1<appendix xmlns="http://docbook.org/ns/docbook" version="5.0" 2 xml:id="appendix.gpl-3.0"><info><title> 3 <acronym>GNU</acronym> General Public License version 3 4 </title></info> 5 <?dbhtml filename="appendix_gpl.html"?> 6 7 <para> 8 Version 3, 29 June 2007 9 </para> 10 <para> 11 Copyright © 2007 Free Software Foundation, Inc. 12 <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://www.fsf.org">https://www.fsf.org</link> 13 </para> 14 <para> 15 Everyone is permitted to copy and distribute verbatim copies of this license 16 document, but changing it is not allowed. 17 </para> 18 <bridgehead xml:id="gpl-3-preamble" renderas="sect1"> 19 Preamble 20 </bridgehead> 21 <para> 22 The <acronym>GNU</acronym> General Public License is a free, copyleft 23 license for software and other kinds of works. 24 </para> 25 <para> 26 The licenses for most software and other practical works are designed to 27 take away your freedom to share and change the works. By contrast, the 28 <acronym>GNU</acronym> General Public License is intended to guarantee your 29 freedom to share and change all versions of a program—to make sure it 30 remains free software for all its users. We, the Free Software Foundation, 31 use the <acronym>GNU</acronym> General Public License for most of our 32 software; it applies also to any other work released this way by its 33 authors. You can apply it to your programs, too. 34 </para> 35 <para> 36 When we speak of free software, we are referring to freedom, not price. Our 37 General Public Licenses are designed to make sure that you have the freedom 38 to distribute copies of free software (and charge for them if you wish), 39 that you receive source code or can get it if you want it, that you can 40 change the software or use pieces of it in new free programs, and that you 41 know you can do these things. 42 </para> 43 <para> 44 To protect your rights, we need to prevent others from denying you these 45 rights or asking you to surrender the rights. Therefore, you have certain 46 responsibilities if you distribute copies of the software, or if you modify 47 it: responsibilities to respect the freedom of others. 48 </para> 49 <para> 50 For example, if you distribute copies of such a program, whether gratis or 51 for a fee, you must pass on to the recipients the same freedoms that you 52 received. You must make sure that they, too, receive or can get the source 53 code. 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For both users’ and authors’ sake, the 65 <acronym>GPL</acronym> requires that modified versions be marked as changed, 66 so that their problems will not be attributed erroneously to authors of 67 previous versions. 68 </para> 69 <para> 70 Some devices are designed to deny users access to install or run modified 71 versions of the software inside them, although the manufacturer can do so. 72 This is fundamentally incompatible with the aim of protecting users’ 73 freedom to change the software. The systematic pattern of such abuse occurs 74 in the area of products for individuals to use, which is precisely where it 75 is most unacceptable. Therefore, we have designed this version of the 76 <acronym>GPL</acronym> to prohibit the practice for those products. If such 77 problems arise substantially in other domains, we stand ready to extend this 78 provision to those domains in future versions of the <acronym>GPL</acronym>, 79 as needed to protect the freedom of users. 80 </para> 81 <para> 82 Finally, every program is threatened constantly by software patents. States 83 should not allow patents to restrict development and use of software on 84 general-purpose computers, but in those that do, we wish to avoid the 85 special danger that patents applied to a free program could make it 86 effectively proprietary. To prevent this, the <acronym>GPL</acronym> 87 assures that patents cannot be used to render the program non-free. 88 </para> 89 <para> 90 The precise terms and conditions for copying, distribution and modification 91 follow. 92 </para> 93 <bridgehead> 94 TERMS AND CONDITIONS 95 </bridgehead> 96 <bridgehead xml:id="gpl-3-definitions" renderas="sect1"> 97 0. Definitions. 98 </bridgehead> 99 <para> 100 “This License” refers to version 3 of the <acronym>GNU</acronym> 101 General Public License. 102 </para> 103 <para> 104 “Copyright” also means copyright-like laws that apply to other 105 kinds of works, such as semiconductor masks. 106 </para> 107 <para> 108 “The Program” refers to any copyrightable work licensed under 109 this License. Each licensee is addressed as “you”. 110 “Licensees” and “recipients” may be individuals or 111 organizations. 