1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<!-- Copyright (C) 1988-2021 Free Software Foundation, Inc. 4 5Permission is granted to copy, distribute and/or modify this document 6under the terms of the GNU Free Documentation License, Version 1.3 or 7any later version published by the Free Software Foundation; with the 8Invariant Sections being "Free Software" and "Free Software Needs 9Free Documentation", with the Front-Cover Texts being "A GNU Manual," 10and with the Back-Cover Texts as in (a) below. 11 12(a) The FSF's Back-Cover Text is: "You are free to copy and modify 13this GNU Manual. 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By contrast, 90the GNU General Public License is intended to guarantee your freedom 91to share and change all versions of a program—to make sure it remains 92free software for all its users. We, the Free Software Foundation, 93use the GNU General Public License for most of our software; it 94applies also to any other work released this way by its authors. You 95can apply it to your programs, too. 96</p> 97<p>When we speak of free software, we are referring to freedom, not 98price. Our General Public Licenses are designed to make sure that you 99have the freedom to distribute copies of free software (and charge for 100them if you wish), that you receive source code or can get it if you 101want it, that you can change the software or use pieces of it in new 102free programs, and that you know you can do these things. 103</p> 104<p>To protect your rights, we need to prevent others from denying you 105these rights or asking you to surrender the rights. Therefore, you 106have certain responsibilities if you distribute copies of the 107software, or if you modify it: responsibilities to respect the freedom 108of others. 109</p> 110<p>For example, if you distribute copies of such a program, whether 111gratis or for a fee, you must pass on to the recipients the same 112freedoms that you received. You must make sure that they, too, 113receive or can get the source code. And you must show them these 114terms so they know their rights. 115</p> 116<p>Developers that use the GNU GPL protect your rights with two steps: 117(1) assert copyright on the software, and (2) offer you this License 118giving you legal permission to copy, distribute and/or modify it. 119</p> 120<p>For the developers’ and authors’ protection, the GPL clearly explains 121that there is no warranty for this free software. For both users’ and 122authors’ sake, the GPL requires that modified versions be marked as 123changed, so that their problems will not be attributed erroneously to 124authors of previous versions. 125</p> 126<p>Some devices are designed to deny users access to install or run 127modified versions of the software inside them, although the 128manufacturer can do so. This is fundamentally incompatible with the 129aim of protecting users’ freedom to change the software. The 130systematic pattern of such abuse occurs in the area of products for 131individuals to use, which is precisely where it is most unacceptable. 132Therefore, we have designed this version of the GPL to prohibit the 133practice for those products. If such problems arise substantially in 134other domains, we stand ready to extend this provision to those 135domains in future versions of the GPL, as needed to protect the 136freedom of users. 137</p> 138<p>Finally, every program is threatened constantly by software patents. 139States should not allow patents to restrict development and use of 140software on general-purpose computers, but in those that do, we wish 141to avoid the special danger that patents applied to a free program 142could make it effectively proprietary. To prevent this, the GPL 143assures that patents cannot be used to render the program non-free. 144</p> 145<p>The precise terms and conditions for copying, distribution and 146modification follow. 147</p> 148<a name="TERMS-AND-CONDITIONS"></a> 149<h3 class="heading">TERMS AND CONDITIONS</h3> 150 151<ol> 152<li> Definitions. 153 154<p>“This License” refers to version 3 of the GNU General Public License. 155</p> 156<p>“Copyright” also means copyright-like laws that apply to other kinds 157of works, such as semiconductor masks. 158</p> 159<p>“The Program” refers to any copyrightable work licensed under this 160License. Each licensee is addressed as “you”. “Licensees” and 161“recipients” may be individuals or organizations. 162</p> 163<p>To “modify” a work means to copy from or adapt all or part of the work 164in a fashion requiring copyright permission, other than the making of 165an exact copy. The resulting work is called a “modified version” of 166the earlier work or a work “based on” the earlier work. 167</p> 168<p>A “covered work” means either the unmodified Program or a work based 169on the Program. 170</p> 171<p>To “propagate” a work means to do anything with it that, without 172permission, would make you directly or secondarily liable for 173infringement under applicable copyright law, except executing it on a 174computer or modifying a private copy. Propagation includes copying, 175distribution (with or without modification), making available to the 176public, and in some countries other activities as well. 177</p> 178<p>To “convey” a work means any kind of propagation that enables other 179parties to make or receive copies. Mere interaction with a user 180through a computer network, with no transfer of a copy, is not 181conveying. 