AcornElectron

Annotated docs/gpl-3.0.txt

70:9bd1e34cd442
2016-04-11 Paul Boddie Fixed grooves in each piece that accommodate parts of the other piece, also improving the way the floor is defined with wider cartridges. Introduced extent variables and made the separation of cartridges configurable.
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                    GNU GENERAL PUBLIC LICENSE
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                       Version 3, 29 June 2007
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 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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 Everyone is permitted to copy and distribute verbatim copies
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 of this license document, but changing it is not allowed.
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                            Preamble
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  The GNU General Public License is a free, copyleft license for
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the GNU General Public License is intended to guarantee your freedom to
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share and change all versions of a program--to make sure it remains free
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software for all its users.  We, the Free Software Foundation, use the
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GNU General Public License for most of our software; it applies also to
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any other work released this way by its authors.  You can apply it to
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paul@22 429
  Termination of your rights under this section does not terminate the
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licenses of parties who have received copies or rights from you under
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this License.  If your rights have been terminated and not permanently
paul@22 432
reinstated, you do not qualify to receive new licenses for the same
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material under section 10.
paul@22 434
paul@22 435
  9. Acceptance Not Required for Having Copies.
paul@22 436
paul@22 437
  You are not required to accept this License in order to receive or
paul@22 438
run a copy of the Program.  Ancillary propagation of a covered work
paul@22 439
occurring solely as a consequence of using peer-to-peer transmission
paul@22 440
to receive a copy likewise does not require acceptance.  However,
paul@22 441
nothing other than this License grants you permission to propagate or
paul@22 442
modify any covered work.  These actions infringe copyright if you do
paul@22 443
not accept this License.  Therefore, by modifying or propagating a
paul@22 444
covered work, you indicate your acceptance of this License to do so.
paul@22 445
paul@22 446
  10. Automatic Licensing of Downstream Recipients.
paul@22 447
paul@22 448
  Each time you convey a covered work, the recipient automatically
paul@22 449
receives a license from the original licensors, to run, modify and
paul@22 450
propagate that work, subject to this License.  You are not responsible
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for enforcing compliance by third parties with this License.
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paul@22 453
  An "entity transaction" is a transaction transferring control of an
paul@22 454
organization, or substantially all assets of one, or subdividing an
paul@22 455
organization, or merging organizations.  If propagation of a covered
paul@22 456
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paul@22 457
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licenses to the work the party's predecessor in interest had or could
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give under the previous paragraph, plus a right to possession of the
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Corresponding Source of the work from the predecessor in interest, if
paul@22 461
the predecessor has it or can get it with reasonable efforts.
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paul@22 463
  You may not impose any further restrictions on the exercise of the
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rights granted or affirmed under this License.  For example, you may
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not impose a license fee, royalty, or other charge for exercise of
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rights granted under this License, and you may not initiate litigation
paul@22 467
(including a cross-claim or counterclaim in a lawsuit) alleging that
paul@22 468
any patent claim is infringed by making, using, selling, offering for
paul@22 469
sale, or importing the Program or any portion of it.
paul@22 470
paul@22 471
  11. Patents.
paul@22 472
paul@22 473
  A "contributor" is a copyright holder who authorizes use under this
paul@22 474
License of the Program or a work on which the Program is based.  The
paul@22 475
work thus licensed is called the contributor's "contributor version".
paul@22 476
paul@22 477
  A contributor's "essential patent claims" are all patent claims
paul@22 478
owned or controlled by the contributor, whether already acquired or
paul@22 479
hereafter acquired, that would be infringed by some manner, permitted
paul@22 480
by this License, of making, using, or selling its contributor version,
paul@22 481
but do not include claims that would be infringed only as a
paul@22 482
consequence of further modification of the contributor version.  For
paul@22 483
purposes of this definition, "control" includes the right to grant
paul@22 484
patent sublicenses in a manner consistent with the requirements of
paul@22 485
this License.
paul@22 486
paul@22 487
  Each contributor grants you a non-exclusive, worldwide, royalty-free
paul@22 488
patent license under the contributor's essential patent claims, to
paul@22 489
make, use, sell, offer for sale, import and otherwise run, modify and
paul@22 490
propagate the contents of its contributor version.
