nissy-nx

A Rubik's cube optimal solver
git clone https://git.tronto.net/nissy-nx
Download | Log | Files | Refs | README | LICENSE

LICENSE (33161B)


      1 The following license applies to every C source code and header file 
      2 distributed with this LICENSE file.
      3 
      4     Nissy - A Rubik's cube solver and FMC assistant
      5     Copyright (C) 2020-2022 Sebastiano Tronto <sebastiano@tronto.net>
      6 
      7     This program is free software: you can redistribute it and/or modify
      8     it under the terms of the GNU General Public License as published by
      9     the Free Software Foundation, either version 3 of the License, or
     10     (at your option) any later version.
     11 
     12     This program is distributed in the hope that it will be useful,
     13     but WITHOUT ANY WARRANTY; without even the implied warranty of
     14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     15     GNU General Public License for more details.
     16 
     17 
     18                    GNU GENERAL PUBLIC LICENSE
     19                        Version 3, 29 June 2007
     20 
     21  Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
     22  Everyone is permitted to copy and distribute verbatim copies
     23  of this license document, but changing it is not allowed.
     24 
     25                             Preamble
     26 
     27   The GNU General Public License is a free, copyleft license for
     28 software and other kinds of works.
     29 
     30   The licenses for most software and other practical works are designed
     31 to take away your freedom to share and change the works.  By contrast,
     32 the GNU General Public License is intended to guarantee your freedom to
     33 share and change all versions of a program--to make sure it remains free
     34 software for all its users.  We, the Free Software Foundation, use the
     35 GNU General Public License for most of our software; it applies also to
     36 any other work released this way by its authors.  You can apply it to
     37 your programs, too.
     38 
     39   When we speak of free software, we are referring to freedom, not
     40 price.  Our General Public Licenses are designed to make sure that you
     41 have the freedom to distribute copies of free software (and charge for
     42 them if you wish), that you receive source code or can get it if you
     43 want it, that you can change the software or use pieces of it in new
     44 free programs, and that you know you can do these things.
     45 
     46   To protect your rights, we need to prevent others from denying you
     47 these rights or asking you to surrender the rights.  Therefore, you have
     48 certain responsibilities if you distribute copies of the software, or if
     49 you modify it: responsibilities to respect the freedom of others.
     50 
     51   For example, if you distribute copies of such a program, whether
     52 gratis or for a fee, you must pass on to the recipients the same
     53 freedoms that you received.  You must make sure that they, too, receive
     54 or can get the source code.  And you must show them these terms so they
     55 know their rights.
     56 
     57   Developers that use the GNU GPL protect your rights with two steps:
     58 (1) assert copyright on the software, and (2) offer you this License
     59 giving you legal permission to copy, distribute and/or modify it.
     60 
     61   For the developers' and authors' protection, the GPL clearly explains
     62 that there is no warranty for this free software.  For both users' and
     63 authors' sake, the GPL requires that modified versions be marked as
     64 changed, so that their problems will not be attributed erroneously to
     65 authors of previous versions.
     66 
     67   Some devices are designed to deny users access to install or run
     68 modified versions of the software inside them, although the manufacturer
     69 can do so.  This is fundamentally incompatible with the aim of
     70 protecting users' freedom to change the software.  The systematic
     71 pattern of such abuse occurs in the area of products for individuals to
     72 use, which is precisely where it is most unacceptable.  Therefore, we
     73 have designed this version of the GPL to prohibit the practice for those
     74 products.  If such problems arise substantially in other domains, we
     75 stand ready to extend this provision to those domains in future versions
     76 of the GPL, as needed to protect the freedom of users.
     77 
     78   Finally, every program is threatened constantly by software patents.
     79 States should not allow patents to restrict development and use of
     80 software on general-purpose computers, but in those that do, we wish to
     81 avoid the special danger that patents applied to a free program could
     82 make it effectively proprietary.  To prevent this, the GPL assures that
     83 patents cannot be used to render the program non-free.
     84 
     85   The precise terms and conditions for copying, distribution and
     86 modification follow.