182</p> 183<p>An interactive user interface displays “Appropriate Legal Notices” to 184the extent that it includes a convenient and prominently visible 185feature that (1) displays an appropriate copyright notice, and (2) 186tells the user that there is no warranty for the work (except to the 187extent that warranties are provided), that licensees may convey the 188work under this License, and how to view a copy of this License. If 189the interface presents a list of user commands or options, such as a 190menu, a prominent item in the list meets this criterion. 191</p> 192</li><li> Source Code. 193 194<p>The “source code” for a work means the preferred form of the work for 195making modifications to it. “Object code” means any non-source form 196of a work. 197</p> 198<p>A “Standard Interface” means an interface that either is an official 199standard defined by a recognized standards body, or, in the case of 200interfaces specified for a particular programming language, one that 201is widely used among developers working in that language. 202</p> 203<p>The “System Libraries” of an executable work include anything, other 204than the work as a whole, that (a) is included in the normal form of 205packaging a Major Component, but which is not part of that Major 206Component, and (b) serves only to enable use of the work with that 207Major Component, or to implement a Standard Interface for which an 208implementation is available to the public in source code form. A 209“Major Component”, in this context, means a major essential component 210(kernel, window system, and so on) of the specific operating system 211(if any) on which the executable work runs, or a compiler used to 212produce the work, or an object code interpreter used to run it. 213</p> 214<p>The “Corresponding Source” for a work in object code form means all 215the source code needed to generate, install, and (for an executable 216work) run the object code and to modify the work, including scripts to 217control those activities. However, it does not include the work’s 218System Libraries, or general-purpose tools or generally available free 219programs which are used unmodified in performing those activities but 220which are not part of the work. For example, Corresponding Source 221includes interface definition files associated with source files for 222the work, and the source code for shared libraries and dynamically 223linked subprograms that the work is specifically designed to require, 224such as by intimate data communication or control flow between those 225subprograms and other parts of the work. 226</p> 227<p>The Corresponding Source need not include anything that users can 228regenerate automatically from other parts of the Corresponding Source. 229</p> 230<p>The Corresponding Source for a work in source code form is that same 231work. 232</p> 233</li><li> Basic Permissions. 234 235<p>All rights granted under this License are granted for the term of 236copyright on the Program, and are irrevocable provided the stated 237conditions are met. This License explicitly affirms your unlimited 238permission to run the unmodified Program. The output from running a 239covered work is covered by this License only if the output, given its 240content, constitutes a covered work. This License acknowledges your 241rights of fair use or other equivalent, as provided by copyright law. 242</p> 243<p>You may make, run and propagate covered works that you do not convey, 244without conditions so long as your license otherwise remains in force. 245You may convey covered works to others for the sole purpose of having 246them make modifications exclusively for you, or provide you with 247facilities for running those works, provided that you comply with the 248terms of this License in conveying all material for which you do not 249control copyright. Those thus making or running the covered works for 250you must do so exclusively on your behalf, under your direction and 251control, on terms that prohibit them from making any copies of your 252copyrighted material outside their relationship with you. 253</p> 254<p>Conveying under any other circumstances is permitted solely under the 255conditions stated below. Sublicensing is not allowed; section 10 256makes it unnecessary. 257</p> 258</li><li> Protecting Users’ Legal Rights From Anti-Circumvention Law. 259 260<p>No covered work shall be deemed part of an effective technological 261measure under any applicable law fulfilling obligations under article 26211 of the WIPO copyright treaty adopted on 20 December 1996, or 263similar laws prohibiting or restricting circumvention of such 264measures. 265</p> 266<p>When you convey a covered work, you waive any legal power to forbid 267circumvention of technological measures to the extent such 268circumvention is effected by exercising rights under this License with 269respect to the covered work, and you disclaim any intention to limit 270operation or modification of the work as a means of enforcing, against 271the work’s users, your or third parties’ legal rights to forbid 272circumvention of technological measures. 273</p> 274</li><li> Conveying Verbatim Copies. 