1 @c The GNU General Public License. 2 @center Version 3, 29 June 2007 3 4 @c This file is intended to be included within another document, 5 @c hence no sectioning command or @node. 6 7 @display 8 Copyright @copyright{} 2007 Free Software Foundation, Inc. @url{http://fsf.org/} 9 10 Everyone is permitted to copy and distribute verbatim copies of this 11 license document, but changing it is not allowed. 12 @end display 13 14 @heading Preamble 15 16 The GNU General Public License is a free, copyleft license for 17 software and other kinds of works. 18 19 The licenses for most software and other practical works are designed 20 to take away your freedom to share and change the works. By contrast, 21 the GNU General Public License is intended to guarantee your freedom 22 to share and change all versions of a program---to make sure it remains 23 free software for all its users. We, the Free Software Foundation, 24 use the GNU General Public License for most of our software; it 25 applies also to any other work released this way by its authors. You 26 can apply it to your programs, too. 27 28 When we speak of free software, we are referring to freedom, not 29 price. Our General Public Licenses are designed to make sure that you 30 have the freedom to distribute copies of free software (and charge for 31 them if you wish), that you receive source code or can get it if you 32 want it, that you can change the software or use pieces of it in new 33 free programs, and that you know you can do these things. 34 35 To protect your rights, we need to prevent others from denying you 36 these rights or asking you to surrender the rights. Therefore, you 37 have certain responsibilities if you distribute copies of the 38 software, or if you modify it: responsibilities to respect the freedom 39 of others. 40 41 For example, if you distribute copies of such a program, whether 42 gratis or for a fee, you must pass on to the recipients the same 43 freedoms that you received. You must make sure that they, too, 44 receive or can get the source code. And you must show them these 45 terms so they know their rights. 46 47 Developers that use the GNU GPL protect your rights with two steps: 48 (1) assert copyright on the software, and (2) offer you this License 49 giving you legal permission to copy, distribute and/or modify it. 50 51 For the developers' and authors' protection, the GPL clearly explains 52 that there is no warranty for this free software. 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To prevent this, the GPL 74 assures that patents cannot be used to render the program non-free. 75 76 The precise terms and conditions for copying, distribution and 77 modification follow. 78 79 @heading TERMS AND CONDITIONS 80 81 @enumerate 0 82 @item Definitions. 83 84 ``This License'' refers to version 3 of the GNU General Public License. 85 86 ``Copyright'' also means copyright-like laws that apply to other kinds 87 of works, such as semiconductor masks. 88 89 ``The Program'' refers to any copyrightable work licensed under this 90 License. Each licensee is addressed as ``you''. ``Licensees'' and 91 ``recipients'' may be individuals or organizations. 92 93 To ``modify'' a work means to copy from or adapt all or part of the work 94 in a fashion requiring copyright permission, other than the making of 95 an exact copy. 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Mere interaction with a user 110 through a computer network, with no transfer of a copy, is not 111 conveying. 112 113 An interactive user interface displays ``Appropriate Legal Notices'' to 114 the extent that it includes a convenient and prominently visible 115 feature that (1) displays an appropriate copyright notice, and (2) 116 tells the user that there is no warranty for the work (except to the 117 extent that warranties are provided), that licensees may convey the 118 work under this License, and how to view a copy of this License. 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The output from running a 169 covered work is covered by this License only if the output, given its 170 content, constitutes a covered work. This License acknowledges your 171 rights of fair use or other equivalent, as provided by copyright law. 172 173 You may make, run and propagate covered works that you do not convey, 174 without conditions so long as your license otherwise remains in force. 175 You may convey covered works to others for the sole purpose of having 176 them make modifications exclusively for you, or provide you with 177 facilities for running those works, provided that you comply with the 178 terms of this License in conveying all material for which you do not 179 control copyright. 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Sublicensing is not allowed; section 10 186 makes it unnecessary. 187 188 @item Protecting Users' Legal Rights From Anti-Circumvention Law. 189 190 No covered work shall be deemed part of an effective technological 191 measure under any applicable law fulfilling obligations under article 192 11 of the WIPO copyright treaty adopted on 20 December 1996, or 193 similar laws prohibiting or restricting circumvention of such 194 measures. 