     87 
     88                        TERMS AND CONDITIONS
     89 
     90   0. Definitions.
     91 
     92   "This License" refers to version 3 of the GNU General Public License.
     93 
     94   "Copyright" also means copyright-like laws that apply to other kinds of
     95 works, such as semiconductor masks.
     96 
     97   "The Program" refers to any copyrightable work licensed under this
     98 License.  Each licensee is addressed as "you".  "Licensees" and
     99 "recipients" may be individuals or organizations.
    100 
    101   To "modify" a work means to copy from or adapt all or part of the work
    102 in a fashion requiring copyright permission, other than the making of an
    103 exact copy.  The resulting work is called a "modified version" of the
    104 earlier work or a work "based on" the earlier work.
    105 
    106   A "covered work" means either the unmodified Program or a work based
    107 on the Program.
    108 
    109   To "propagate" a work means to do anything with it that, without
    110 permission, would make you directly or secondarily liable for
    111 infringement under applicable copyright law, except executing it on a
    112 computer or modifying a private copy.  Propagation includes copying,
    113 distribution (with or without modification), making available to the
    114 public, and in some countries other activities as well.
    115 
    116   To "convey" a work means any kind of propagation that enables other
    117 parties to make or receive copies.  Mere interaction with a user through
    118 a computer network, with no transfer of a copy, is not conveying.
    119 
    120   An interactive user interface displays "Appropriate Legal Notices"
    121 to the extent that it includes a convenient and prominently visible
    122 feature that (1) displays an appropriate copyright notice, and (2)
    123 tells the user that there is no warranty for the work (except to the
    124 extent that warranties are provided), that licensees may convey the
    125 work under this License, and how to view a copy of this License.  If
    126 the interface presents a list of user commands or options, such as a
    127 menu, a prominent item in the list meets this criterion.
    128 
    129   1. Source Code.
    130 
    131   The "source code" for a work means the preferred form of the work
    132 for making modifications to it.  "Object code" means any non-source
    133 form of a work.
    134 
    135   A "Standard Interface" means an interface that either is an official
    136 standard defined by a recognized standards body, or, in the case of
    137 interfaces specified for a particular programming language, one that
    138 is widely used among developers working in that language.
    139 
    140   The "System Libraries" of an executable work include anything, other
    141 than the work as a whole, that (a) is included in the normal form of
    142 packaging a Major Component, but which is not part of that Major
    143 Component, and (b) serves only to enable use of the work with that
    144 Major Component, or to implement a Standard Interface for which an
    145 implementation is available to the public in source code form.  A
    146 "Major Component", in this context, means a major essential component
    147 (kernel, window system, and so on) of the specific operating system
    148 (if any) on which the executable work runs, or a compiler used to
    149 produce the work, or an object code interpreter used to run it.
    150 
    151   The "Corresponding Source" for a work in object code form means all
    152 the source code needed to generate, install, and (for an executable
    153 work) run the object code and to modify the work, including scripts to
    154 control those activities.  However, it does not include the work's
    155 System Libraries, or general-purpose tools or generally available free
    156 programs which are used unmodified in performing those activities but
    157 which are not part of the work.  For example, Corresponding Source
    158 includes interface definition files associated with source files for
    159 the work, and the source code for shared libraries and dynamically
    160 linked subprograms that the work is specifically designed to require,
    161 such as by intimate data communication or control flow between those
    162 subprograms and other parts of the work.
    163 
    164   The Corresponding Source need not include anything that users
    165 can regenerate automatically from other parts of the Corresponding
    166 Source.
    167 
    168   The Corresponding Source for a work in source code form is that
    169 same work.
    170 
    171   2. Basic Permissions.
    172 
    173   All rights granted under this License are granted for the term of
    174 copyright on the Program, and are irrevocable provided the stated
    175 conditions are met.  This License explicitly affirms your unlimited
    176 permission to run the unmodified Program.  The output from running a
    177 covered work is covered by this License only if the output, given its
    178 content, constitutes a covered work.  This License acknowledges your
    179 rights of fair use or other equivalent, as provided by copyright law.