275 276<p>You may convey verbatim copies of the Program’s source code as you 277receive it, in any medium, provided that you conspicuously and 278appropriately publish on each copy an appropriate copyright notice; 279keep intact all notices stating that this License and any 280non-permissive terms added in accord with section 7 apply to the code; 281keep intact all notices of the absence of any warranty; and give all 282recipients a copy of this License along with the Program. 283</p> 284<p>You may charge any price or no price for each copy that you convey, 285and you may offer support or warranty protection for a fee. 286</p> 287</li><li> Conveying Modified Source Versions. 288 289<p>You may convey a work based on the Program, or the modifications to 290produce it from the Program, in the form of source code under the 291terms of section 4, provided that you also meet all of these 292conditions: 293</p> 294<ol> 295<li> The work must carry prominent notices stating that you modified it, 296and giving a relevant date. 297 298</li><li> The work must carry prominent notices stating that it is released 299under this License and any conditions added under section 7. This 300requirement modifies the requirement in section 4 to “keep intact all 301notices”. 302 303</li><li> You must license the entire work, as a whole, under this License to 304anyone who comes into possession of a copy. This License will 305therefore apply, along with any applicable section 7 additional terms, 306to the whole of the work, and all its parts, regardless of how they 307are packaged. This License gives no permission to license the work in 308any other way, but it does not invalidate such permission if you have 309separately received it. 310 311</li><li> If the work has interactive user interfaces, each must display 312Appropriate Legal Notices; however, if the Program has interactive 313interfaces that do not display Appropriate Legal Notices, your work 314need not make them do so. 315</li></ol> 316 317<p>A compilation of a covered work with other separate and independent 318works, which are not by their nature extensions of the covered work, 319and which are not combined with it such as to form a larger program, 320in or on a volume of a storage or distribution medium, is called an 321“aggregate” if the compilation and its resulting copyright are not 322used to limit the access or legal rights of the compilation’s users 323beyond what the individual works permit. Inclusion of a covered work 324in an aggregate does not cause this License to apply to the other 325parts of the aggregate. 326</p> 327</li><li> Conveying Non-Source Forms. 328 329<p>You may convey a covered work in object code form under the terms of 330sections 4 and 5, provided that you also convey the machine-readable 331Corresponding Source under the terms of this License, in one of these 332ways: 333</p> 334<ol> 335<li> Convey the object code in, or embodied in, a physical product 336(including a physical distribution medium), accompanied by the 337Corresponding Source fixed on a durable physical medium customarily 338used for software interchange. 339 340</li><li> Convey the object code in, or embodied in, a physical product 341(including a physical distribution medium), accompanied by a written 342offer, valid for at least three years and valid for as long as you 343offer spare parts or customer support for that product model, to give 344anyone who possesses the object code either (1) a copy of the 345Corresponding Source for all the software in the product that is 346covered by this License, on a durable physical medium customarily used 347for software interchange, for a price no more than your reasonable 348cost of physically performing this conveying of source, or (2) access 349to copy the Corresponding Source from a network server at no charge. 350 351</li><li> Convey individual copies of the object code with a copy of the written 352offer to provide the Corresponding Source. This alternative is 353allowed only occasionally and noncommercially, and only if you 354received the object code with such an offer, in accord with subsection 3556b. 356 357</li><li> Convey the object code by offering access from a designated place 358(gratis or for a charge), and offer equivalent access to the 359Corresponding Source in the same way through the same place at no 360further charge. You need not require recipients to copy the 361Corresponding Source along with the object code. If the place to copy 362the object code is a network server, the Corresponding Source may be 363on a different server (operated by you or a third party) that supports 364equivalent copying facilities, provided you maintain clear directions 365next to the object code saying where to find the Corresponding Source. 366Regardless of what server hosts the Corresponding Source, you remain 367obligated to ensure that it is available for as long as needed to 368satisfy these requirements. 369 370</li><li> Convey the object code using peer-to-peer transmission, provided you 371inform other peers where the object code and Corresponding Source of 372the work are being offered to the general public at no charge under 373subsection 6d. 374 375</li></ol> 376 377<p>A separable portion of the object code, whose source code is excluded 378from the Corresponding Source as a System Library, need not be 379included in conveying the object code work. 380</p> 381<p>A “User Product” is either (1) a “consumer product”, which means any 382tangible personal property which is normally used for personal, 383family, or household purposes, or (2) anything designed or sold for 384incorporation into a dwelling. In determining whether a product is a 385consumer product, doubtful cases shall be resolved in favor of 386coverage. For a particular product received by a particular user, 387“normally used” refers to a typical or common use of that class of 388product, regardless of the status of the particular user or of the way 389in which the particular user actually uses, or expects or is expected 390to use, the product. A product is a consumer product regardless of 391whether the product has substantial commercial, industrial or 392non-consumer uses, unless such uses represent the only significant 393mode of use of the product. 