195 196 When you convey a covered work, you waive any legal power to forbid 197 circumvention of technological measures to the extent such 198 circumvention is effected by exercising rights under this License with 199 respect to the covered work, and you disclaim any intention to limit 200 operation or modification of the work as a means of enforcing, against 201 the work's users, your or third parties' legal rights to forbid 202 circumvention of technological measures. 203 204 @item Conveying Verbatim Copies. 205 206 You may convey verbatim copies of the Program's source code as you 207 receive it, in any medium, provided that you conspicuously and 208 appropriately publish on each copy an appropriate copyright notice; 209 keep intact all notices stating that this License and any 210 non-permissive terms added in accord with section 7 apply to the code; 211 keep intact all notices of the absence of any warranty; and give all 212 recipients a copy of this License along with the Program. 213 214 You may charge any price or no price for each copy that you convey, 215 and you may offer support or warranty protection for a fee. 216 217 @item Conveying Modified Source Versions. 218 219 You may convey a work based on the Program, or the modifications to 220 produce it from the Program, in the form of source code under the 221 terms of section 4, provided that you also meet all of these 222 conditions: 223 224 @enumerate a 225 @item 226 The work must carry prominent notices stating that you modified it, 227 and giving a relevant date. 228 229 @item 230 The work must carry prominent notices stating that it is released 231 under this License and any conditions added under section 7. This 232 requirement modifies the requirement in section 4 to ``keep intact all 233 notices''. 234 235 @item 236 You must license the entire work, as a whole, under this License to 237 anyone who comes into possession of a copy. This License will 238 therefore apply, along with any applicable section 7 additional terms, 239 to the whole of the work, and all its parts, regardless of how they 240 are packaged. This License gives no permission to license the work in 241 any other way, but it does not invalidate such permission if you have 242 separately received it. 243 244 @item 245 If the work has interactive user interfaces, each must display 246 Appropriate Legal Notices; however, if the Program has interactive 247 interfaces that do not display Appropriate Legal Notices, your work 248 need not make them do so. 249 @end enumerate 250 251 A compilation of a covered work with other separate and independent 252 works, which are not by their nature extensions of the covered work, 253 and which are not combined with it such as to form a larger program, 254 in or on a volume of a storage or distribution medium, is called an 255 ``aggregate'' if the compilation and its resulting copyright are not 256 used to limit the access or legal rights of the compilation's users 257 beyond what the individual works permit. Inclusion of a covered work 258 in an aggregate does not cause this License to apply to the other 259 parts of the aggregate. 260 261 @item Conveying Non-Source Forms. 262 263 You may convey a covered work in object code form under the terms of 264 sections 4 and 5, provided that you also convey the machine-readable 265 Corresponding Source under the terms of this License, in one of these 266 ways: 267 268 @enumerate a 269 @item 270 Convey the object code in, or embodied in, a physical product 271 (including a physical distribution medium), accompanied by the 272 Corresponding Source fixed on a durable physical medium customarily 273 used for software interchange. 274 275 @item 276 Convey the object code in, or embodied in, a physical product 277 (including a physical distribution medium), accompanied by a written 278 offer, valid for at least three years and valid for as long as you 279 offer spare parts or customer support for that product model, to give 280 anyone who possesses the object code either (1) a copy of the 281 Corresponding Source for all the software in the product that is 282 covered by this License, on a durable physical medium customarily used 283 for software interchange, for a price no more than your reasonable 284 cost of physically performing this conveying of source, or (2) access 285 to copy the Corresponding Source from a network server at no charge. 286 287 @item 288 Convey individual copies of the object code with a copy of the written 289 offer to provide the Corresponding Source. This alternative is 290 allowed only occasionally and noncommercially, and only if you 291 received the object code with such an offer, in accord with subsection 292 6b. 293 294 @item 295 Convey the object code by offering access from a designated place 296 (gratis or for a charge), and offer equivalent access to the 297 Corresponding Source in the same way through the same place at no 298 further charge. You need not require recipients to copy the 299 Corresponding Source along with the object code. If the place to copy 300 the object code is a network server, the Corresponding Source may be 301 on a different server (operated by you or a third party) that supports 302 equivalent copying facilities, provided you maintain clear directions 303 next to the object code saying where to find the Corresponding Source. 