    180 
    181   You may make, run and propagate covered works that you do not
    182 convey, without conditions so long as your license otherwise remains
    183 in force.  You may convey covered works to others for the sole purpose
    184 of having them make modifications exclusively for you, or provide you
    185 with facilities for running those works, provided that you comply with
    186 the terms of this License in conveying all material for which you do
    187 not control copyright.  Those thus making or running the covered works
    188 for you must do so exclusively on your behalf, under your direction
    189 and control, on terms that prohibit them from making any copies of
    190 your copyrighted material outside their relationship with you.
    191 
    192   Conveying under any other circumstances is permitted solely under
    193 the conditions stated below.  Sublicensing is not allowed; section 10
    194 makes it unnecessary.
    195 
    196   3. Protecting Users' Legal Rights From Anti-Circumvention Law.
    197 
    198   No covered work shall be deemed part of an effective technological
    199 measure under any applicable law fulfilling obligations under article
    200 11 of the WIPO copyright treaty adopted on 20 December 1996, or
    201 similar laws prohibiting or restricting circumvention of such
    202 measures.
    203 
    204   When you convey a covered work, you waive any legal power to forbid
    205 circumvention of technological measures to the extent such circumvention
    206 is effected by exercising rights under this License with respect to
    207 the covered work, and you disclaim any intention to limit operation or
    208 modification of the work as a means of enforcing, against the work's
    209 users, your or third parties' legal rights to forbid circumvention of
    210 technological measures.
    211 
    212   4. Conveying Verbatim Copies.
    213 
    214   You may convey verbatim copies of the Program's source code as you
    215 receive it, in any medium, provided that you conspicuously and
    216 appropriately publish on each copy an appropriate copyright notice;
    217 keep intact all notices stating that this License and any
    218 non-permissive terms added in accord with section 7 apply to the code;
    219 keep intact all notices of the absence of any warranty; and give all
    220 recipients a copy of this License along with the Program.
    221 
    222   You may charge any price or no price for each copy that you convey,
    223 and you may offer support or warranty protection for a fee.
    224 
    225   5. Conveying Modified Source Versions.
    226 
    227   You may convey a work based on the Program, or the modifications to
    228 produce it from the Program, in the form of source code under the
    229 terms of section 4, provided that you also meet all of these conditions:
    230 
    231     a) The work must carry prominent notices stating that you modified
    232     it, and giving a relevant date.
    233 
    234     b) The work must carry prominent notices stating that it is
    235     released under this License and any conditions added under section
    236     7.  This requirement modifies the requirement in section 4 to
    237     "keep intact all notices".
    238 
    239     c) You must license the entire work, as a whole, under this
    240     License to anyone who comes into possession of a copy.  This
    241     License will therefore apply, along with any applicable section 7
    242     additional terms, to the whole of the work, and all its parts,
    243     regardless of how they are packaged.  This License gives no
    244     permission to license the work in any other way, but it does not
    245     invalidate such permission if you have separately received it.
    246 
    247     d) If the work has interactive user interfaces, each must display
    248     Appropriate Legal Notices; however, if the Program has interactive
    249     interfaces that do not display Appropriate Legal Notices, your
    250     work need not make them do so.
    251 
    252   A compilation of a covered work with other separate and independent
    253 works, which are not by their nature extensions of the covered work,
    254 and which are not combined with it such as to form a larger program,
    255 in or on a volume of a storage or distribution medium, is called an
    256 "aggregate" if the compilation and its resulting copyright are not
    257 used to limit the access or legal rights of the compilation's users
    258 beyond what the individual works permit.  Inclusion of a covered work
    259 in an aggregate does not cause this License to apply to the other
    260 parts of the aggregate.
    261 
    262   6. Conveying Non-Source Forms.
    263 
    264   You may convey a covered work in object code form under the terms
    265 of sections 4 and 5, provided that you also convey the
    266 machine-readable Corresponding Source under the terms of this License,
    267 in one of these ways:
    268 
    269     a) Convey the object code in, or embodied in, a physical product
    270     (including a physical distribution medium), accompanied by the
    271     Corresponding Source fixed on a durable physical medium
    272     customarily used for software interchange.
