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0001 GNU GENERAL PUBLIC LICENSE
0002 Version 3, 29 June 2007
0003 
0004 Copyright © 2007 Free Software Foundation, Inc. <http://fsf.org/>
0005 
0006 Everyone is permitted to copy and distribute verbatim copies of this license
0007 document, but changing it is not allowed.
0008 
0009 Preamble
0010 
0011 The GNU General Public License is a free, copyleft license for software and
0012 other kinds of works.
0013 
0014 The licenses for most software and other practical works are designed to take
0015 away your freedom to share and change the works. By contrast, the GNU General
0016 Public License is intended to guarantee your freedom to share and change all
0017 versions of a program--to make sure it remains free software for all its users.
0018 We, the Free Software Foundation, use the GNU General Public License for most
0019 of our software; it applies also to any other work released this way by its
0020 authors. You can apply it to your programs, too.
0021 
0022 When we speak of free software, we are referring to freedom, not price. Our
0023 General Public Licenses are designed to make sure that you have the freedom
0024 to distribute copies of free software (and charge for them if you wish), that
0025 you receive source code or can get it if you want it, that you can change
0026 the software or use pieces of it in new free programs, and that you know you
0027 can do these things.
0028 
0029 To protect your rights, we need to prevent others from denying you these rights
0030 or asking you to surrender the rights. Therefore, you have certain responsibilities
0031 if you distribute copies of the software, or if you modify it: responsibilities
0032 to respect the freedom of others.
0033 
0034 For example, if you distribute copies of such a program, whether gratis or
0035 for a fee, you must pass on to the recipients the same freedoms that you received.
0036 You must make sure that they, too, receive or can get the source code. And
0037 you must show them these terms so they know their rights.
0038 
0039 Developers that use the GNU GPL protect your rights with two steps: (1) assert
0040 copyright on the software, and (2) offer you this License giving you legal
0041 permission to copy, distribute and/or modify it.
0042 
0043 For the developers' and authors' protection, the GPL clearly explains that
0044 there is no warranty for this free software. For both users' and authors'
0045 sake, the GPL requires that modified versions be marked as changed, so that
0046 their problems will not be attributed erroneously to authors of previous versions.
0047 
0048 Some devices are designed to deny users access to install or run modified
0049 versions of the software inside them, although the manufacturer can do so.
0050 This is fundamentally incompatible with the aim of protecting users' freedom
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0052 area of products for individuals to use, which is precisely where it is most
0053 unacceptable. Therefore, we have designed this version of the GPL to prohibit
0054 the practice for those products. If such problems arise substantially in other
0055 domains, we stand ready to extend this provision to those domains in future
0056 versions of the GPL, as needed to protect the freedom of users.
0057 
0058 Finally, every program is threatened constantly by software patents. States
0059 should not allow patents to restrict development and use of software on general-purpose
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0061 patents applied to a free program could make it effectively proprietary. To
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0064 
0065 The precise terms and conditions for copying, distribution and modification
0066 follow.
0067 
0068 TERMS AND CONDITIONS
0069 
0070 0. Definitions.
0071 
0072 “This License” refers to version 3 of the GNU General Public License.
0073 
0074 “Copyright” also means copyright-like laws that apply to other kinds of works,
0075 such as semiconductor masks.
0076 
0077 “The Program” refers to any copyrightable work licensed under this License.
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0080 
0081 To “modify” a work means to copy from or adapt all or part of the work in
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0086 A “covered work” means either the unmodified Program or a work based on the
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0089 To “propagate” a work means to do anything with it that, without permission,
0090 would make you directly or secondarily liable for infringement under applicable
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0092 Propagation includes copying, distribution (with or without modification),
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0100 An interactive user interface displays “Appropriate Legal Notices” to the
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0107 
0108 1. Source Code.
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0127 The “Corresponding Source” for a work in object code form means all the source
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0139 The Corresponding Source need not include anything that users can regenerate
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0142 The Corresponding Source for a work in source code form is that same work.
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0144 2. Basic Permissions.
0145 All rights granted under this License are granted for the term of copyright
0146 on the Program, and are irrevocable provided the stated conditions are met.
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0148 Program. The output from running a covered work is covered by this License
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0152 
0153 You may make, run and propagate covered works that you do not convey, without
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0163 Conveying under any other circumstances is permitted solely under the conditions
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0165 
0166 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
0167 No covered work shall be deemed part of an effective technological measure
0168 under any applicable law fulfilling obligations under article 11 of the WIPO
0169 copyright treaty adopted on 20 December 1996, or similar laws prohibiting
0170 or restricting circumvention of such measures.
