licence/gpl-3.0.tex
author František Kučera <franta-hg@frantovo.cz>
Thu, 09 Apr 2009 15:06:48 +0200
changeset 11 481514f85b3a
parent 9 1af54f006439
permissions -rw-r--r--
Doxygen: konfigurační soubor pro generování dokumentace
     1 \documentclass[11pt]{article}
     2 
     3 \title{GNU GENERAL PUBLIC LICENSE}
     4 \date{Version 3, 29 June 2007}
     5 
     6 \begin{document}
     7 \maketitle
     8 
     9 \begin{center}
    10 {\parindent 0in
    11 
    12 Copyright \copyright\  2007 Free Software Foundation, Inc. \texttt{http://fsf.org/}
    13 
    14 \bigskip
    15 Everyone is permitted to copy and distribute verbatim copies of this
    16 
    17 license document, but changing it is not allowed.}
    18 
    19 \end{center}
    20 
    21 \renewcommand{\abstractname}{Preamble}
    22 \begin{abstract}
    23 The GNU General Public License is a free, copyleft license for
    24 software and other kinds of works.
    25 
    26 The licenses for most software and other practical works are designed
    27 to take away your freedom to share and change the works.  By contrast,
    28 the GNU General Public License is intended to guarantee your freedom to
    29 share and change all versions of a program--to make sure it remains free
    30 software for all its users.  We, the Free Software Foundation, use the
    31 GNU General Public License for most of our software; it applies also to
    32 any other work released this way by its authors.  You can apply it to
    33 your programs, too.
    34 
    35 When we speak of free software, we are referring to freedom, not
    36 price.  Our General Public Licenses are designed to make sure that you
    37 have the freedom to distribute copies of free software (and charge for
    38 them if you wish), that you receive source code or can get it if you
    39 want it, that you can change the software or use pieces of it in new
    40 free programs, and that you know you can do these things.
    41 
    42 To protect your rights, we need to prevent others from denying you
    43 these rights or asking you to surrender the rights.  Therefore, you have
    44 certain responsibilities if you distribute copies of the software, or if
    45 you modify it: responsibilities to respect the freedom of others.
    46 
    47 For example, if you distribute copies of such a program, whether
    48 gratis or for a fee, you must pass on to the recipients the same
    49 freedoms that you received.  You must make sure that they, too, receive
    50 or can get the source code.  And you must show them these terms so they
    51 know their rights.
    52 
    53 Developers that use the GNU GPL protect your rights with two steps:
    54 (1) assert copyright on the software, and (2) offer you this License
    55 giving you legal permission to copy, distribute and/or modify it.
    56 
    57 For the developers' and authors' protection, the GPL clearly explains
    58 that there is no warranty for this free software.  For both users' and
    59 authors' sake, the GPL requires that modified versions be marked as
    60 changed, so that their problems will not be attributed erroneously to
    61 authors of previous versions.
    62 
    63 Some devices are designed to deny users access to install or run
    64 modified versions of the software inside them, although the manufacturer
    65 can do so.  This is fundamentally incompatible with the aim of
    66 protecting users' freedom to change the software.  The systematic
    67 pattern of such abuse occurs in the area of products for individuals to
    68 use, which is precisely where it is most unacceptable.  Therefore, we
    69 have designed this version of the GPL to prohibit the practice for those
    70 products.  If such problems arise substantially in other domains, we
    71 stand ready to extend this provision to those domains in future versions
    72 of the GPL, as needed to protect the freedom of users.
    73 
    74 Finally, every program is threatened constantly by software patents.
    75 States should not allow patents to restrict development and use of
    76 software on general-purpose computers, but in those that do, we wish to
    77 avoid the special danger that patents applied to a free program could
    78 make it effectively proprietary.  To prevent this, the GPL assures that
    79 patents cannot be used to render the program non-free.
    80 
    81 The precise terms and conditions for copying, distribution and
    82 modification follow.
    83 \end{abstract}
    84 
    85 \begin{center}
    86 {\Large \sc Terms and Conditions}
    87 \end{center}
    88 
    89 
    90 \begin{enumerate}
    91 
    92 \addtocounter{enumi}{-1}
    93 
    94 \item Definitions.
    95 
    96 ``This License'' refers to version 3 of the GNU General Public License.
    97 
    98 ``Copyright'' also means copyright-like laws that apply to other kinds of
    99 works, such as semiconductor masks.