    273 
    274     b) Convey the object code in, or embodied in, a physical product
    275     (including a physical distribution medium), accompanied by a
    276     written offer, valid for at least three years and valid for as
    277     long as you offer spare parts or customer support for that product
    278     model, to give anyone who possesses the object code either (1) a
    279     copy of the Corresponding Source for all the software in the
    280     product that is covered by this License, on a durable physical
    281     medium customarily used for software interchange, for a price no
    282     more than your reasonable cost of physically performing this
    283     conveying of source, or (2) access to copy the
    284     Corresponding Source from a network server at no charge.
    285 
    286     c) Convey individual copies of the object code with a copy of the
    287     written offer to provide the Corresponding Source.  This
    288     alternative is allowed only occasionally and noncommercially, and
    289     only if you received the object code with such an offer, in accord
    290     with subsection 6b.
    291 
    292     d) Convey the object code by offering access from a designated
    293     place (gratis or for a charge), and offer equivalent access to the
    294     Corresponding Source in the same way through the same place at no
    295     further charge.  You need not require recipients to copy the
    296     Corresponding Source along with the object code.  If the place to
    297     copy the object code is a network server, the Corresponding Source
    298     may be on a different server (operated by you or a third party)
    299     that supports equivalent copying facilities, provided you maintain
    300     clear directions next to the object code saying where to find the
    301     Corresponding Source.  Regardless of what server hosts the
    302     Corresponding Source, you remain obligated to ensure that it is
    303     available for as long as needed to satisfy these requirements.
    304 
    305     e) Convey the object code using peer-to-peer transmission, provided
    306     you inform other peers where the object code and Corresponding
    307     Source of the work are being offered to the general public at no
    308     charge under subsection 6d.
    309 
    310   A separable portion of the object code, whose source code is excluded
    311 from the Corresponding Source as a System Library, need not be
    312 included in conveying the object code work.
    313 
    314   A "User Product" is either (1) a "consumer product", which means any
    315 tangible personal property which is normally used for personal, family,
    316 or household purposes, or (2) anything designed or sold for incorporation
    317 into a dwelling.  In determining whether a product is a consumer product,
    318 doubtful cases shall be resolved in favor of coverage.  For a particular
    319 product received by a particular user, "normally used" refers to a
    320 typical or common use of that class of product, regardless of the status
    321 of the particular user or of the way in which the particular user
    322 actually uses, or expects or is expected to use, the product.  A product
    323 is a consumer product regardless of whether the product has substantial
    324 commercial, industrial or non-consumer uses, unless such uses represent
    325 the only significant mode of use of the product.
    326 
    327   "Installation Information" for a User Product means any methods,
    328 procedures, authorization keys, or other information required to install
    329 and execute modified versions of a covered work in that User Product from
    330 a modified version of its Corresponding Source.  The information must
    331 suffice to ensure that the continued functioning of the modified object
    332 code is in no case prevented or interfered with solely because
    333 modification has been made.
    334 
    335   If you convey an object code work under this section in, or with, or
    336 specifically for use in, a User Product, and the conveying occurs as
    337 part of a transaction in which the right of possession and use of the
    338 User Product is transferred to the recipient in perpetuity or for a
    339 fixed term (regardless of how the transaction is characterized), the
    340 Corresponding Source conveyed under this section must be accompanied
    341 by the Installation Information.  But this requirement does not apply
    342 if neither you nor any third party retains the ability to install
    343 modified object code on the User Product (for example, the work has
    344 been installed in ROM).
    345 
    346   The requirement to provide Installation Information does not include a
    347 requirement to continue to provide support service, warranty, or updates
    348 for a work that has been modified or installed by the recipient, or for
    349 the User Product in which it has been modified or installed.  Access to a
    350 network may be denied when the modification itself materially and
    351 adversely affects the operation of the network or violates the rules and
    352 protocols for communication across the network.
    353 
    354   Corresponding Source conveyed, and Installation Information provided,
    355 in accord with this section must be in a format that is publicly
    356 documented (and with an implementation available to the public in
    357 source code form), and must require no special password or key for
    358 unpacking, reading or copying.