394</p> 395<p>“Installation Information” for a User Product means any methods, 396procedures, authorization keys, or other information required to 397install and execute modified versions of a covered work in that User 398Product from a modified version of its Corresponding Source. The 399information must suffice to ensure that the continued functioning of 400the modified object code is in no case prevented or interfered with 401solely because modification has been made. 402</p> 403<p>If you convey an object code work under this section in, or with, or 404specifically for use in, a User Product, and the conveying occurs as 405part of a transaction in which the right of possession and use of the 406User Product is transferred to the recipient in perpetuity or for a 407fixed term (regardless of how the transaction is characterized), the 408Corresponding Source conveyed under this section must be accompanied 409by the Installation Information. But this requirement does not apply 410if neither you nor any third party retains the ability to install 411modified object code on the User Product (for example, the work has 412been installed in ROM). 413</p> 414<p>The requirement to provide Installation Information does not include a 415requirement to continue to provide support service, warranty, or 416updates for a work that has been modified or installed by the 417recipient, or for the User Product in which it has been modified or 418installed. Access to a network may be denied when the modification 419itself materially and adversely affects the operation of the network 420or violates the rules and protocols for communication across the 421network. 422</p> 423<p>Corresponding Source conveyed, and Installation Information provided, 424in accord with this section must be in a format that is publicly 425documented (and with an implementation available to the public in 426source code form), and must require no special password or key for 427unpacking, reading or copying. 428</p> 429</li><li> Additional Terms. 430 431<p>“Additional permissions” are terms that supplement the terms of this 432License by making exceptions from one or more of its conditions. 433Additional permissions that are applicable to the entire Program shall 434be treated as though they were included in this License, to the extent 435that they are valid under applicable law. If additional permissions 436apply only to part of the Program, that part may be used separately 437under those permissions, but the entire Program remains governed by 438this License without regard to the additional permissions. 439</p> 440<p>When you convey a copy of a covered work, you may at your option 441remove any additional permissions from that copy, or from any part of 442it. (Additional permissions may be written to require their own 443removal in certain cases when you modify the work.) You may place 444additional permissions on material, added by you to a covered work, 445for which you have or can give appropriate copyright permission. 446</p> 447<p>Notwithstanding any other provision of this License, for material you 448add to a covered work, you may (if authorized by the copyright holders 449of that material) supplement the terms of this License with terms: 450</p> 451<ol> 452<li> Disclaiming warranty or limiting liability differently from the terms 453of sections 15 and 16 of this License; or 454 455</li><li> Requiring preservation of specified reasonable legal notices or author 456attributions in that material or in the Appropriate Legal Notices 457displayed by works containing it; or 458 459</li><li> Prohibiting misrepresentation of the origin of that material, or 460requiring that modified versions of such material be marked in 461reasonable ways as different from the original version; or 462 463</li><li> Limiting the use for publicity purposes of names of licensors or 464authors of the material; or 465 466</li><li> Declining to grant rights under trademark law for use of some trade 467names, trademarks, or service marks; or 468 469</li><li> Requiring indemnification of licensors and authors of that material by 470anyone who conveys the material (or modified versions of it) with 471contractual assumptions of liability to the recipient, for any 472liability that these contractual assumptions directly impose on those 473licensors and authors. 474</li></ol> 475 476<p>All other non-permissive additional terms are considered “further 477restrictions” within the meaning of section 10. If the Program as you 478received it, or any part of it, contains a notice stating that it is 479governed by this License along with a term that is a further 480restriction, you may remove that term. If a license document contains 481a further restriction but permits relicensing or conveying under this 482License, you may add to a covered work material governed by the terms 483of that license document, provided that the further restriction does 484not survive such relicensing or conveying. 