0171 
0172 When you convey a covered work, you waive any legal power to forbid circumvention
0173 of technological measures to the extent such circumvention is effected by
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0175 you disclaim any intention to limit operation or modification of the work
0176 as a means of enforcing, against the work's users, your or third parties'
0177 legal rights to forbid circumvention of technological measures.
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0179 4. Conveying Verbatim Copies.
0180 You may convey verbatim copies of the Program's source code as you receive
0181 it, in any medium, provided that you conspicuously and appropriately publish
0182 on each copy an appropriate copyright notice; keep intact all notices stating
0183 that this License and any non-permissive terms added in accord with section
0184 7 apply to the code; keep intact all notices of the absence of any warranty;
0185 and give all recipients a copy of this License along with the Program.
0186 
0187 You may charge any price or no price for each copy that you convey, and you
0188 may offer support or warranty protection for a fee.
0189 
0190 5. Conveying Modified Source Versions.
0191 You may convey a work based on the Program, or the modifications to produce
0192 it from the Program, in the form of source code under the terms of section
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0194 
0195 a) The work must carry prominent notices stating that you modified it, and
0196 giving a relevant date.
0197 
0198 b) The work must carry prominent notices stating that it is released under
0199 this License and any conditions added under section 7. This requirement modifies
0200 the requirement in section 4 to “keep intact all notices”.
0201 
0202 c) You must license the entire work, as a whole, under this License to anyone
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0208 
0209 d) If the work has interactive user interfaces, each must display Appropriate
0210 Legal Notices; however, if the Program has interactive interfaces that do
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0212 
0213 A compilation of a covered work with other separate and independent works,
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0218 of the compilation's users beyond what the individual works permit. Inclusion
0219 of a covered work in an aggregate does not cause this License to apply to
0220 the other parts of the aggregate.
0221 
0222 6. Conveying Non-Source Forms.
0223 You may convey a covered work in object code form under the terms of sections
0224 4 and 5, provided that you also convey the machine-readable Corresponding
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0226 
0227 a) Convey the object code in, or embodied in, a physical product (including
0228 a physical distribution medium), accompanied by the Corresponding Source fixed
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0230 
0231 b) Convey the object code in, or embodied in, a physical product (including
0232 a physical distribution medium), accompanied by a written offer, valid for
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0234 support for that product model, to give anyone who possesses the object code
0235 either (1) a copy of the Corresponding Source for all the software in the
0236 product that is covered by this License, on a durable physical medium customarily
0237 used for software interchange, for a price no more than your reasonable cost
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0239 Corresponding Source from a network server at no charge.
0240 
0241 c) Convey individual copies of the object code with a copy of the written
0242 offer to provide the Corresponding Source. This alternative is allowed only
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0245 
0246 d) Convey the object code by offering access from a designated place (gratis
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0250 code. If the place to copy the object code is a network server, the Corresponding
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0255 that it is available for as long as needed to satisfy these requirements.
0256 
0257 e) Convey the object code using peer-to-peer transmission, provided you inform
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0260 
0261 A separable portion of the object code, whose source code is excluded from
0262 the Corresponding Source as a System Library, need not be included in conveying
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0264 
0265 A “User Product” is either (1) a “consumer product”, which means any tangible
0266 personal property which is normally used for personal, family, or household
0267 purposes, or (2) anything designed or sold for incorporation into a dwelling.
0268 In determining whether a product is a consumer product, doubtful cases shall
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0270 user, “normally used” refers to a typical or common use of that class of product,
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0273 A product is a consumer product regardless of whether the product has substantial
0274 commercial, industrial or non-consumer uses, unless such uses represent the
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0276 
0277 “Installation Information” for a User Product means any methods, procedures,
0278 authorization keys, or other information required to install and execute modified
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0280 its Corresponding Source. The information must suffice to ensure that the
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0283 
0284 If you convey an object code work under this section in, or with, or specifically
0285 for use in, a User Product, and the conveying occurs as part of a transaction
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0293 
0294 The requirement to provide Installation Information does not include a requirement
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0297 which it has been modified or installed. Access to a network may be denied
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0300 the network.
0301 
0302 Corresponding Source conveyed, and Installation Information provided, in accord
0303 with this section must be in a format that is publicly documented (and with
0304 an implementation available to the public in source code form), and must require
0305 no special password or key for unpacking, reading or copying.
0306 
0307 7. Additional Terms.