304 Regardless of what server hosts the Corresponding Source, you remain 305 obligated to ensure that it is available for as long as needed to 306 satisfy these requirements. 307 308 @item 309 Convey the object code using peer-to-peer transmission, provided you 310 inform other peers where the object code and Corresponding Source of 311 the work are being offered to the general public at no charge under 312 subsection 6d. 313 314 @end enumerate 315 316 A separable portion of the object code, whose source code is excluded 317 from the Corresponding Source as a System Library, need not be 318 included in conveying the object code work. 319 320 A ``User Product'' is either (1) a ``consumer product'', which means any 321 tangible personal property which is normally used for personal, 322 family, or household purposes, or (2) anything designed or sold for 323 incorporation into a dwelling. In determining whether a product is a 324 consumer product, doubtful cases shall be resolved in favor of 325 coverage. For a particular product received by a particular user, 326 ``normally used'' refers to a typical or common use of that class of 327 product, regardless of the status of the particular user or of the way 328 in which the particular user actually uses, or expects or is expected 329 to use, the product. A product is a consumer product regardless of 330 whether the product has substantial commercial, industrial or 331 non-consumer uses, unless such uses represent the only significant 332 mode of use of the product. 333 334 ``Installation Information'' for a User Product means any methods, 335 procedures, authorization keys, or other information required to 336 install and execute modified versions of a covered work in that User 337 Product from a modified version of its Corresponding Source. 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But this requirement does not apply 349 if neither you nor any third party retains the ability to install 350 modified object code on the User Product (for example, the work has 351 been installed in ROM). 352 353 The requirement to provide Installation Information does not include a 354 requirement to continue to provide support service, warranty, or 355 updates for a work that has been modified or installed by the 356 recipient, or for the User Product in which it has been modified or 357 installed. Access to a network may be denied when the modification 358 itself materially and adversely affects the operation of the network 359 or violates the rules and protocols for communication across the 360 network. 361 362 Corresponding Source conveyed, and Installation Information provided, 363 in accord with this section must be in a format that is publicly 364 documented (and with an implementation available to the public in 365 source code form), and must require no special password or key for 366 unpacking, reading or copying. 367 368 @item Additional Terms. 369 370 ``Additional permissions'' are terms that supplement the terms of this 371 License by making exceptions from one or more of its conditions. 372 Additional permissions that are applicable to the entire Program shall 373 be treated as though they were included in this License, to the extent 374 that they are valid under applicable law. If additional permissions 375 apply only to part of the Program, that part may be used separately 376 under those permissions, but the entire Program remains governed by 377 this License without regard to the additional permissions. 378 379 When you convey a copy of a covered work, you may at your option 380 remove any additional permissions from that copy, or from any part of 381 it. (Additional permissions may be written to require their own 382 removal in certain cases when you modify the work.) You may place 383 additional permissions on material, added by you to a covered work, 384 for which you have or can give appropriate copyright permission. 385 386 Notwithstanding any other provision of this License, for material you 387 add to a covered work, you may (if authorized by the copyright holders 388 of that material) supplement the terms of this License with terms: 389 390 @enumerate a 391 @item 392 Disclaiming warranty or limiting liability differently from the terms 393 of sections 15 and 16 of this License; or 394 395 @item 396 Requiring preservation of specified reasonable legal notices or author 397 attributions in that material or in the Appropriate Legal Notices 398 displayed by works containing it; or 399 400 @item 401 Prohibiting misrepresentation of the origin of that material, or 402 requiring that modified versions of such material be marked in 403 reasonable ways as different from the original version; or 404 405 @item 406 Limiting the use for publicity purposes of names of licensors or 407 authors of the material; or 408 409 @item 410 Declining to grant rights under trademark law for use of some trade 411 names, trademarks, or service marks; or 412 413 @item 414 Requiring indemnification of licensors and authors of that material by 415 anyone who conveys the material (or modified versions of it) with 416 contractual assumptions of liability to the recipient, for any 417 liability that these contractual assumptions directly impose on those 418 licensors and authors. 