    359 
    360   7. Additional Terms.
    361 
    362   "Additional permissions" are terms that supplement the terms of this
    363 License by making exceptions from one or more of its conditions.
    364 Additional permissions that are applicable to the entire Program shall
    365 be treated as though they were included in this License, to the extent
    366 that they are valid under applicable law.  If additional permissions
    367 apply only to part of the Program, that part may be used separately
    368 under those permissions, but the entire Program remains governed by
    369 this License without regard to the additional permissions.
    370 
    371   When you convey a copy of a covered work, you may at your option
    372 remove any additional permissions from that copy, or from any part of
    373 it.  (Additional permissions may be written to require their own
    374 removal in certain cases when you modify the work.)  You may place
    375 additional permissions on material, added by you to a covered work,
    376 for which you have or can give appropriate copyright permission.
    377 
    378   Notwithstanding any other provision of this License, for material you
    379 add to a covered work, you may (if authorized by the copyright holders of
    380 that material) supplement the terms of this License with terms:
    381 
    382     a) Disclaiming warranty or limiting liability differently from the
    383     terms of sections 15 and 16 of this License; or
    384 
    385     b) Requiring preservation of specified reasonable legal notices or
    386     author attributions in that material or in the Appropriate Legal
    387     Notices displayed by works containing it; or
    388 
    389     c) Prohibiting misrepresentation of the origin of that material, or
    390     requiring that modified versions of such material be marked in
    391     reasonable ways as different from the original version; or
    392 
    393     d) Limiting the use for publicity purposes of names of licensors or
    394     authors of the material; or
    395 
    396     e) Declining to grant rights under trademark law for use of some
    397     trade names, trademarks, or service marks; or
    398 
    399     f) Requiring indemnification of licensors and authors of that
    400     material by anyone who conveys the material (or modified versions of
    401     it) with contractual assumptions of liability to the recipient, for
    402     any liability that these contractual assumptions directly impose on
    403     those licensors and authors.
    404 
    405   All other non-permissive additional terms are considered "further
    406 restrictions" within the meaning of section 10.  If the Program as you
    407 received it, or any part of it, contains a notice stating that it is
    408 governed by this License along with a term that is a further
    409 restriction, you may remove that term.  If a license document contains
    410 a further restriction but permits relicensing or conveying under this
    411 License, you may add to a covered work material governed by the terms
    412 of that license document, provided that the further restriction does
    413 not survive such relicensing or conveying.
    414 
    415   If you add terms to a covered work in accord with this section, you
    416 must place, in the relevant source files, a statement of the
    417 additional terms that apply to those files, or a notice indicating
    418 where to find the applicable terms.
    419 
    420   Additional terms, permissive or non-permissive, may be stated in the
    421 form of a separately written license, or stated as exceptions;
    422 the above requirements apply either way.
    423 
    424   8. Termination.
    425 
    426   You may not propagate or modify a covered work except as expressly
    427 provided under this License.  Any attempt otherwise to propagate or
    428 modify it is void, and will automatically terminate your rights under
    429 this License (including any patent licenses granted under the third
    430 paragraph of section 11).
    431 
    432   However, if you cease all violation of this License, then your
    433 license from a particular copyright holder is reinstated (a)
    434 provisionally, unless and until the copyright holder explicitly and
    435 finally terminates your license, and (b) permanently, if the copyright
    436 holder fails to notify you of the violation by some reasonable means
    437 prior to 60 days after the cessation.
    438 
    439   Moreover, your license from a particular copyright holder is
    440 reinstated permanently if the copyright holder notifies you of the
    441 violation by some reasonable means, this is the first time you have
    442 received notice of violation of this License (for any work) from that
    443 copyright holder, and you cure the violation prior to 30 days after
    444 your receipt of the notice.
    445 
    446   Termination of your rights under this section does not terminate the
    447 licenses of parties who have received copies or rights from you under
    448 this License.  If your rights have been terminated and not permanently
    449 reinstated, you do not qualify to receive new licenses for the same
    450 material under section 10.