0308 “Additional permissions” are terms that supplement the terms of this License
0309 by making exceptions from one or more of its conditions. Additional permissions
0310 that are applicable to the entire Program shall be treated as though they
0311 were included in this License, to the extent that they are valid under applicable
0312 law. If additional permissions apply only to part of the Program, that part
0313 may be used separately under those permissions, but the entire Program remains
0314 governed by this License without regard to the additional permissions.
0315 
0316 When you convey a copy of a covered work, you may at your option remove any
0317 additional permissions from that copy, or from any part of it. (Additional
0318 permissions may be written to require their own removal in certain cases when
0319 you modify the work.) You may place additional permissions on material, added
0320 by you to a covered work, for which you have or can give appropriate copyright
0321 permission.
0322 
0323 Notwithstanding any other provision of this License, for material you add
0324 to a covered work, you may (if authorized by the copyright holders of that
0325 material) supplement the terms of this License with terms:
0326 
0327 a) Disclaiming warranty or limiting liability differently from the terms of
0328 sections 15 and 16 of this License; or
0329 
0330 b) Requiring preservation of specified reasonable legal notices or author
0331 attributions in that material or in the Appropriate Legal Notices displayed
0332 by works containing it; or
0333 
0334 c) Prohibiting misrepresentation of the origin of that material, or requiring
0335 that modified versions of such material be marked in reasonable ways as different
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0337 
0338 d) Limiting the use for publicity purposes of names of licensors or authors
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0340 
0341 e) Declining to grant rights under trademark law for use of some trade names,
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0343 
0344 f) Requiring indemnification of licensors and authors of that material by
0345 anyone who conveys the material (or modified versions of it) with contractual
0346 assumptions of liability to the recipient, for any liability that these contractual
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0348 
0349 All other non-permissive additional terms are considered “further restrictions”
0350 within the meaning of section 10. If the Program as you received it, or any
0351 part of it, contains a notice stating that it is governed by this License
0352 along with a term that is a further restriction, you may remove that term.
0353 If a license document contains a further restriction but permits relicensing
0354 or conveying under this License, you may add to a covered work material governed
0355 by the terms of that license document, provided that the further restriction
0356 does not survive such relicensing or conveying.
0357 
0358 If you add terms to a covered work in accord with this section, you must place,
0359 in the relevant source files, a statement of the additional terms that apply
0360 to those files, or a notice indicating where to find the applicable terms.
0361 
0362 Additional terms, permissive or non-permissive, may be stated in the form
0363 of a separately written license, or stated as exceptions; the above requirements
0364 apply either way.
0365 
0366 8. Termination.
0367 You may not propagate or modify a covered work except as expressly provided
0368 under this License. Any attempt otherwise to propagate or modify it is void,
0369 and will automatically terminate your rights under this License (including
0370 any patent licenses granted under the third paragraph of section 11).
0371 
0372 However, if you cease all violation of this License, then your license from
0373 a particular copyright holder is reinstated (a) provisionally, unless and
0374 until the copyright holder explicitly and finally terminates your license,
0375 and (b) permanently, if the copyright holder fails to notify you of the violation
0376 by some reasonable means prior to 60 days after the cessation.
0377 
0378 Moreover, your license from a particular copyright holder is reinstated permanently
0379 if the copyright holder notifies you of the violation by some reasonable means,
0380 this is the first time you have received notice of violation of this License
0381 (for any work) from that copyright holder, and you cure the violation prior
0382 to 30 days after your receipt of the notice.
0383 
0384 Termination of your rights under this section does not terminate the licenses
0385 of parties who have received copies or rights from you under this License.
0386 If your rights have been terminated and not permanently reinstated, you do
0387 not qualify to receive new licenses for the same material under section 10.
0388 
0389 9. Acceptance Not Required for Having Copies.
0390 You are not required to accept this License in order to receive or run a copy
0391 of the Program. Ancillary propagation of a covered work occurring solely as
0392 a consequence of using peer-to-peer transmission to receive a copy likewise
0393 does not require acceptance. However, nothing other than this License grants
0394 you permission to propagate or modify any covered work. These actions infringe
0395 copyright if you do not accept this License. Therefore, by modifying or propagating
0396 a covered work, you indicate your acceptance of this License to do so.
0397 
0398 10. Automatic Licensing of Downstream Recipients.
0399 Each time you convey a covered work, the recipient automatically receives
0400 a license from the original licensors, to run, modify and propagate that work,
0401 subject to this License. You are not responsible for enforcing compliance
0402 by third parties with this License.
0403 
0404 An “entity transaction” is a transaction transferring control of an organization,
0405 or substantially all assets of one, or subdividing an organization, or merging
0406 organizations. If propagation of a covered work results from an entity transaction,
0407 each party to that transaction who receives a copy of the work also receives
0408 whatever licenses to the work the party's predecessor in interest had or could
0409 give under the previous paragraph, plus a right to possession of the Corresponding
0410 Source of the work from the predecessor in interest, if the predecessor has
0411 it or can get it with reasonable efforts.