419 @end enumerate 420 421 All other non-permissive additional terms are considered ``further 422 restrictions'' within the meaning of section 10. If the Program as you 423 received it, or any part of it, contains a notice stating that it is 424 governed by this License along with a term that is a further 425 restriction, you may remove that term. If a license document contains 426 a further restriction but permits relicensing or conveying under this 427 License, you may add to a covered work material governed by the terms 428 of that license document, provided that the further restriction does 429 not survive such relicensing or conveying. 430 431 If you add terms to a covered work in accord with this section, you 432 must place, in the relevant source files, a statement of the 433 additional terms that apply to those files, or a notice indicating 434 where to find the applicable terms. 435 436 Additional terms, permissive or non-permissive, may be stated in the 437 form of a separately written license, or stated as exceptions; the 438 above requirements apply either way. 439 440 @item Termination. 441 442 You may not propagate or modify a covered work except as expressly 443 provided under this License. Any attempt otherwise to propagate or 444 modify it is void, and will automatically terminate your rights under 445 this License (including any patent licenses granted under the third 446 paragraph of section 11). 447 448 However, if you cease all violation of this License, then your license 449 from a particular copyright holder is reinstated (a) provisionally, 450 unless and until the copyright holder explicitly and finally 451 terminates your license, and (b) permanently, if the copyright holder 452 fails to notify you of the violation by some reasonable means prior to 453 60 days after the cessation. 454 455 Moreover, your license from a particular copyright holder is 456 reinstated permanently if the copyright holder notifies you of the 457 violation by some reasonable means, this is the first time you have 458 received notice of violation of this License (for any work) from that 459 copyright holder, and you cure the violation prior to 30 days after 460 your receipt of the notice. 461 462 Termination of your rights under this section does not terminate the 463 licenses of parties who have received copies or rights from you under 464 this License. If your rights have been terminated and not permanently 465 reinstated, you do not qualify to receive new licenses for the same 466 material under section 10. 467 468 @item Acceptance Not Required for Having Copies. 469 470 You are not required to accept this License in order to receive or run 471 a copy of the Program. Ancillary propagation of a covered work 472 occurring solely as a consequence of using peer-to-peer transmission 473 to receive a copy likewise does not require acceptance. However, 474 nothing other than this License grants you permission to propagate or 475 modify any covered work. These actions infringe copyright if you do 476 not accept this License. Therefore, by modifying or propagating a 477 covered work, you indicate your acceptance of this License to do so. 478 479 @item Automatic Licensing of Downstream Recipients. 480 481 Each time you convey a covered work, the recipient automatically 482 receives a license from the original licensors, to run, modify and 483 propagate that work, subject to this License. You are not responsible 484 for enforcing compliance by third parties with this License. 485 486 An ``entity transaction'' is a transaction transferring control of an 487 organization, or substantially all assets of one, or subdividing an 488 organization, or merging organizations. If propagation of a covered 489 work results from an entity transaction, each party to that 490 transaction who receives a copy of the work also receives whatever 491 licenses to the work the party's predecessor in interest had or could 492 give under the previous paragraph, plus a right to possession of the 493 Corresponding Source of the work from the predecessor in interest, if 494 the predecessor has it or can get it with reasonable efforts. 495 496 You may not impose any further restrictions on the exercise of the 497 rights granted or affirmed under this License. For example, you may 498 not impose a license fee, royalty, or other charge for exercise of 499 rights granted under this License, and you may not initiate litigation 500 (including a cross-claim or counterclaim in a lawsuit) alleging that 501 any patent claim is infringed by making, using, selling, offering for 502 sale, or importing the Program or any portion of it. 503 504 @item Patents. 505 506 A ``contributor'' is a copyright holder who authorizes use under this 507 License of the Program or a work on which the Program is based. The 508 work thus licensed is called the contributor's ``contributor version''. 509 510 A contributor's ``essential patent claims'' are all patent claims owned 511 or controlled by the contributor, whether already acquired or 512 hereafter acquired, that would be infringed by some manner, permitted 513 by this License, of making, using, or selling its contributor version, 514 but do not include claims that would be infringed only as a 515 consequence of further modification of the contributor version. For 516 purposes of this definition, ``control'' includes the right to grant 517 patent sublicenses in a manner consistent with the requirements of 518 this License. 