112 </para> 113 <para> 114 To “modify” a work means to copy from or adapt all or part of 115 the work in a fashion requiring copyright permission, other than the making 116 of an exact copy. 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Mere interaction with a user 135 through a computer network, with no transfer of a copy, is not conveying. 136 </para> 137 <para> 138 An interactive user interface displays “Appropriate Legal 139 Notices” to the extent that it includes a convenient and prominently 140 visible feature that (1) displays an appropriate copyright notice, and (2) 141 tells the user that there is no warranty for the work (except to the extent 142 that warranties are provided), that licensees may convey the work under this 143 License, and how to view a copy of this License. If the interface presents 144 a list of user commands or options, such as a menu, a prominent item in the 145 list meets this criterion. 146 </para> 147 <bridgehead xml:id="SourceCode" renderas="sect1"> 148 1. Source Code. 149 </bridgehead> 150 <para> 151 The “source code” for a work means the preferred form of the 152 work for making modifications to it. “Object code” means any 153 non-source form of a work. 154 </para> 155 <para> 156 A “Standard Interface” means an interface that either is an 157 official standard defined by a recognized standards body, or, in the case of 158 interfaces specified for a particular programming language, one that is 159 widely used among developers working in that language. 160 </para> 161 <para> 162 The “System Libraries” of an executable work include anything, 163 other than the work as a whole, that (a) is included in the normal form of 164 packaging a Major Component, but which is not part of that Major Component, 165 and (b) serves only to enable use of the work with that Major Component, or 166 to implement a Standard Interface for which an implementation is available 167 to the public in source code form. 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Basic Permissions. 196 </bridgehead> 197 <para> 198 All rights granted under this License are granted for the term of copyright 199 on the Program, and are irrevocable provided the stated conditions are met. 200 This License explicitly affirms your unlimited permission to run the 201 unmodified Program. The output from running a covered work is covered by 202 this License only if the output, given its content, constitutes a covered 203 work. This License acknowledges your rights of fair use or other 204 equivalent, as provided by copyright law. 205 </para> 206 <para> 207 You may make, run and propagate covered works that you do not convey, 208 without conditions so long as your license otherwise remains in force. You 209 may convey covered works to others for the sole purpose of having them make 210 modifications exclusively for you, or provide you with facilities for 211 running those works, provided that you comply with the terms of this License 212 in conveying all material for which you do not control copyright. Those 213 thus making or running the covered works for you must do so exclusively on 214 your behalf, under your direction and control, on terms that prohibit them 215 from making any copies of your copyrighted material outside their 216 relationship with you. 217 </para> 218 <para> 219 Conveying under any other circumstances is permitted solely under the 220 conditions stated below. Sublicensing is not allowed; section 10 makes it 221 unnecessary. 222 </para> 223 <bridgehead xml:id="Protecting" renderas="sect1"> 224 3. 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Conveying Verbatim Copies. 243 </bridgehead> 244 <para> 245 You may convey verbatim copies of the Program’s source code as you 246 receive it, in any medium, provided that you conspicuously and appropriately 247 publish on each copy an appropriate copyright notice; keep intact all 248 notices stating that this License and any non-permissive terms added in 249 accord with section 7 apply to the code; keep intact all notices of the 250 absence of any warranty; and give all recipients a copy of this License 251 along with the Program. 252 </para> 253 <para> 254 You may charge any price or no price for each copy that you convey, and you 255 may offer support or warranty protection for a fee. 256 </para> 257 <bridgehead xml:id="ConveyingModified" renderas="sect1"> 258 5. Conveying Modified Source Versions. 