0412 
0413 You may not impose any further restrictions on the exercise of the rights
0414 granted or affirmed under this License. For example, you may not impose a
0415 license fee, royalty, or other charge for exercise of rights granted under
0416 this License, and you may not initiate litigation (including a cross-claim
0417 or counterclaim in a lawsuit) alleging that any patent claim is infringed
0418 by making, using, selling, offering for sale, or importing the Program or
0419 any portion of it.
0420 
0421 11. Patents.
0422 A “contributor” is a copyright holder who authorizes use under this License
0423 of the Program or a work on which the Program is based. The work thus licensed
0424 is called the contributor's “contributor version”.
0425 
0426 A contributor's “essential patent claims” are all patent claims owned or controlled
0427 by the contributor, whether already acquired or hereafter acquired, that would
0428 be infringed by some manner, permitted by this License, of making, using,
0429 or selling its contributor version, but do not include claims that would be
0430 infringed only as a consequence of further modification of the contributor
0431 version. For purposes of this definition, “control” includes the right to
0432 grant patent sublicenses in a manner consistent with the requirements of this
0433 License.
0434 
0435 Each contributor grants you a non-exclusive, worldwide, royalty-free patent
0436 license under the contributor's essential patent claims, to make, use, sell,
0437 offer for sale, import and otherwise run, modify and propagate the contents
0438 of its contributor version.
0439 
0440 In the following three paragraphs, a “patent license” is any express agreement
0441 or commitment, however denominated, not to enforce a patent (such as an express
0442 permission to practice a patent or covenant not to sue for patent infringement).
0443 To “grant” such a patent license to a party means to make such an agreement
0444 or commitment not to enforce a patent against the party.
0445 
0446 If you convey a covered work, knowingly relying on a patent license, and the
0447 Corresponding Source of the work is not available for anyone to copy, free
0448 of charge and under the terms of this License, through a publicly available
0449 network server or other readily accessible means, then you must either (1)
0450 cause the Corresponding Source to be so available, or (2) arrange to deprive
0451 yourself of the benefit of the patent license for this particular work, or
0452 (3) arrange, in a manner consistent with the requirements of this License,
0453 to extend the patent license to downstream recipients. “Knowingly relying”
0454 means you have actual knowledge that, but for the patent license, your conveying
0455 the covered work in a country, or your recipient's use of the covered work
0456 in a country, would infringe one or more identifiable patents in that country
0457 that you have reason to believe are valid.
0458 
0459 If, pursuant to or in connection with a single transaction or arrangement,
0460 you convey, or propagate by procuring conveyance of, a covered work, and grant
0461 a patent license to some of the parties receiving the covered work authorizing
0462 them to use, propagate, modify or convey a specific copy of the covered work,
0463 then the patent license you grant is automatically extended to all recipients
0464 of the covered work and works based on it.
0465 
0466 A patent license is “discriminatory” if it does not include within the scope
0467 of its coverage, prohibits the exercise of, or is conditioned on the non-exercise
0468 of one or more of the rights that are specifically granted under this License.
0469 You may not convey a covered work if you are a party to an arrangement with
0470 a third party that is in the business of distributing software, under which
0471 you make payment to the third party based on the extent of your activity of
0472 conveying the work, and under which the third party grants, to any of the
0473 parties who would receive the covered work from you, a discriminatory patent
0474 license (a) in connection with copies of the covered work conveyed by you
0475 (or copies made from those copies), or (b) primarily for and in connection
0476 with specific products or compilations that contain the covered work, unless
0477 you entered into that arrangement, or that patent license was granted, prior
0478 to 28 March 2007.
0479 
0480 Nothing in this License shall be construed as excluding or limiting any implied
0481 license or other defenses to infringement that may otherwise be available
0482 to you under applicable patent law.
0483 
0484 12. No Surrender of Others' Freedom.
0485 If conditions are imposed on you (whether by court order, agreement or otherwise)
0486 that contradict the conditions of this License, they do not excuse you from
0487 the conditions of this License. If you cannot convey a covered work so as
0488 to satisfy simultaneously your obligations under this License and any other
0489 pertinent obligations, then as a consequence you may not convey it at all.
0490 For example, if you agree to terms that obligate you to collect a royalty
0491 for further conveying from those to whom you convey the Program, the only
0492 way you could satisfy both those terms and this License would be to refrain
0493 entirely from conveying the Program.