   100 
   101 ``The Program'' refers to any copyrightable work licensed under this
   102 License.  Each licensee is addressed as ``you''.  ``Licensees'' and
   103 ``recipients'' may be individuals or organizations.
   104 
   105 To ``modify'' a work means to copy from or adapt all or part of the work
   106 in a fashion requiring copyright permission, other than the making of an
   107 exact copy.  The resulting work is called a ``modified version'' of the
   108 earlier work or a work ``based on'' the earlier work.
   109 
   110 A ``covered work'' means either the unmodified Program or a work based
   111 on the Program.
   112 
   113 To ``propagate'' a work means to do anything with it that, without
   114 permission, would make you directly or secondarily liable for
   115 infringement under applicable copyright law, except executing it on a
   116 computer or modifying a private copy.  Propagation includes copying,
   117 distribution (with or without modification), making available to the
   118 public, and in some countries other activities as well.
   119 
   120 To ``convey'' a work means any kind of propagation that enables other
   121 parties to make or receive copies.  Mere interaction with a user through
   122 a computer network, with no transfer of a copy, is not conveying.
   123 
   124 An interactive user interface displays ``Appropriate Legal Notices''
   125 to the extent that it includes a convenient and prominently visible
   126 feature that (1) displays an appropriate copyright notice, and (2)
   127 tells the user that there is no warranty for the work (except to the
   128 extent that warranties are provided), that licensees may convey the
   129 work under this License, and how to view a copy of this License.  If
   130 the interface presents a list of user commands or options, such as a
   131 menu, a prominent item in the list meets this criterion.
   132 
   133 \item Source Code.
   134 
   135 The ``source code'' for a work means the preferred form of the work
   136 for making modifications to it.  ``Object code'' means any non-source
   137 form of a work.
   138 
   139 A ``Standard Interface'' means an interface that either is an official
   140 standard defined by a recognized standards body, or, in the case of
   141 interfaces specified for a particular programming language, one that
   142 is widely used among developers working in that language.
   143 
   144 The ``System Libraries'' of an executable work include anything, other
   145 than the work as a whole, that (a) is included in the normal form of
   146 packaging a Major Component, but which is not part of that Major
   147 Component, and (b) serves only to enable use of the work with that
   148 Major Component, or to implement a Standard Interface for which an
   149 implementation is available to the public in source code form.  A
   150 ``Major Component'', in this context, means a major essential component
   151 (kernel, window system, and so on) of the specific operating system
   152 (if any) on which the executable work runs, or a compiler used to
   153 produce the work, or an object code interpreter used to run it.
   154 
   155 The ``Corresponding Source'' for a work in object code form means all
   156 the source code needed to generate, install, and (for an executable
   157 work) run the object code and to modify the work, including scripts to
   158 control those activities.  However, it does not include the work's
   159 System Libraries, or general-purpose tools or generally available free
   160 programs which are used unmodified in performing those activities but
   161 which are not part of the work.  For example, Corresponding Source
   162 includes interface definition files associated with source files for
   163 the work, and the source code for shared libraries and dynamically
   164 linked subprograms that the work is specifically designed to require,
   165 such as by intimate data communication or control flow between those
   166 subprograms and other parts of the work.
   167 
   168 The Corresponding Source need not include anything that users
   169 can regenerate automatically from other parts of the Corresponding
   170 Source.
   171 
   172 The Corresponding Source for a work in source code form is that
   173 same work.
   174 
   175 \item Basic Permissions.
   176 
   177 All rights granted under this License are granted for the term of
   178 copyright on the Program, and are irrevocable provided the stated
   179 conditions are met.  This License explicitly affirms your unlimited
   180 permission to run the unmodified Program.  The output from running a
   181 covered work is covered by this License only if the output, given its
   182 content, constitutes a covered work.  This License acknowledges your
   183 rights of fair use or other equivalent, as provided by copyright law.
   184 
   185 You may make, run and propagate covered works that you do not
   186 convey, without conditions so long as your license otherwise remains
   187 in force.  You may convey covered works to others for the sole purpose
   188 of having them make modifications exclusively for you, or provide you
   189 with facilities for running those works, provided that you comply with
   190 the terms of this License in conveying all material for which you do
   191 not control copyright.  Those thus making or running the covered works
   192 for you must do so exclusively on your behalf, under your direction
   193 and control, on terms that prohibit them from making any copies of
   194 your copyrighted material outside their relationship with you.