485</p> 486<p>If you add terms to a covered work in accord with this section, you 487must place, in the relevant source files, a statement of the 488additional terms that apply to those files, or a notice indicating 489where to find the applicable terms. 490</p> 491<p>Additional terms, permissive or non-permissive, may be stated in the 492form of a separately written license, or stated as exceptions; the 493above requirements apply either way. 494</p> 495</li><li> Termination. 496 497<p>You may not propagate or modify a covered work except as expressly 498provided under this License. Any attempt otherwise to propagate or 499modify it is void, and will automatically terminate your rights under 500this License (including any patent licenses granted under the third 501paragraph of section 11). 502</p> 503<p>However, if you cease all violation of this License, then your license 504from a particular copyright holder is reinstated (a) provisionally, 505unless and until the copyright holder explicitly and finally 506terminates your license, and (b) permanently, if the copyright holder 507fails to notify you of the violation by some reasonable means prior to 50860 days after the cessation. 509</p> 510<p>Moreover, your license from a particular copyright holder is 511reinstated permanently if the copyright holder notifies you of the 512violation by some reasonable means, this is the first time you have 513received notice of violation of this License (for any work) from that 514copyright holder, and you cure the violation prior to 30 days after 515your receipt of the notice. 516</p> 517<p>Termination of your rights under this section does not terminate the 518licenses of parties who have received copies or rights from you under 519this License. If your rights have been terminated and not permanently 520reinstated, you do not qualify to receive new licenses for the same 521material under section 10. 522</p> 523</li><li> Acceptance Not Required for Having Copies. 524 525<p>You are not required to accept this License in order to receive or run 526a copy of the Program. Ancillary propagation of a covered work 527occurring solely as a consequence of using peer-to-peer transmission 528to receive a copy likewise does not require acceptance. However, 529nothing other than this License grants you permission to propagate or 530modify any covered work. These actions infringe copyright if you do 531not accept this License. Therefore, by modifying or propagating a 532covered work, you indicate your acceptance of this License to do so. 533</p> 534</li><li> Automatic Licensing of Downstream Recipients. 535 536<p>Each time you convey a covered work, the recipient automatically 537receives a license from the original licensors, to run, modify and 538propagate that work, subject to this License. You are not responsible 539for enforcing compliance by third parties with this License. 540</p> 541<p>An “entity transaction” is a transaction transferring control of an 542organization, or substantially all assets of one, or subdividing an 543organization, or merging organizations. If propagation of a covered 544work results from an entity transaction, each party to that 545transaction who receives a copy of the work also receives whatever 546licenses to the work the party’s predecessor in interest had or could 547give under the previous paragraph, plus a right to possession of the 548Corresponding Source of the work from the predecessor in interest, if 549the predecessor has it or can get it with reasonable efforts. 550</p> 551<p>You may not impose any further restrictions on the exercise of the 552rights granted or affirmed under this License. For example, you may 553not impose a license fee, royalty, or other charge for exercise of 554rights granted under this License, and you may not initiate litigation 555(including a cross-claim or counterclaim in a lawsuit) alleging that 556any patent claim is infringed by making, using, selling, offering for 557sale, or importing the Program or any portion of it. 558</p> 559</li><li> Patents. 560 561<p>A “contributor” is a copyright holder who authorizes use under this 562License of the Program or a work on which the Program is based. The 563work thus licensed is called the contributor’s “contributor version”. 564</p> 565<p>A contributor’s “essential patent claims” are all patent claims owned 566or controlled by the contributor, whether already acquired or 567hereafter acquired, that would be infringed by some manner, permitted 568by this License, of making, using, or selling its contributor version, 569but do not include claims that would be infringed only as a 570consequence of further modification of the contributor version. For 571purposes of this definition, “control” includes the right to grant 572patent sublicenses in a manner consistent with the requirements of 573this License. 574</p> 575<p>Each contributor grants you a non-exclusive, worldwide, royalty-free 576patent license under the contributor’s essential patent claims, to 577make, use, sell, offer for sale, import and otherwise run, modify and 578propagate the contents of its contributor version. 