519 520 Each contributor grants you a non-exclusive, worldwide, royalty-free 521 patent license under the contributor's essential patent claims, to 522 make, use, sell, offer for sale, import and otherwise run, modify and 523 propagate the contents of its contributor version. 524 525 In the following three paragraphs, a ``patent license'' is any express 526 agreement or commitment, however denominated, not to enforce a patent 527 (such as an express permission to practice a patent or covenant not to 528 sue for patent infringement). To ``grant'' such a patent license to a 529 party means to make such an agreement or commitment not to enforce a 530 patent against the party. 531 532 If you convey a covered work, knowingly relying on a patent license, 533 and the Corresponding Source of the work is not available for anyone 534 to copy, free of charge and under the terms of this License, through a 535 publicly available network server or other readily accessible means, 536 then you must either (1) cause the Corresponding Source to be so 537 available, or (2) arrange to deprive yourself of the benefit of the 538 patent license for this particular work, or (3) arrange, in a manner 539 consistent with the requirements of this License, to extend the patent 540 license to downstream recipients. ``Knowingly relying'' means you have 541 actual knowledge that, but for the patent license, your conveying the 542 covered work in a country, or your recipient's use of the covered work 543 in a country, would infringe one or more identifiable patents in that 544 country that you have reason to believe are valid. 545 546 If, pursuant to or in connection with a single transaction or 547 arrangement, you convey, or propagate by procuring conveyance of, a 548 covered work, and grant a patent license to some of the parties 549 receiving the covered work authorizing them to use, propagate, modify 550 or convey a specific copy of the covered work, then the patent license 551 you grant is automatically extended to all recipients of the covered 552 work and works based on it. 553 554 A patent license is ``discriminatory'' if it does not include within the 555 scope of its coverage, prohibits the exercise of, or is conditioned on 556 the non-exercise of one or more of the rights that are specifically 557 granted under this License. You may not convey a covered work if you 558 are a party to an arrangement with a third party that is in the 559 business of distributing software, under which you make payment to the 560 third party based on the extent of your activity of conveying the 561 work, and under which the third party grants, to any of the parties 562 who would receive the covered work from you, a discriminatory patent 563 license (a) in connection with copies of the covered work conveyed by 564 you (or copies made from those copies), or (b) primarily for and in 565 connection with specific products or compilations that contain the 566 covered work, unless you entered into that arrangement, or that patent 567 license was granted, prior to 28 March 2007. 568 569 Nothing in this License shall be construed as excluding or limiting 570 any implied license or other defenses to infringement that may 571 otherwise be available to you under applicable patent law. 572 573 @item No Surrender of Others' Freedom. 574 575 If conditions are imposed on you (whether by court order, agreement or 576 otherwise) that contradict the conditions of this License, they do not 577 excuse you from the conditions of this License. If you cannot convey 578 a covered work so as to satisfy simultaneously your obligations under 579 this License and any other pertinent obligations, then as a 580 consequence you may not convey it at all. For example, if you agree 581 to terms that obligate you to collect a royalty for further conveying 582 from those to whom you convey the Program, the only way you could 583 satisfy both those terms and this License would be to refrain entirely 584 from conveying the Program. 585 586 @item Use with the GNU Affero General Public License. 587 588 Notwithstanding any other provision of this License, you have 589 permission to link or combine any covered work with a work licensed 590 under version 3 of the GNU Affero General Public License into a single 591 combined work, and to convey the resulting work. The terms of this 592 License will continue to apply to the part which is the covered work, 593 but the special requirements of the GNU Affero General Public License, 594 section 13, concerning interaction through a network will apply to the 595 combination as such. 596 597 @item Revised Versions of this License. 598 599 The Free Software Foundation may publish revised and/or new versions 600 of the GNU General Public License from time to time. Such new 601 versions will be similar in spirit to the present version, but may 602 differ in detail to address new problems or concerns. 603 604 Each version is given a distinguishing version number. If the Program 605 specifies that a certain numbered version of the GNU General Public 606 License ``or any later version'' applies to it, you have the option of 607 following the terms and conditions either of that numbered version or 608 of any later version published by the Free Software Foundation. If 609 the Program does not specify a version number of the GNU General 610 Public License, you may choose any version ever published by the Free 611 Software Foundation. 