   195 
   196 Conveying under any other circumstances is permitted solely under
   197 the conditions stated below.  Sublicensing is not allowed; section 10
   198 makes it unnecessary.
   199 
   200 \item Protecting Users' Legal Rights From Anti-Circumvention Law.
   201 
   202 No covered work shall be deemed part of an effective technological
   203 measure under any applicable law fulfilling obligations under article
   204 11 of the WIPO copyright treaty adopted on 20 December 1996, or
   205 similar laws prohibiting or restricting circumvention of such
   206 measures.
   207 
   208 When you convey a covered work, you waive any legal power to forbid
   209 circumvention of technological measures to the extent such circumvention
   210 is effected by exercising rights under this License with respect to
   211 the covered work, and you disclaim any intention to limit operation or
   212 modification of the work as a means of enforcing, against the work's
   213 users, your or third parties' legal rights to forbid circumvention of
   214 technological measures.
   215 
   216 \item Conveying Verbatim Copies.
   217 
   218 You may convey verbatim copies of the Program's source code as you
   219 receive it, in any medium, provided that you conspicuously and
   220 appropriately publish on each copy an appropriate copyright notice;
   221 keep intact all notices stating that this License and any
   222 non-permissive terms added in accord with section 7 apply to the code;
   223 keep intact all notices of the absence of any warranty; and give all
   224 recipients a copy of this License along with the Program.
   225 
   226 You may charge any price or no price for each copy that you convey,
   227 and you may offer support or warranty protection for a fee.
   228 
   229 \item Conveying Modified Source Versions.
   230 
   231 You may convey a work based on the Program, or the modifications to
   232 produce it from the Program, in the form of source code under the
   233 terms of section 4, provided that you also meet all of these conditions:
   234   \begin{enumerate}
   235   \item The work must carry prominent notices stating that you modified
   236   it, and giving a relevant date.
   237 
   238   \item The work must carry prominent notices stating that it is
   239   released under this License and any conditions added under section
   240   7.  This requirement modifies the requirement in section 4 to
   241   ``keep intact all notices''.
   242 
   243   \item You must license the entire work, as a whole, under this
   244   License to anyone who comes into possession of a copy.  This
   245   License will therefore apply, along with any applicable section 7
   246   additional terms, to the whole of the work, and all its parts,
   247   regardless of how they are packaged.  This License gives no
   248   permission to license the work in any other way, but it does not
   249   invalidate such permission if you have separately received it.
   250 
   251   \item If the work has interactive user interfaces, each must display
   252   Appropriate Legal Notices; however, if the Program has interactive
   253   interfaces that do not display Appropriate Legal Notices, your
   254   work need not make them do so.
   255 \end{enumerate}
   256 A compilation of a covered work with other separate and independent
   257 works, which are not by their nature extensions of the covered work,
   258 and which are not combined with it such as to form a larger program,
   259 in or on a volume of a storage or distribution medium, is called an
   260 ``aggregate'' if the compilation and its resulting copyright are not
   261 used to limit the access or legal rights of the compilation's users
   262 beyond what the individual works permit.  Inclusion of a covered work
   263 in an aggregate does not cause this License to apply to the other
   264 parts of the aggregate.
   265 
   266 \item Conveying Non-Source Forms.
   267 
   268 You may convey a covered work in object code form under the terms
   269 of sections 4 and 5, provided that you also convey the
   270 machine-readable Corresponding Source under the terms of this License,
   271 in one of these ways:
   272   \begin{enumerate}
   273   \item Convey the object code in, or embodied in, a physical product
   274   (including a physical distribution medium), accompanied by the
   275   Corresponding Source fixed on a durable physical medium
   276   customarily used for software interchange.
   277 
   278   \item Convey the object code in, or embodied in, a physical product
   279   (including a physical distribution medium), accompanied by a
   280   written offer, valid for at least three years and valid for as
   281   long as you offer spare parts or customer support for that product
   282   model, to give anyone who possesses the object code either (1) a
   283   copy of the Corresponding Source for all the software in the
   284   product that is covered by this License, on a durable physical
   285   medium customarily used for software interchange, for a price no
   286   more than your reasonable cost of physically performing this
   287   conveying of source, or (2) access to copy the
   288   Corresponding Source from a network server at no charge.
   289 
   290   \item Convey individual copies of the object code with a copy of the
   291   written offer to provide the Corresponding Source.  This
   292   alternative is allowed only occasionally and noncommercially, and
   293   only if you received the object code with such an offer, in accord
   294   with subsection 6b.