259 </bridgehead> 260 <para> 261 You may convey a work based on the Program, or the modifications to produce 262 it from the Program, in the form of source code under the terms of section 263 4, provided that you also meet all of these conditions: 264 </para> 265 <orderedlist numeration="loweralpha" inheritnum="ignore" continuation="restarts"> 266 <listitem> 267 <para> 268 The work must carry prominent notices stating that you modified it, and 269 giving a relevant date. 270 </para> 271 </listitem> 272 <listitem> 273 <para> 274 The work must carry prominent notices stating that it is released under 275 this License and any conditions added under section 7. This requirement 276 modifies the requirement in section 4 to “keep intact all 277 notices”. 278 </para> 279 </listitem> 280 <listitem> 281 <para> 282 You must license the entire work, as a whole, under this License to 283 anyone who comes into possession of a copy. This License will therefore 284 apply, along with any applicable section 7 additional terms, to the 285 whole of the work, and all its parts, regardless of how they are 286 packaged. 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Inclusion of a covered work in an aggregate does not cause 308 this License to apply to the other parts of the aggregate. 309 </para> 310 <bridgehead xml:id="ConveyingNonSource" renderas="sect1"> 311 6. Conveying Non-Source Forms. 312 </bridgehead> 313 <para> 314 You may convey a covered work in object code form under the terms of 315 sections 4 and 5, provided that you also convey the machine-readable 316 Corresponding Source under the terms of this License, in one of these ways: 317 </para> 318 <orderedlist numeration="loweralpha" inheritnum="ignore" continuation="restarts"> 319 <listitem> 320 <para> 321 Convey the object code in, or embodied in, a physical product (including 322 a physical distribution medium), accompanied by the Corresponding Source 323 fixed on a durable physical medium customarily used for software 324 interchange. 325 </para> 326 </listitem> 327 <listitem> 328 <para> 329 Convey the object code in, or embodied in, a physical product (including 330 a physical distribution medium), accompanied by a written offer, valid 331 for at least three years and valid for as long as you offer spare parts 332 or customer support for that product model, to give anyone who possesses 333 the object code either (1) a copy of the Corresponding Source for all 334 the software in the product that is covered by this License, on a 335 durable physical medium customarily used for software interchange, for a 336 price no more than your reasonable cost of physically performing this 337 conveying of source, or (2) access to copy the Corresponding Source from 338 a network server at no charge. 339 </para> 340 </listitem> 341 <listitem> 342 <para> 343 Convey individual copies of the object code with a copy of the written 344 offer to provide the Corresponding Source. This alternative is allowed 345 only occasionally and noncommercially, and only if you received the 346 object code with such an offer, in accord with subsection 6b. 347 </para> 348 </listitem> 349 <listitem> 350 <para> 351 Convey the object code by offering access from a designated place 352 (gratis or for a charge), and offer equivalent access to the 353 Corresponding Source in the same way through the same place at no 354 further charge. You need not require recipients to copy the 355 Corresponding Source along with the object code. If the place to copy 356 the object code is a network server, the Corresponding Source may be on 357 a different server (operated by you or a third party) that supports 358 equivalent copying facilities, provided you maintain clear directions 359 next to the object code saying where to find the Corresponding Source. 360 Regardless of what server hosts the Corresponding Source, you remain 361 obligated to ensure that it is available for as long as needed to 362 satisfy these requirements. 363 </para> 364 </listitem> 365 <listitem> 366 <para> 367 Convey the object code using peer-to-peer transmission, provided you 368 inform other peers where the object code and Corresponding Source of the 369 work are being offered to the general public at no charge under 370 subsection 6d. 371 </para> 372 </listitem> 373 </orderedlist> 374 <para> 375 A separable portion of the object code, whose source code is excluded from 376 the Corresponding Source as a System Library, need not be included in 377 conveying the object code work. 378 </para> 379 <para> 380 A “User Product” is either (1) a “consumer product”, 381 which means any tangible personal property which is normally used for 382 personal, family, or household purposes, or (2) anything designed or sold 383 for incorporation into a dwelling. In determining whether a product is a 384 consumer product, doubtful cases shall be resolved in favor of coverage. 