paul@22 491
paul@22 492
  In the following three paragraphs, a "patent license" is any express
paul@22 493
agreement or commitment, however denominated, not to enforce a patent
paul@22 494
(such as an express permission to practice a patent or covenant not to
paul@22 495
sue for patent infringement).  To "grant" such a patent license to a
paul@22 496
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paul@22 497
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paul@22 498
paul@22 499
  If you convey a covered work, knowingly relying on a patent license,
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and the Corresponding Source of the work is not available for anyone
paul@22 501
to copy, free of charge and under the terms of this License, through a
paul@22 502
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paul@22 503
then you must either (1) cause the Corresponding Source to be so
paul@22 504
available, or (2) arrange to deprive yourself of the benefit of the
paul@22 505
patent license for this particular work, or (3) arrange, in a manner
paul@22 506
consistent with the requirements of this License, to extend the patent
paul@22 507
license to downstream recipients.  "Knowingly relying" means you have
paul@22 508
actual knowledge that, but for the patent license, your conveying the
paul@22 509
covered work in a country, or your recipient's use of the covered work
paul@22 510
in a country, would infringe one or more identifiable patents in that
paul@22 511
country that you have reason to believe are valid.
paul@22 512
paul@22 513
  If, pursuant to or in connection with a single transaction or
paul@22 514
arrangement, you convey, or propagate by procuring conveyance of, a
paul@22 515
covered work, and grant a patent license to some of the parties
paul@22 516
receiving the covered work authorizing them to use, propagate, modify
paul@22 517
or convey a specific copy of the covered work, then the patent license
paul@22 518
you grant is automatically extended to all recipients of the covered
paul@22 519
work and works based on it.
paul@22 520
paul@22 521
  A patent license is "discriminatory" if it does not include within
paul@22 522
the scope of its coverage, prohibits the exercise of, or is
paul@22 523
conditioned on the non-exercise of one or more of the rights that are
paul@22 524
specifically granted under this License.  You may not convey a covered
paul@22 525
work if you are a party to an arrangement with a third party that is
paul@22 526
in the business of distributing software, under which you make payment
paul@22 527
to the third party based on the extent of your activity of conveying
paul@22 528
the work, and under which the third party grants, to any of the
paul@22 529
parties who would receive the covered work from you, a discriminatory
paul@22 530
patent license (a) in connection with copies of the covered work
paul@22 531
conveyed by you (or copies made from those copies), or (b) primarily
paul@22 532
for and in connection with specific products or compilations that
paul@22 533
contain the covered work, unless you entered into that arrangement,
paul@22 534
or that patent license was granted, prior to 28 March 2007.
paul@22 535
paul@22 536
  Nothing in this License shall be construed as excluding or limiting
paul@22 537
any implied license or other defenses to infringement that may
paul@22 538
otherwise be available to you under applicable patent law.
paul@22 539
paul@22 540
  12. No Surrender of Others' Freedom.
paul@22 541
paul@22 542
  If conditions are imposed on you (whether by court order, agreement or
paul@22 543
otherwise) that contradict the conditions of this License, they do not
paul@22 544
excuse you from the conditions of this License.  If you cannot convey a
paul@22 545
covered work so as to satisfy simultaneously your obligations under this
paul@22 546
License and any other pertinent obligations, then as a consequence you may
paul@22 547
not convey it at all.  For example, if you agree to terms that obligate you
paul@22 548
to collect a royalty for further conveying from those to whom you convey
paul@22 549
the Program, the only way you could satisfy both those terms and this
paul@22 550
License would be to refrain entirely from conveying the Program.
paul@22 551
paul@22 552
  13. Use with the GNU Affero General Public License.
paul@22 553
paul@22 554
  Notwithstanding any other provision of this License, you have
paul@22 555
permission to link or combine any covered work with a work licensed
paul@22 556
under version 3 of the GNU Affero General Public License into a single
paul@22 557
combined work, and to convey the resulting work.  The terms of this
paul@22 558
License will continue to apply to the part which is the covered work,
paul@22 559
but the special requirements of the GNU Affero General Public License,
paul@22 560
section 13, concerning interaction through a network will apply to the
paul@22 561
combination as such.
paul@22 562
paul@22 563
  14. Revised Versions of this License.
paul@22 564
paul@22 565
  The Free Software Foundation may publish revised and/or new versions of
paul@22 566
the GNU General Public License from time to time.  Such new versions will
paul@22 567
be similar in spirit to the present version, but may differ in detail to
paul@22 568
address new problems or concerns.
paul@22 569
paul@22 570
  Each version is given a distinguishing version number.  If the
paul@22 571
Program specifies that a certain numbered version of the GNU General
paul@22 572
Public License "or any later version" applies to it, you have the
paul@22 573
option of following the terms and conditions either of that numbered
paul@22 574
version or of any later version published by the Free Software
paul@22 575
Foundation.  If the Program does not specify a version number of the
paul@22 576
GNU General Public License, you may choose any version ever published
paul@22 577
by the Free Software Foundation.