   295 
   296   \item Convey the object code by offering access from a designated
   297   place (gratis or for a charge), and offer equivalent access to the
   298   Corresponding Source in the same way through the same place at no
   299   further charge.  You need not require recipients to copy the
   300   Corresponding Source along with the object code.  If the place to
   301   copy the object code is a network server, the Corresponding Source
   302   may be on a different server (operated by you or a third party)
   303   that supports equivalent copying facilities, provided you maintain
   304   clear directions next to the object code saying where to find the
   305   Corresponding Source.  Regardless of what server hosts the
   306   Corresponding Source, you remain obligated to ensure that it is
   307   available for as long as needed to satisfy these requirements.
   308 
   309   \item Convey the object code using peer-to-peer transmission, provided
   310   you inform other peers where the object code and Corresponding
   311   Source of the work are being offered to the general public at no
   312   charge under subsection 6d.
   313   \end{enumerate}
   314 
   315 A separable portion of the object code, whose source code is excluded
   316 from the Corresponding Source as a System Library, need not be
   317 included in conveying the object code work.
   318 
   319 A ``User Product'' is either (1) a ``consumer product'', which means any
   320 tangible personal property which is normally used for personal, family,
   321 or household purposes, or (2) anything designed or sold for incorporation
   322 into a dwelling.  In determining whether a product is a consumer product,
   323 doubtful cases shall be resolved in favor of coverage.  For a particular
   324 product received by a particular user, ``normally used'' refers to a
   325 typical or common use of that class of product, regardless of the status
   326 of the particular user or of the way in which the particular user
   327 actually uses, or expects or is expected to use, the product.  A product
   328 is a consumer product regardless of whether the product has substantial
   329 commercial, industrial or non-consumer uses, unless such uses represent
   330 the only significant mode of use of the product.
   331 
   332 ``Installation Information'' for a User Product means any methods,
   333 procedures, authorization keys, or other information required to install
   334 and execute modified versions of a covered work in that User Product from
   335 a modified version of its Corresponding Source.  The information must
   336 suffice to ensure that the continued functioning of the modified object
   337 code is in no case prevented or interfered with solely because
   338 modification has been made.
   339 
   340 If you convey an object code work under this section in, or with, or
   341 specifically for use in, a User Product, and the conveying occurs as
   342 part of a transaction in which the right of possession and use of the
   343 User Product is transferred to the recipient in perpetuity or for a
   344 fixed term (regardless of how the transaction is characterized), the
   345 Corresponding Source conveyed under this section must be accompanied
   346 by the Installation Information.  But this requirement does not apply
   347 if neither you nor any third party retains the ability to install
   348 modified object code on the User Product (for example, the work has
   349 been installed in ROM).
   350 
   351 The requirement to provide Installation Information does not include a
   352 requirement to continue to provide support service, warranty, or updates
   353 for a work that has been modified or installed by the recipient, or for
   354 the User Product in which it has been modified or installed.  Access to a
   355 network may be denied when the modification itself materially and
   356 adversely affects the operation of the network or violates the rules and
   357 protocols for communication across the network.
   358 
   359 Corresponding Source conveyed, and Installation Information provided,
   360 in accord with this section must be in a format that is publicly
   361 documented (and with an implementation available to the public in
   362 source code form), and must require no special password or key for
   363 unpacking, reading or copying.
   364 
   365 \item Additional Terms.
   366 
   367 ``Additional permissions'' are terms that supplement the terms of this
   368 License by making exceptions from one or more of its conditions.
   369 Additional permissions that are applicable to the entire Program shall
   370 be treated as though they were included in this License, to the extent
   371 that they are valid under applicable law.  If additional permissions
   372 apply only to part of the Program, that part may be used separately
   373 under those permissions, but the entire Program remains governed by
   374 this License without regard to the additional permissions.
   375 
   376 When you convey a copy of a covered work, you may at your option
   377 remove any additional permissions from that copy, or from any part of
   378 it.  (Additional permissions may be written to require their own
   379 removal in certain cases when you modify the work.)  You may place
   380 additional permissions on material, added by you to a covered work,
   381 for which you have or can give appropriate copyright permission.