385 For a particular product received by a particular user, “normally 386 used” refers to a typical or common use of that class of product, 387 regardless of the status of the particular user or of the way in which the 388 particular user actually uses, or expects or is expected to use, the 389 product. A product is a consumer product regardless of whether the product 390 has substantial commercial, industrial or non-consumer uses, unless such 391 uses represent the only significant mode of use of the product. 392 </para> 393 <para> 394 “Installation Information” for a User Product means any methods, 395 procedures, authorization keys, or other information required to install and 396 execute modified versions of a covered work in that User Product from a 397 modified version of its Corresponding Source. The information must suffice 398 to ensure that the continued functioning of the modified object code is in 399 no case prevented or interfered with solely because modification has been 400 made. 401 </para> 402 <para> 403 If you convey an object code work under this section in, or with, or 404 specifically for use in, a User Product, and the conveying occurs as part of 405 a transaction in which the right of possession and use of the User Product 406 is transferred to the recipient in perpetuity or for a fixed term 407 (regardless of how the transaction is characterized), the Corresponding 408 Source conveyed under this section must be accompanied by the Installation 409 Information. But this requirement does not apply if neither you nor any 410 third party retains the ability to install modified object code on the User 411 Product (for example, the work has been installed in 412 <acronym>ROM</acronym>). 413 </para> 414 <para> 415 The requirement to provide Installation Information does not include a 416 requirement to continue to provide support service, warranty, or updates for 417 a work that has been modified or installed by the recipient, or for the User 418 Product in which it has been modified or installed. Access to a network may 419 be denied when the modification itself materially and adversely affects the 420 operation of the network or violates the rules and protocols for 421 communication across the network. 422 </para> 423 <para> 424 Corresponding Source conveyed, and Installation Information provided, in 425 accord with this section must be in a format that is publicly documented 426 (and with an implementation available to the public in source code form), 427 and must require no special password or key for unpacking, reading or 428 copying. 429 </para> 430 <bridgehead xml:id="AdditionalTerms" renderas="sect1"> 431 7. Additional Terms. 432 </bridgehead> 433 <para> 434 “Additional permissions” are terms that supplement the terms of 435 this License by making exceptions from one or more of its conditions. 436 Additional permissions that are applicable to the entire Program shall be 437 treated as though they were included in this License, to the extent that 438 they are valid under applicable law. If additional permissions apply only 439 to part of the Program, that part may be used separately under those 440 permissions, but the entire Program remains governed by this License 441 without regard to the additional permissions. 442 </para> 443 <para> 444 When you convey a copy of a covered work, you may at your option remove any 445 additional permissions from that copy, or from any part of it. (Additional 446 permissions may be written to require their own removal in certain cases 447 when you modify the work.) You may place additional permissions on 448 material, added by you to a covered work, for which you have or can give 449 appropriate copyright permission. 450 </para> 451 <para> 452 Notwithstanding any other provision of this License, for material you add 453 to a covered work, you may (if authorized by the copyright holders of that 454 material) supplement the terms of this License with terms: 455 </para> 456 <orderedlist numeration="loweralpha" inheritnum="ignore" continuation="restarts"> 457 <listitem> 458 <para> 459 Disclaiming warranty or limiting liability differently from the terms 460 of sections 15 and 16 of this License; or 461 </para> 462 </listitem> 463 <listitem> 464 <para> 465 Requiring preservation of specified reasonable legal notices or author 466 attributions in that material or in the Appropriate Legal Notices 467 displayed by works containing it; or 468 </para> 469 </listitem> 470 <listitem> 471 <para> 472 Prohibiting misrepresentation of the origin of that material, or 473 requiring that modified versions of such material be marked in 474 reasonable ways as