paul@22 578
paul@22 579
  If the Program specifies that a proxy can decide which future
paul@22 580
versions of the GNU General Public License can be used, that proxy's
paul@22 581
public statement of acceptance of a version permanently authorizes you
paul@22 582
to choose that version for the Program.
paul@22 583
paul@22 584
  Later license versions may give you additional or different
paul@22 585
permissions.  However, no additional obligations are imposed on any
paul@22 586
author or copyright holder as a result of your choosing to follow a
paul@22 587
later version.
paul@22 588
paul@22 589
  15. Disclaimer of Warranty.
paul@22 590
paul@22 591
  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
paul@22 592
APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
paul@22 593
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
paul@22 594
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
paul@22 595
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
paul@22 596
PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
paul@22 597
IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
paul@22 598
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
paul@22 599
paul@22 600
  16. Limitation of Liability.
paul@22 601
paul@22 602
  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
paul@22 603
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
paul@22 604
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
paul@22 605
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
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USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
paul@22 607
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
paul@22 608
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
paul@22 609
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
paul@22 610
SUCH DAMAGES.
paul@22 611
paul@22 612
  17. Interpretation of Sections 15 and 16.
paul@22 613
paul@22 614
  If the disclaimer of warranty and limitation of liability provided
paul@22 615
above cannot be given local legal effect according to their terms,
paul@22 616
reviewing courts shall apply local law that most closely approximates
paul@22 617
an absolute waiver of all civil liability in connection with the
paul@22 618
Program, unless a warranty or assumption of liability accompanies a
paul@22 619
copy of the Program in return for a fee.
paul@22 620
paul@22 621
                     END OF TERMS AND CONDITIONS
paul@22 622
paul@22 623
            How to Apply These Terms to Your New Programs
paul@22 624
paul@22 625
  If you develop a new program, and you want it to be of the greatest
paul@22 626
possible use to the public, the best way to achieve this is to make it
paul@22 627
free software which everyone can redistribute and change under these terms.
paul@22 628
paul@22 629
  To do so, attach the following notices to the program.  It is safest
paul@22 630
to attach them to the start of each source file to most effectively
paul@22 631
state the exclusion of warranty; and each file should have at least
paul@22 632
the "copyright" line and a pointer to where the full notice is found.
paul@22 633
paul@22 634
    <one line to give the program's name and a brief idea of what it does.>
paul@22 635
    Copyright (C) <year>  <name of author>
paul@22 636
paul@22 637
    This program is free software: you can redistribute it and/or modify
paul@22 638
    it under the terms of the GNU General Public License as published by
paul@22 639
    the Free Software Foundation, either version 3 of the License, or
paul@22 640
    (at your option) any later version.
paul@22 641
paul@22 642
    This program is distributed in the hope that it will be useful,
paul@22 643
    but WITHOUT ANY WARRANTY; without even the implied warranty of
paul@22 644
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
paul@22 645
    GNU General Public License for more details.
paul@22 646
paul@22 647
    You should have received a copy of the GNU General Public License
paul@22 648
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
paul@22 649
paul@22 650
Also add information on how to contact you by electronic and paper mail.
paul@22 651
paul@22 652
  If the program does terminal interaction, make it output a short
paul@22 653
notice like this when it starts in an interactive mode:
paul@22 654
paul@22 655
    <program>  Copyright (C) <year>  <name of author>
paul@22 656
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
paul@22 657
    This is free software, and you are welcome to redistribute it
paul@22 658
    under certain conditions; type `show c' for details.
paul@22 659
paul@22 660
The hypothetical commands `show w' and `show c' should show the appropriate
paul@22 661
parts of the General Public License.  Of course, your program's commands
paul@22 662
might be different; for a GUI interface, you would use an "about box".
paul@22 663
paul@22 664
  You should also get your employer (if you work as a programmer) or school,
paul@22 665
if any, to sign a "copyright disclaimer" for the program, if necessary.
paul@22 666
For more information on this, and how to apply and follow the GNU GPL, see
paul@22 667
<http://www.gnu.org/licenses/>.
paul@22 668
paul@22 669
  The GNU General Public License does not permit incorporating your program
paul@22 670
into proprietary programs.  If your program is a subroutine library, you
paul@22 671
may consider it more useful to permit linking proprietary applications with
paul@22 672
the library.  If this is what you want to do, use the GNU Lesser General
paul@22 673
Public License instead of this License.  But first, please read
paul@22 674
<http://www.gnu.org/philosophy/why-not-lgpl.html>.