   382 
   383 Notwithstanding any other provision of this License, for material you
   384 add to a covered work, you may (if authorized by the copyright holders of
   385 that material) supplement the terms of this License with terms:
   386   \begin{enumerate}
   387   \item Disclaiming warranty or limiting liability differently from the
   388   terms of sections 15 and 16 of this License; or
   389 
   390   \item Requiring preservation of specified reasonable legal notices or
   391   author attributions in that material or in the Appropriate Legal
   392   Notices displayed by works containing it; or
   393 
   394   \item Prohibiting misrepresentation of the origin of that material, or
   395   requiring that modified versions of such material be marked in
   396   reasonable ways as different from the original version; or
   397 
   398   \item Limiting the use for publicity purposes of names of licensors or
   399   authors of the material; or
   400 
   401   \item Declining to grant rights under trademark law for use of some
   402   trade names, trademarks, or service marks; or
   403 
   404   \item Requiring indemnification of licensors and authors of that
   405   material by anyone who conveys the material (or modified versions of
   406   it) with contractual assumptions of liability to the recipient, for
   407   any liability that these contractual assumptions directly impose on
   408   those licensors and authors.
   409   \end{enumerate}
   410 
   411 All other non-permissive additional terms are considered ``further
   412 restrictions'' within the meaning of section 10.  If the Program as you
   413 received it, or any part of it, contains a notice stating that it is
   414 governed by this License along with a term that is a further
   415 restriction, you may remove that term.  If a license document contains
   416 a further restriction but permits relicensing or conveying under this
   417 License, you may add to a covered work material governed by the terms
   418 of that license document, provided that the further restriction does
   419 not survive such relicensing or conveying.
   420 
   421 If you add terms to a covered work in accord with this section, you
   422 must place, in the relevant source files, a statement of the
   423 additional terms that apply to those files, or a notice indicating
   424 where to find the applicable terms.
   425 
   426 Additional terms, permissive or non-permissive, may be stated in the
   427 form of a separately written license, or stated as exceptions;
   428 the above requirements apply either way.
   429 
   430 \item Termination.
   431 
   432 You may not propagate or modify a covered work except as expressly
   433 provided under this License.  Any attempt otherwise to propagate or
   434 modify it is void, and will automatically terminate your rights under
   435 this License (including any patent licenses granted under the third
   436 paragraph of section 11).
   437 
   438 However, if you cease all violation of this License, then your
   439 license from a particular copyright holder is reinstated (a)
   440 provisionally, unless and until the copyright holder explicitly and
   441 finally terminates your license, and (b) permanently, if the copyright
   442 holder fails to notify you of the violation by some reasonable means
   443 prior to 60 days after the cessation.
   444 
   445 Moreover, your license from a particular copyright holder is
   446 reinstated permanently if the copyright holder notifies you of the
   447 violation by some reasonable means, this is the first time you have
   448 received notice of violation of this License (for any work) from that
   449 copyright holder, and you cure the violation prior to 30 days after
   450 your receipt of the notice.
   451 
   452 Termination of your rights under this section does not terminate the
   453 licenses of parties who have received copies or rights from you under
   454 this License.  If your rights have been terminated and not permanently
   455 reinstated, you do not qualify to receive new licenses for the same
   456 material under section 10.
   457 
   458 \item Acceptance Not Required for Having Copies.
   459 
   460 You are not required to accept this License in order to receive or
   461 run a copy of the Program.  Ancillary propagation of a covered work
   462 occurring solely as a consequence of using peer-to-peer transmission
   463 to receive a copy likewise does not require acceptance.  However,
   464 nothing other than this License grants you permission to propagate or
   465 modify any covered work.  These actions infringe copyright if you do
   466 not accept this License.  Therefore, by modifying or propagating a
   467 covered work, you indicate your acceptance of this License to do so.
   468 
   469 \item Automatic Licensing of Downstream Recipients.
   470 
   471 Each time you convey a covered work, the recipient automatically
   472 receives a license from the original licensors, to run, modify and
   473 propagate that work, subject to this License.  You are not responsible
   474 for enforcing compliance by third parties with this License.