different from the original version; or 475 </para> 476 </listitem> 477 <listitem> 478 <para> 479 Limiting the use for publicity purposes of names of licensors or 480 authors of the material; or 481 </para> 482 </listitem> 483 <listitem> 484 <para> 485 Declining to grant rights under trademark law for use of some trade 486 names, trademarks, or service marks; or 487 </para> 488 </listitem> 489 <listitem> 490 <para> 491 Requiring indemnification of licensors and authors of that material by 492 anyone who conveys the material (or modified versions of it) with 493 contractual assumptions of liability to the recipient, for any 494 liability that these contractual assumptions directly impose on those 495 licensors and authors. 496 </para> 497 </listitem> 498 </orderedlist> 499 <para> 500 All other non-permissive additional terms are considered “further 501 restrictions” within the meaning of section 10. If the Program as 502 you received it, or any part of it, contains a notice stating that it is 503 governed by this License along with a term that is a further restriction, 504 you may remove that term. If a license document contains a further 505 restriction but permits relicensing or conveying under this License, you 506 may add to a covered work material governed by the terms of that license 507 document, provided that the further restriction does not survive such 508 relicensing or conveying. 509 </para> 510 <para> 511 If you add terms to a covered work in accord with this section, you must 512 place, in the relevant source files, a statement of the additional terms 513 that apply to those files, or a notice indicating where to find the 514 applicable terms. 515 </para> 516 <para> 517 Additional terms, permissive or non-permissive, may be stated in the form 518 of a separately written license, or stated as exceptions; the above 519 requirements apply either way. 520 </para> 521 <bridgehead xml:id="gpl-3-termination" renderas="sect1"> 522 8. Termination. 523 </bridgehead> 524 <para> 525 You may not propagate or modify a covered work except as expressly provided 526 under this License. Any attempt otherwise to propagate or modify it is 527 void, and will automatically terminate your rights under this License 528 (including any patent licenses granted under the third paragraph of section 529 11). 530 </para> 531 <para> 532 However, if you cease all violation of this License, then your license from 533 a particular copyright holder is reinstated (a) provisionally, unless and 534 until the copyright holder explicitly and finally terminates your license, 535 and (b) permanently, if the copyright holder fails to notify you of the 536 violation by some reasonable means prior to 60 days after the cessation. 537 </para> 538 <para> 539 Moreover, your license from a particular copyright holder is reinstated 540 permanently if the copyright holder notifies you of the violation by some 541 reasonable means, this is the first time you have received notice of 542 violation of this License (for any work) from that copyright holder, and 543 you cure the violation prior to 30 days after your receipt of the notice. 544 </para> 545 <para> 546 Termination of your rights under this section does not terminate the 547 licenses of parties who have received copies or rights from you under this 548 License. If your rights have been terminated and not permanently 549 reinstated, you do not qualify to receive new licenses for the same 550 material under section 10. 551 </para> 552 <bridgehead xml:id="AcceptanceNotRequired" renderas="sect1"> 553 9. Acceptance Not Required for Having Copies. 554 </bridgehead> 555 <para> 556 You are not required to accept this License in order to receive or run a 557 copy of the Program. Ancillary propagation of a covered work occurring 558 solely as a consequence of using peer-to-peer transmission to receive a 559 copy likewise does not require acceptance. However, nothing other than 560 this License grants you permission to propagate or modify any covered work. 561 These actions infringe copyright if you do not accept this License. 562 Therefore, by modifying or propagating a covered work, you indicate your 563 acceptance of this License to do so. 564 </para> 565 <bridgehead xml:id="AutomaticDownstream" renderas="sect1"> 566 10. Automatic Licensing of Downstream Recipients. 567 </bridgehead> 568 <para> 569 Each time you convey a covered work, the recipient automatically receives a 570 license from the original licensors, to run, modify and propagate that 571 work, subject to this License. You are not responsible for enforcing 572 compliance by third parties with this License. 