579</p> 580<p>In the following three paragraphs, a “patent license” is any express 581agreement or commitment, however denominated, not to enforce a patent 582(such as an express permission to practice a patent or covenant not to 583sue for patent infringement). To “grant” such a patent license to a 584party means to make such an agreement or commitment not to enforce a 585patent against the party. 586</p> 587<p>If you convey a covered work, knowingly relying on a patent license, 588and the Corresponding Source of the work is not available for anyone 589to copy, free of charge and under the terms of this License, through a 590publicly available network server or other readily accessible means, 591then you must either (1) cause the Corresponding Source to be so 592available, or (2) arrange to deprive yourself of the benefit of the 593patent license for this particular work, or (3) arrange, in a manner 594consistent with the requirements of this License, to extend the patent 595license to downstream recipients. “Knowingly relying” means you have 596actual knowledge that, but for the patent license, your conveying the 597covered work in a country, or your recipient’s use of the covered work 598in a country, would infringe one or more identifiable patents in that 599country that you have reason to believe are valid. 600</p> 601<p>If, pursuant to or in connection with a single transaction or 602arrangement, you convey, or propagate by procuring conveyance of, a 603covered work, and grant a patent license to some of the parties 604receiving the covered work authorizing them to use, propagate, modify 605or convey a specific copy of the covered work, then the patent license 606you grant is automatically extended to all recipients of the covered 607work and works based on it. 608</p> 609<p>A patent license is “discriminatory” if it does not include within the 610scope of its coverage, prohibits the exercise of, or is conditioned on 611the non-exercise of one or more of the rights that are specifically 612granted under this License. You may not convey a covered work if you 613are a party to an arrangement with a third party that is in the 614business of distributing software, under which you make payment to the 615third party based on the extent of your activity of conveying the 616work, and under which the third party grants, to any of the parties 617who would receive the covered work from you, a discriminatory patent 618license (a) in connection with copies of the covered work conveyed by 619you (or copies made from those copies), or (b) primarily for and in 620connection with specific products or compilations that contain the 621covered work, unless you entered into that arrangement, or that patent 622license was granted, prior to 28 March 2007. 623</p> 624<p>Nothing in this License shall be construed as excluding or limiting 625any implied license or other defenses to infringement that may 626otherwise be available to you under applicable patent law. 627</p> 628</li><li> No Surrender of Others’ Freedom. 629 630<p>If conditions are imposed on you (whether by court order, agreement or 631otherwise) that contradict the conditions of this License, they do not 632excuse you from the conditions of this License. If you cannot convey 633a covered work so as to satisfy simultaneously your obligations under 634this License and any other pertinent obligations, then as a 635consequence you may not convey it at all. For example, if you agree 636to terms that obligate you to collect a royalty for further conveying 637from those to whom you convey the Program, the only way you could 638satisfy both those terms and this License would be to refrain entirely 639from conveying the Program. 640</p> 641</li><li> Use with the GNU Affero General Public License. 642 643<p>Notwithstanding any other provision of this License, you have 644permission to link or combine any covered work with a work licensed 645under version 3 of the GNU Affero General Public License into a single 646combined work, and to convey the resulting work. The terms of this 647License will continue to apply to the part which is the covered work, 648but the special requirements of the GNU Affero General Public License, 649section 13, concerning interaction through a network will apply to the 650combination as such. 651</p> 652</li><li> Revised Versions of this License. 653 654<p>The Free Software Foundation may publish revised and/or new versions 655of the GNU General Public License from time to time. Such new 656versions will be similar in spirit to the present version, but may 657differ in detail to address new problems or concerns. 658</p> 659<p>Each version is given a distinguishing version number. If the Program 660specifies that a certain numbered version of the GNU General Public 661License “or any later version” applies to it, you have the option of 662following the terms and conditions either of that numbered version or 663of any later version published by the Free Software Foundation. If 664the Program does not specify a version number of the GNU General 665Public License, you may choose any version ever published by the Free 666Software Foundation. 667</p> 668<p>If the Program specifies that a proxy can decide which future versions 669of the GNU General Public License can be used, that proxy’s public 670statement of acceptance of a version permanently authorizes you to 671choose that version for the Program. 