    451 
    452   9. Acceptance Not Required for Having Copies.
    453 
    454   You are not required to accept this License in order to receive or
    455 run a copy of the Program.  Ancillary propagation of a covered work
    456 occurring solely as a consequence of using peer-to-peer transmission
    457 to receive a copy likewise does not require acceptance.  However,
    458 nothing other than this License grants you permission to propagate or
    459 modify any covered work.  These actions infringe copyright if you do
    460 not accept this License.  Therefore, by modifying or propagating a
    461 covered work, you indicate your acceptance of this License to do so.
    462 
    463   10. Automatic Licensing of Downstream Recipients.
    464 
    465   Each time you convey a covered work, the recipient automatically
    466 receives a license from the original licensors, to run, modify and
    467 propagate that work, subject to this License.  You are not responsible
    468 for enforcing compliance by third parties with this License.
    469 
    470   An "entity transaction" is a transaction transferring control of an
    471 organization, or substantially all assets of one, or subdividing an
    472 organization, or merging organizations.  If propagation of a covered
    473 work results from an entity transaction, each party to that
    474 transaction who receives a copy of the work also receives whatever
    475 licenses to the work the party's predecessor in interest had or could
    476 give under the previous paragraph, plus a right to possession of the
    477 Corresponding Source of the work from the predecessor in interest, if
    478 the predecessor has it or can get it with reasonable efforts.
    479 
    480   You may not impose any further restrictions on the exercise of the
    481 rights granted or affirmed under this License.  For example, you may
    482 not impose a license fee, royalty, or other charge for exercise of
    483 rights granted under this License, and you may not initiate litigation
    484 (including a cross-claim or counterclaim in a lawsuit) alleging that
    485 any patent claim is infringed by making, using, selling, offering for
    486 sale, or importing the Program or any portion of it.
    487 
    488   11. Patents.
    489 
    490   A "contributor" is a copyright holder who authorizes use under this
    491 License of the Program or a work on which the Program is based.  The
    492 work thus licensed is called the contributor's "contributor version".
    493 
    494   A contributor's "essential patent claims" are all patent claims
    495 owned or controlled by the contributor, whether already acquired or
    496 hereafter acquired, that would be infringed by some manner, permitted
    497 by this License, of making, using, or selling its contributor version,
    498 but do not include claims that would be infringed only as a
    499 consequence of further modification of the contributor version.  For
    500 purposes of this definition, "control" includes the right to grant
    501 patent sublicenses in a manner consistent with the requirements of
    502 this License.
    503 
    504   Each contributor grants you a non-exclusive, worldwide, royalty-free
    505 patent license under the contributor's essential patent claims, to
    506 make, use, sell, offer for sale, import and otherwise run, modify and
    507 propagate the contents of its contributor version.
    508 
    509   In the following three paragraphs, a "patent license" is any express
    510 agreement or commitment, however denominated, not to enforce a patent
    511 (such as an express permission to practice a patent or covenant not to
    512 sue for patent infringement).  To "grant" such a patent license to a
    513 party means to make such an agreement or commitment not to enforce a
    514 patent against the party.
    515 
    516   If you convey a covered work, knowingly relying on a patent license,
    517 and the Corresponding Source of the work is not available for anyone
    518 to copy, free of charge and under the terms of this License, through a
    519 publicly available network server or other readily accessible means,
    520 then you must either (1) cause the Corresponding Source to be so
    521 available, or (2) arrange to deprive yourself of the benefit of the
    522 patent license for this particular work, or (3) arrange, in a manner
    523 consistent with the requirements of this License, to extend the patent
    524 license to downstream recipients.  "Knowingly relying" means you have
    525 actual knowledge that, but for the patent license, your conveying the
    526 covered work in a country, or your recipient's use of the covered work
    527 in a country, would infringe one or more identifiable patents in that
    528 country that you have reason to believe are valid.
    529 
    530   If, pursuant to or in connection with a single transaction or
    531 arrangement, you convey, or propagate by procuring conveyance of, a
    532 covered work, and grant a patent license to some of the parties
    533 receiving the covered work authorizing them to use, propagate, modify
    534 or convey a specific copy of the covered work, then the patent license
    535 you grant is automatically extended to all recipients of the covered
    536 work and works based on it.