0494 
0495 13. Use with the GNU Affero General Public License.
0496 Notwithstanding any other provision of this License, you have permission to
0497 link or combine any covered work with a work licensed under version 3 of the
0498 GNU Affero General Public License into a single combined work, and to convey
0499 the resulting work. The terms of this License will continue to apply to the
0500 part which is the covered work, but the special requirements of the GNU Affero
0501 General Public License, section 13, concerning interaction through a network
0502 will apply to the combination as such.
0503 
0504 14. Revised Versions of this License.
0505 The Free Software Foundation may publish revised and/or new versions of the
0506 GNU General Public License from time to time. Such new versions will be similar
0507 in spirit to the present version, but may differ in detail to address new
0508 problems or concerns.
0509 
0510 Each version is given a distinguishing version number. If the Program specifies
0511 that a certain numbered version of the GNU General Public License “or any
0512 later version” applies to it, you have the option of following the terms and
0513 conditions either of that numbered version or of any later version published
0514 by the Free Software Foundation. If the Program does not specify a version
0515 number of the GNU General Public License, you may choose any version ever
0516 published by the Free Software Foundation.
0517 
0518 If the Program specifies that a proxy can decide which future versions of
0519 the GNU General Public License can be used, that proxy's public statement
0520 of acceptance of a version permanently authorizes you to choose that version
0521 for the Program.
0522 
0523 Later license versions may give you additional or different permissions. However,
0524 no additional obligations are imposed on any author or copyright holder as
0525 a result of your choosing to follow a later version.
0526 
0527 15. Disclaimer of Warranty.
0528 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE
0529 LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
0530 OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER
0531 EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
0532 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
0533 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM
0534 PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
0535 CORRECTION.
0536 
0537 16. Limitation of Liability.
0538 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL
0539 ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM
0540 AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL,
0541 INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO
0542 USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
0543 INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE
0544 PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
0545 PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
0546 
0547 17. Interpretation of Sections 15 and 16.
0548 If the disclaimer of warranty and limitation of liability provided above cannot
0549 be given local legal effect according to their terms, reviewing courts shall
0550 apply local law that most closely approximates an absolute waiver of all civil
0551 liability in connection with the Program, unless a warranty or assumption
0552 of liability accompanies a copy of the Program in return for a fee.
0553 
0554 END OF TERMS AND CONDITIONS
0555 
0556 How to Apply These Terms to Your New Programs
0557 
0558 If you develop a new program, and you want it to be of the greatest possible
0559 use to the public, the best way to achieve this is to make it free software
0560 which everyone can redistribute and change under these terms.
0561 
0562 To do so, attach the following notices to the program. It is safest to attach
0563 them to the start of each source file to most effectively state the exclusion
0564 of warranty; and each file should have at least the “copyright” line and a
0565 pointer to where the full notice is found.
0566 
0567      <one line to give the program's name and a brief idea of what it does.>
0568      Copyright (C) <year>  <name of author>
0569 
0570 This program is free software: you can redistribute it and/or modify it under
0571 the terms of the GNU General Public License as published by the Free Software
0572 Foundation, either version 3 of the License, or (at your option) any later
0573 version.
0574 
0575 This program is distributed in the hope that it will be useful, but WITHOUT
0576 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
0577 FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
0578 
0579 You should have received a copy of the GNU General Public License along with
0580 this program.  If not, see <http://www.gnu.org/licenses/>.
0581 
0582 Also add information on how to contact you by electronic and paper mail.
0583 
0584 If the program does terminal interaction, make it output a short notice like
0585 this when it starts in an interactive mode:
0586 
0587      <program>  Copyright (C) <year>  <name of author>
0588      This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
0589 This is free software, and you are welcome to redistribute it under certain
0590 conditions; type `show c' for details.
0591 
0592 The hypothetical commands `show w' and `show c' should show the appropriate
0593 parts of the General Public License. Of course, your program's commands might
0594 be different; for a GUI interface, you would use an “about box”.
0595 
0596 You should also get your employer (if you work as a programmer) or school,
0597 if any, to sign a “copyright disclaimer” for the program, if necessary. For
0598 more information on this, and how to apply and follow the GNU GPL, see <http://www.gnu.org/licenses/>.
0599 
0600 The GNU General Public License does not permit incorporating your program
0601 into proprietary programs. If your program is a subroutine library, you may
0602 consider it more useful to permit linking proprietary applications with the
0603 library. If this is what you want to do, use the GNU Lesser General Public
0604 License instead of this License. But first, please read <http://www.gnu.org/philosophy/why-not-lgpl.html>.