672</p> 673<p>Later license versions may give you additional or different 674permissions. However, no additional obligations are imposed on any 675author or copyright holder as a result of your choosing to follow a 676later version. 677</p> 678</li><li> Disclaimer of Warranty. 679 680<p>THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 681APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 682HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT 683WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT 684LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 685A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND 686PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE 687DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR 688CORRECTION. 689</p> 690</li><li> Limitation of Liability. 691 692<p>IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 693WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR 694CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 695INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES 696ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT 697NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR 698LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM 699TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER 700PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 701</p> 702</li><li> Interpretation of Sections 15 and 16. 703 704<p>If the disclaimer of warranty and limitation of liability provided 705above cannot be given local legal effect according to their terms, 706reviewing courts shall apply local law that most closely approximates 707an absolute waiver of all civil liability in connection with the 708Program, unless a warranty or assumption of liability accompanies a 709copy of the Program in return for a fee. 710</p> 711</li></ol> 712 713<a name="END-OF-TERMS-AND-CONDITIONS"></a> 714<h3 class="heading">END OF TERMS AND CONDITIONS</h3> 715 716<a name="How-to-Apply-These-Terms-to-Your-New-Programs"></a> 717<h3 class="heading">How to Apply These Terms to Your New Programs</h3> 718 719<p>If you develop a new program, and you want it to be of the greatest 720possible use to the public, the best way to achieve this is to make it 721free software which everyone can redistribute and change under these 722terms. 723</p> 724<p>To do so, attach the following notices to the program. It is safest 725to attach them to the start of each source file to most effectively 726state the exclusion of warranty; and each file should have at least 727the “copyright” line and a pointer to where the full notice is found. 728</p> 729<div class="smallexample"> 730<pre class="smallexample"><var>one line to give the program's name and a brief idea of what it does.</var> 731Copyright (C) <var>year</var> <var>name of author</var> 732 733This program is free software: you can redistribute it and/or modify 734it under the terms of the GNU General Public License as published by 735the Free Software Foundation, either version 3 of the License, or (at 736your option) any later version. 737 738This program is distributed in the hope that it will be useful, but 739WITHOUT ANY WARRANTY; without even the implied warranty of 740MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 741General Public License for more details. 742 743You should have received a copy of the GNU General Public License 744along with this program. If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>. 745</pre></div> 746 747<p>Also add information on how to contact you by electronic and paper mail. 748</p> 749<p>If the program does terminal interaction, make it output a short 750notice like this when it starts in an interactive mode: 751</p> 752<div class="smallexample"> 753<pre class="smallexample"><var>program</var> Copyright (C) <var>year</var> <var>name of author</var> 754This program comes with ABSOLUTELY NO WARRANTY; for details type ‘<samp>show w</samp>’. 755This is free software, and you are welcome to redistribute it 756under certain conditions; type ‘<samp>show c</samp>’ for details. 757</pre></div> 758 759<p>The hypothetical commands ‘<samp>show w</samp>’ and ‘<samp>show c</samp>’ should show 760the appropriate parts of the General Public License. Of course, your 761program’s commands might be different; for a GUI interface, you would 762use an “about box”. 763</p> 764<p>You should also get your employer (if you work as a programmer) or school, 765if any, to sign a “copyright disclaimer” for the program, if necessary. 766For more information on this, and how to apply and follow the GNU GPL, see 767<a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>. 768</p> 769<p>The GNU General Public License does not permit incorporating your 770program into proprietary programs. If your program is a subroutine 771library, you may consider it more useful to permit linking proprietary 772applications with the library. If this is what you want to do, use 773the GNU Lesser General Public License instead of this License. But 774first, please read <a href="http://www.gnu.org/philosophy/why-not-lgpl.html">http://www.gnu.org/philosophy/why-not-lgpl.html</a>. 775</p> 776<hr> 777<div class="header"> 778<p> 779Next: <a href="GNU-Free-Documentation-License.html#GNU-Free-Documentation-License" accesskey="n" rel="next">GNU Free Documentation License</a>, Previous: <a href="Man-Pages.html#Man-Pages" accesskey="p" rel="previous">Man Pages</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> 780</div> 781 782 783 784</body> 785</html> 786