612 613 If the Program specifies that a proxy can decide which future versions 614 of the GNU General Public License can be used, that proxy's public 615 statement of acceptance of a version permanently authorizes you to 616 choose that version for the Program. 617 618 Later license versions may give you additional or different 619 permissions. However, no additional obligations are imposed on any 620 author or copyright holder as a result of your choosing to follow a 621 later version. 622 623 @item Disclaimer of Warranty. 624 625 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 626 APPLICABLE LAW@. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 627 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM ``AS IS'' WITHOUT 628 WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT 629 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 630 A PARTICULAR PURPOSE@. THE ENTIRE RISK AS TO THE QUALITY AND 631 PERFORMANCE OF THE PROGRAM IS WITH YOU@. SHOULD THE PROGRAM PROVE 632 DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR 633 CORRECTION. 634 635 @item Limitation of Liability. 636 637 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 638 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR 639 CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 640 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES 641 ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT 642 NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR 643 LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM 644 TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER 645 PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 646 647 @item Interpretation of Sections 15 and 16. 648 649 If the disclaimer of warranty and limitation of liability provided 650 above cannot be given local legal effect according to their terms, 651 reviewing courts shall apply local law that most closely approximates 652 an absolute waiver of all civil liability in connection with the 653 Program, unless a warranty or assumption of liability accompanies a 654 copy of the Program in return for a fee. 655 656 @end enumerate 657 658 @heading END OF TERMS AND CONDITIONS 659 660 @heading How to Apply These Terms to Your New Programs 661 662 If you develop a new program, and you want it to be of the greatest 663 possible use to the public, the best way to achieve this is to make it 664 free software which everyone can redistribute and change under these 665 terms. 666 667 To do so, attach the following notices to the program. It is safest 668 to attach them to the start of each source file to most effectively 669 state the exclusion of warranty; and each file should have at least 670 the ``copyright'' line and a pointer to where the full notice is found. 671 672 @smallexample 673 @var{one line to give the program's name and a brief idea of what it does.} 674 Copyright (C) @var{year} @var{name of author} 675 676 This program is free software: you can redistribute it and/or modify 677 it under the terms of the GNU General Public License as published by 678 the Free Software Foundation, either version 3 of the License, or (at 679 your option) any later version. 680 681 This program is distributed in the hope that it will be useful, but 682 WITHOUT ANY WARRANTY; without even the implied warranty of 683 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE@. See the GNU 684 General Public License for more details. 685 686 You should have received a copy of the GNU General Public License 687 along with this program. If not, see @url{http://www.gnu.org/licenses/}. 688 @end smallexample 689 690 Also add information on how to contact you by electronic and paper mail. 691 692 If the program does terminal interaction, make it output a short 693 notice like this when it starts in an interactive mode: 694 695 @smallexample 696 @var{program} Copyright (C) @var{year} @var{name of author} 697 This program comes with ABSOLUTELY NO WARRANTY; for details type @samp{show w}. 698 This is free software, and you are welcome to redistribute it 699 under certain conditions; type @samp{show c} for details. 700 @end smallexample 701 702 The hypothetical commands @samp{show w} and @samp{show c} should show 703 the appropriate parts of the General Public License. Of course, your 704 program's commands might be different; for a GUI interface, you would 705 use an ``about box''. 706 707 You should also get your employer (if you work as a programmer) or school, 708 if any, to sign a ``copyright disclaimer'' for the program, if necessary. 709 For more information on this, and how to apply and follow the GNU GPL, see 710 @url{http://www.gnu.org/licenses/}. 711 712 The GNU General Public License does not permit incorporating your 713 program into proprietary programs. If your program is a subroutine 714 library, you may consider it more useful to permit linking proprietary 715 applications with the library. If this is what you want to do, use 716 the GNU Lesser General Public License instead of this License. But 717 first, please read @url{http://www.gnu.org/philosophy/why-not-lgpl.html}. 718
