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