573 </para> 574 <para> 575 An “entity transaction” is a transaction transferring control 576 of an organization, or substantially all assets of one, or subdividing an 577 organization, or merging organizations. If propagation of a covered work 578 results from an entity transaction, each party to that transaction who 579 receives a copy of the work also receives whatever licenses to the work the 580 party’s predecessor in interest had or could give under the previous 581 paragraph, plus a right to possession of the Corresponding Source of the 582 work from the predecessor in interest, if the predecessor has it or can get 583 it with reasonable efforts. 584 </para> 585 <para> 586 You may not impose any further restrictions on the exercise of the rights 587 granted or affirmed under this License. For example, you may not impose a 588 license fee, royalty, or other charge for exercise of rights granted under 589 this License, and you may not initiate litigation (including a cross-claim 590 or counterclaim in a lawsuit) alleging that any patent claim is infringed 591 by making, using, selling, offering for sale, or importing the Program or 592 any portion of it. 593 </para> 594 <bridgehead xml:id="Patents" renderas="sect1"> 595 11. Patents. 596 </bridgehead> 597 <para> 598 A “contributor” is a copyright holder who authorizes use under 599 this License of the Program or a work on which the Program is based. The 600 work thus licensed is called the contributor’s “contributor 601 version”. 602 </para> 603 <para> 604 A contributor’s “essential patent claims” are all patent 605 claims owned or controlled by the contributor, whether already acquired or 606 hereafter acquired, that would be infringed by some manner, permitted by 607 this License, of making, using, or selling its contributor version, but do 608 not include claims that would be infringed only as a consequence of further 609 modification of the contributor version. For purposes of this definition, 610 “control” includes the right to grant patent sublicenses in a 611 manner consistent with the requirements of this License. 612 </para> 613 <para> 614 Each contributor grants you a non-exclusive, worldwide, royalty-free patent 615 license under the contributor’s essential patent claims, to make, use, 616 sell, offer for sale, import and otherwise run, modify and propagate the 617 contents of its contributor version. 618 </para> 619 <para> 620 In the following three paragraphs, a “patent license” is any 621 express agreement or commitment, however denominated, not to enforce a 622 patent (such as an express permission to practice a patent or covenant not 623 to sue for patent infringement). To “grant” such a patent 624 license to a party means to make such an agreement or commitment not to 625 enforce a patent against the party. 626 </para> 627 <para> 628 If you convey a covered work, knowingly relying on a patent license, and the 629 Corresponding Source of the work is not available for anyone to copy, free 630 of charge and under the terms of this License, through a publicly available 631 network server or other readily accessible means, then you must either (1) 632 cause the Corresponding Source to be so available, or (2) arrange to deprive 633 yourself of the benefit of the patent license for this particular work, or 634 (3) arrange, in a manner consistent with the requirements of this License, 635 to extend the patent license to downstream recipients. “Knowingly 636 relying” means you have actual knowledge that, but for the patent 637 license, your conveying the covered work in a country, or your 638 recipient’s use of the covered work in a country, would infringe one 639 or more identifiable patents in that country that you have reason to believe 640 are valid. 641 </para> 642 <para> 643 If, pursuant to or in connection with a single transaction or arrangement, 644 you convey, or propagate by procuring conveyance of, a covered work, and 645 grant a patent license to some of the parties receiving the covered work 646 authorizing them to use, propagate, modify or convey a specific copy of the 647 covered work, then the patent license you grant is automatically extended to 648 all recipients of the covered work and works based on it. 649 </para> 650 <para> 651 A patent license is “discriminatory” if it does not include 652 within the scope of its coverage, prohibits the exercise of, or is 653 conditioned on the non-exercise of one or more of the rights that are 654 specifically granted under this License. You may not convey a covered work 655 if you are a party to an arrangement with a third party that is in the 656 business of distributing software, under which you make payment to the third 657 party based on the extent of your activity of conveying the work, and under 658 which the third party grants, to any of the parties who would receive the 659 covered work from you, a discriminatory patent license (a) in connection 660 with copies of the covered work conveyed by you (or copies made from those 661 copies), or (b) primarily for and in connection with specific products or 662 compilations that contain the covered work, unless you entered into that 663 arrangement, or that patent license was granted, prior to 28 March 2007. 