   475 
   476 An ``entity transaction'' is a transaction transferring control of an
   477 organization, or substantially all assets of one, or subdividing an
   478 organization, or merging organizations.  If propagation of a covered
   479 work results from an entity transaction, each party to that
   480 transaction who receives a copy of the work also receives whatever
   481 licenses to the work the party's predecessor in interest had or could
   482 give under the previous paragraph, plus a right to possession of the
   483 Corresponding Source of the work from the predecessor in interest, if
   484 the predecessor has it or can get it with reasonable efforts.
   485 
   486 You may not impose any further restrictions on the exercise of the
   487 rights granted or affirmed under this License.  For example, you may
   488 not impose a license fee, royalty, or other charge for exercise of
   489 rights granted under this License, and you may not initiate litigation
   490 (including a cross-claim or counterclaim in a lawsuit) alleging that
   491 any patent claim is infringed by making, using, selling, offering for
   492 sale, or importing the Program or any portion of it.
   493 
   494 \item Patents.
   495 
   496 A ``contributor'' is a copyright holder who authorizes use under this
   497 License of the Program or a work on which the Program is based.  The
   498 work thus licensed is called the contributor's ``contributor version''.
   499 
   500 A contributor's ``essential patent claims'' are all patent claims
   501 owned or controlled by the contributor, whether already acquired or
   502 hereafter acquired, that would be infringed by some manner, permitted
   503 by this License, of making, using, or selling its contributor version,
   504 but do not include claims that would be infringed only as a
   505 consequence of further modification of the contributor version.  For
   506 purposes of this definition, ``control'' includes the right to grant
   507 patent sublicenses in a manner consistent with the requirements of
   508 this License.
   509 
   510 Each contributor grants you a non-exclusive, worldwide, royalty-free
   511 patent license under the contributor's essential patent claims, to
   512 make, use, sell, offer for sale, import and otherwise run, modify and
   513 propagate the contents of its contributor version.
   514 
   515 In the following three paragraphs, a ``patent license'' is any express
   516 agreement or commitment, however denominated, not to enforce a patent
   517 (such as an express permission to practice a patent or covenant not to
   518 sue for patent infringement).  To ``grant'' such a patent license to a
   519 party means to make such an agreement or commitment not to enforce a
   520 patent against the party.
   521 
   522 If you convey a covered work, knowingly relying on a patent license,
   523 and the Corresponding Source of the work is not available for anyone
   524 to copy, free of charge and under the terms of this License, through a
   525 publicly available network server or other readily accessible means,
   526 then you must either (1) cause the Corresponding Source to be so
   527 available, or (2) arrange to deprive yourself of the benefit of the
   528 patent license for this particular work, or (3) arrange, in a manner
   529 consistent with the requirements of this License, to extend the patent
   530 license to downstream recipients.  ``Knowingly relying'' means you have
   531 actual knowledge that, but for the patent license, your conveying the
   532 covered work in a country, or your recipient's use of the covered work
   533 in a country, would infringe one or more identifiable patents in that
   534 country that you have reason to believe are valid.
   535 
   536 If, pursuant to or in connection with a single transaction or
   537 arrangement, you convey, or propagate by procuring conveyance of, a
   538 covered work, and grant a patent license to some of the parties
   539 receiving the covered work authorizing them to use, propagate, modify
   540 or convey a specific copy of the covered work, then the patent license
   541 you grant is automatically extended to all recipients of the covered
   542 work and works based on it.
   543 
   544 A patent license is ``discriminatory'' if it does not include within
   545 the scope of its coverage, prohibits the exercise of, or is
   546 conditioned on the non-exercise of one or more of the rights that are
   547 specifically granted under this License.  You may not convey a covered
   548 work if you are a party to an arrangement with a third party that is
   549 in the business of distributing software, under which you make payment
   550 to the third party based on the extent of your activity of conveying
   551 the work, and under which the third party grants, to any of the
   552 parties who would receive the covered work from you, a discriminatory
   553 patent license (a) in connection with copies of the covered work
   554 conveyed by you (or copies made from those copies), or (b) primarily
   555 for and in connection with specific products or compilations that
   556 contain the covered work, unless you entered into that arrangement,
   557 or that patent license was granted, prior to 28 March 2007.
   558 
   559 Nothing in this License shall be construed as excluding or limiting
   560 any implied license or other defenses to infringement that may
   561 otherwise be available to you under applicable patent law.
   562 
   563 \item No Surrender of Others' Freedom.