    537 
    538   A patent license is "discriminatory" if it does not include within
    539 the scope of its coverage, prohibits the exercise of, or is
    540 conditioned on the non-exercise of one or more of the rights that are
    541 specifically granted under this License.  You may not convey a covered
    542 work if you are a party to an arrangement with a third party that is
    543 in the business of distributing software, under which you make payment
    544 to the third party based on the extent of your activity of conveying
    545 the work, and under which the third party grants, to any of the
    546 parties who would receive the covered work from you, a discriminatory
    547 patent license (a) in connection with copies of the covered work
    548 conveyed by you (or copies made from those copies), or (b) primarily
    549 for and in connection with specific products or compilations that
    550 contain the covered work, unless you entered into that arrangement,
    551 or that patent license was granted, prior to 28 March 2007.
    552 
    553   Nothing in this License shall be construed as excluding or limiting
    554 any implied license or other defenses to infringement that may
    555 otherwise be available to you under applicable patent law.
    556 
    557   12. No Surrender of Others' Freedom.
    558 
    559   If conditions are imposed on you (whether by court order, agreement or
    560 otherwise) that contradict the conditions of this License, they do not
    561 excuse you from the conditions of this License.  If you cannot convey a
    562 covered work so as to satisfy simultaneously your obligations under this
    563 License and any other pertinent obligations, then as a consequence you may
    564 not convey it at all.  For example, if you agree to terms that obligate you
    565 to collect a royalty for further conveying from those to whom you convey
    566 the Program, the only way you could satisfy both those terms and this
    567 License would be to refrain entirely from conveying the Program.
    568 
    569   13. Use with the GNU Affero General Public License.
    570 
    571   Notwithstanding any other provision of this License, you have
    572 permission to link or combine any covered work with a work licensed
    573 under version 3 of the GNU Affero General Public License into a single
    574 combined work, and to convey the resulting work.  The terms of this
    575 License will continue to apply to the part which is the covered work,
    576 but the special requirements of the GNU Affero General Public License,
    577 section 13, concerning interaction through a network will apply to the
    578 combination as such.
    579 
    580   14. Revised Versions of this License.
    581 
    582   The Free Software Foundation may publish revised and/or new versions of
    583 the GNU General Public License from time to time.  Such new versions will
    584 be similar in spirit to the present version, but may differ in detail to
    585 address new problems or concerns.
    586 
    587   Each version is given a distinguishing version number.  If the
    588 Program specifies that a certain numbered version of the GNU General
    589 Public License "or any later version" applies to it, you have the
    590 option of following the terms and conditions either of that numbered
    591 version or of any later version published by the Free Software
    592 Foundation.  If the Program does not specify a version number of the
    593 GNU General Public License, you may choose any version ever published
    594 by the Free Software Foundation.
    595 
    596   If the Program specifies that a proxy can decide which future
    597 versions of the GNU General Public License can be used, that proxy's
    598 public statement of acceptance of a version permanently authorizes you
    599 to choose that version for the Program.
    600 
    601   Later license versions may give you additional or different
    602 permissions.  However, no additional obligations are imposed on any
    603 author or copyright holder as a result of your choosing to follow a
    604 later version.
    605 
    606   15. Disclaimer of Warranty.
    607 
    608   THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
    609 APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
    610 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
    611 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
    612 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
    613 PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
    614 IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
    615 ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
    616 
    617   16. Limitation of Liability.
    618 
    619   IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
    620 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
    621 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
    622 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
    623 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
    624 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
    625 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
    626 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
    627 SUCH DAMAGES.
    628 
    629   17. Interpretation of Sections 15 and 16.
    630 
    631   If the disclaimer of warranty and limitation of liability provided
    632 above cannot be given local legal effect according to their terms,
    633 reviewing courts shall apply local law that most closely approximates
    634 an absolute waiver of all civil liability in connection with the
    635 Program, unless a warranty or assumption of liability accompanies a
    636 copy of the Program in return for a fee.