664 </para> 665 <para> 666 Nothing in this License shall be construed as excluding or limiting any 667 implied license or other defenses to infringement that may otherwise be 668 available to you under applicable patent law. 669 </para> 670 <bridgehead xml:id="NoSurrender" renderas="sect1"> 671 12. No Surrender of Others’ Freedom. 672 </bridgehead> 673 <para> 674 If conditions are imposed on you (whether by court order, agreement or 675 otherwise) that contradict the conditions of this License, they do not 676 excuse you from the conditions of this License. If you cannot convey a 677 covered work so as to satisfy simultaneously your obligations under this 678 License and any other pertinent obligations, then as a consequence you may 679 not convey it at all. For example, if you agree to terms that obligate you 680 to collect a royalty for further conveying from those to whom you convey the 681 Program, the only way you could satisfy both those terms and this License 682 would be to refrain entirely from conveying the Program. 683 </para> 684 <bridgehead xml:id="UsedWithAGPL" renderas="sect1"> 685 13. Use with the <acronym>GNU</acronym> Affero General Public License. 686 </bridgehead> 687 <para> 688 Notwithstanding any other provision of this License, you have permission to 689 link or combine any covered work with a work licensed under version 3 of the 690 <acronym>GNU</acronym> Affero General Public License into a single combined 691 work, and to convey the resulting work. The terms of this License will 692 continue to apply to the part which is the covered work, but the special 693 requirements of the <acronym>GNU</acronym> Affero General Public License, 694 section 13, concerning interaction through a network will apply to the 695 combination as such. 696 </para> 697 <bridgehead xml:id="RevisedVersions" renderas="sect1"> 698 14. Revised Versions of this License. 699 </bridgehead> 700 <para> 701 The Free Software Foundation may publish revised and/or new versions of the 702 <acronym>GNU</acronym> General Public License from time to time. Such new 703 versions will be similar in spirit to the present version, but may differ in 704 detail to address new problems or concerns. 705 </para> 706 <para> 707 Each version is given a distinguishing version number. If the Program 708 specifies that a certain numbered version of the <acronym>GNU</acronym> 709 General Public License “or any later version” applies to it, you 710 have the option of following the terms and conditions either of that 711 numbered version or of any later version published by the Free Software 712 Foundation. If the Program does not specify a version number of the 713 <acronym>GNU</acronym> General Public License, you may choose any version 714 ever published by the Free Software Foundation. 715 </para> 716 <para> 717 If the Program specifies that a proxy can decide which future versions of 718 the <acronym>GNU</acronym> General Public License can be used, that 719 proxy’s public statement of acceptance of a version permanently 720 authorizes you to choose that version for the Program. 721 </para> 722 <para> 723 Later license versions may give you additional or different permissions. 724 However, no additional obligations are imposed on any author or copyright 725 holder as a result of your choosing to follow a later version. 726 </para> 727 <bridgehead xml:id="WarrantyDisclaimer" renderas="sect1"> 728 15. Disclaimer of Warranty. 729 </bridgehead> 730 <para> 731 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE 732 LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR 733 OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF 734 ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE 735 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 736 THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH 737 YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL 738 NECESSARY SERVICING, REPAIR OR CORRECTION. 739 </para> 740 <bridgehead xml:id="LiabilityLimitation" renderas="sect1"> 741 16. Limitation of Liability. 