (C) <year> <name of author> 656 This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 This is free software, and you are welcome to redistribute it 658 under certain conditions; type `show c' for details. 659 660 The hypothetical commands `show w' and `show c' should show the appropriate 661 parts of the General Public License. Of course, your program's commands 662 might be different; for a GUI interface, you would use an "about box". 663 664 You should also get your employer (if you work as a programmer) or school, 665 if any, to sign a "copyright disclaimer" for the program, if necessary. 666 For more information on this, and how to apply and follow the GNU GPL, see 667 <https://www.gnu.org/licenses/>. 668 669 The GNU General Public License does not permit incorporating your program 670 into proprietary programs. If your program is a subroutine library, you 671 may consider it more useful to permit linking proprietary applications with 672 the library. If this is what you want to do, use the GNU Lesser General 673 Public License instead of this License. But first, please read 674 <https://www.gnu.org/licenses/why-not-lgpl.html>.