742 </bridgehead> 743 <para> 744 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL 745 ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE 746 PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 747 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE 748 OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA 749 OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 750 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 751 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 752 SUCH DAMAGES. 753 </para> 754 <bridgehead xml:id="InterpretationSecs1516" renderas="sect1"> 755 17. Interpretation of Sections 15 and 16. 756 </bridgehead> 757 <para> 758 If the disclaimer of warranty and limitation of liability provided above 759 cannot be given local legal effect according to their terms, reviewing 760 courts shall apply local law that most closely approximates an absolute 761 waiver of all civil liability in connection with the Program, unless a 762 warranty or assumption of liability accompanies a copy of the Program in 763 return for a fee. 764 </para> 765 <bridgehead> 766 END OF TERMS AND CONDITIONS 767 </bridgehead> 768 <bridgehead xml:id="HowToApply" renderas="sect1"> 769 How to Apply These Terms to Your New Programs 770 </bridgehead> 771 <para> 772 If you develop a new program, and you want it to be of the greatest possible 773 use to the public, the best way to achieve this is to make it free software 774 which everyone can redistribute and change under these terms. 775 </para> 776 <para> 777 To do so, attach the following notices to the program. It is safest to 778 attach them to the start of each source file to most effectively state the 779 exclusion of warranty; and each file should have at least the 780 “copyright” line and a pointer to where the full notice is 781 found. 782 </para> 783 <screen> 784<replaceable>one line to give the program’s name and a brief idea of what it does.</replaceable> 785Copyright (C) <replaceable>year</replaceable> <replaceable>name of author</replaceable> 786 787This program is free software: you can redistribute it and/or modify 788it under the terms of the <acronym>GNU</acronym> General Public License as published by 789the Free Software Foundation, either version 3 of the License, or 790(at your option) any later version. 791 792This program is distributed in the hope that it will be useful, 793but WITHOUT ANY WARRANTY; without even the implied warranty of 794MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 795<acronym>GNU</acronym> General Public License for more details. 796 797You should have received a copy of the <acronym>GNU</acronym> General Public License 798along with this program. If not, see <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</link>. 799 </screen> 800 <para> 801 Also add information on how to contact you by electronic and paper mail. 802 </para> 803 <para> 804 If the program does terminal interaction, make it output a short notice like 805 this when it starts in an interactive mode: 806 </para> 807 <screen> 808<replaceable>program</replaceable> Copyright (C) <replaceable>year</replaceable> <replaceable>name of author</replaceable> 809This program comes with ABSOLUTELY NO WARRANTY; for details type ‘<literal>show w</literal>’. 810This is free software, and you are welcome to redistribute it 811under certain conditions; type ‘<literal>show c</literal>’ for details. 812 </screen> 813 <para> 814 The hypothetical commands ‘<literal>show w</literal>’ and 815 ‘<literal>show c</literal>’ should show the appropriate parts of 816 the General Public License. Of course, your program’s commands might be 817 different; for a GUI interface, you would use an “about box”. 818 </para> 819 <para> 820 You should also get your employer (if you work as a programmer) or school, 821 if any, to sign a “copyright disclaimer” for the program, if 822 necessary. For more information on this, and how to apply and follow the 823 <acronym>GNU</acronym> <acronym>GPL</acronym>, see 824 <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</link>. 825 </para> 826 <para> 827 The <acronym>GNU</acronym> General Public License does not permit 828 incorporating your program into proprietary programs. If your program is a 829 subroutine library, you may consider it more useful to permit linking 830 proprietary applications with the library. If this is what you want to do, 831 use the <acronym>GNU</acronym> Lesser General Public License instead of this 832 License. But first, please read <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://www.gnu.org/licenses/why-not-lgpl.html">https://www.gnu.org/licenses/why-not-lgpl.html</link>. 833 </para> 834</appendix> 835