   564 
   565 If conditions are imposed on you (whether by court order, agreement or
   566 otherwise) that contradict the conditions of this License, they do not
   567 excuse you from the conditions of this License.  If you cannot convey a
   568 covered work so as to satisfy simultaneously your obligations under this
   569 License and any other pertinent obligations, then as a consequence you may
   570 not convey it at all.  For example, if you agree to terms that obligate you
   571 to collect a royalty for further conveying from those to whom you convey
   572 the Program, the only way you could satisfy both those terms and this
   573 License would be to refrain entirely from conveying the Program.
   574 
   575 \item Use with the GNU Affero General Public License.
   576 
   577 Notwithstanding any other provision of this License, you have
   578 permission to link or combine any covered work with a work licensed
   579 under version 3 of the GNU Affero General Public License into a single
   580 combined work, and to convey the resulting work.  The terms of this
   581 License will continue to apply to the part which is the covered work,
   582 but the special requirements of the GNU Affero General Public License,
   583 section 13, concerning interaction through a network will apply to the
   584 combination as such.
   585 
   586 \item Revised Versions of this License.
   587 
   588 The Free Software Foundation may publish revised and/or new versions of
   589 the GNU General Public License from time to time.  Such new versions will
   590 be similar in spirit to the present version, but may differ in detail to
   591 address new problems or concerns.
   592 
   593 Each version is given a distinguishing version number.  If the
   594 Program specifies that a certain numbered version of the GNU General
   595 Public License ``or any later version'' applies to it, you have the
   596 option of following the terms and conditions either of that numbered
   597 version or of any later version published by the Free Software
   598 Foundation.  If the Program does not specify a version number of the
   599 GNU General Public License, you may choose any version ever published
   600 by the Free Software Foundation.
   601 
   602 If the Program specifies that a proxy can decide which future
   603 versions of the GNU General Public License can be used, that proxy's
   604 public statement of acceptance of a version permanently authorizes you
   605 to choose that version for the Program.
   606 
   607 Later license versions may give you additional or different
   608 permissions.  However, no additional obligations are imposed on any
   609 author or copyright holder as a result of your choosing to follow a
   610 later version.
   611 
   612 \item Disclaimer of Warranty.
   613 
   614 \begin{sloppypar}
   615  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
   616  APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE
   617  COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM ``AS IS''
   618  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
   619  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
   620  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE
   621  RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.
   622  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
   623  NECESSARY SERVICING, REPAIR OR CORRECTION.
   624 \end{sloppypar}
   625 
   626 \item Limitation of Liability.
   627 
   628  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
   629  WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES
   630  AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR
   631  DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL
   632  DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM
   633  (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
   634  INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE
   635  OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH
   636  HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
   637  DAMAGES.
   638 
   639 \item Interpretation of Sections 15 and 16.
   640 
   641 If the disclaimer of warranty and limitation of liability provided
   642 above cannot be given local legal effect according to their terms,
   643 reviewing courts shall apply local law that most closely approximates
   644 an absolute waiver of all civil liability in connection with the
   645 Program, unless a warranty or assumption of liability accompanies a
   646 copy of the Program in return for a fee.
   647 
   648 \begin{center}
   649 {\Large\sc End of Terms and Conditions}
   650 
   651 \bigskip
   652 How to Apply These Terms to Your New Programs
   653 \end{center}
   654 
   655 If you develop a new program, and you want it to be of the greatest
   656 possible use to the public, the best way to achieve this is to make it
   657 free software which everyone can redistribute and change under these terms.
   658 
   659 To do so, attach the following notices to the program.  It is safest
   660 to attach them to the start of each source file to most effectively
   661 state the exclusion of warranty; and each file should have at least
   662 the ``copyright'' line and a pointer to where the full notice is found.
   663 
   664 {\footnotesize
   665 \begin{verbatim}
   666 <one line to give the program's name and a brief idea of what it does.>
   667 
   668 Copyright (C) <textyear>  <name of author>
   669 
   670 This program is free software: you can redistribute it and/or modify
   671 it under the terms of the GNU General Public License as published by
   672 the Free Software Foundation, either version 3 of the License, or
   673 (at your option) any later version.
   674 
   675 This program is distributed in the hope that it will be useful,
   676 but WITHOUT ANY WARRANTY; without even the implied warranty of
   677 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   678 GNU General Public License for more details.
   679 
   680 You should have received a copy of the GNU General Public License
   681 along with this program.  If not, see <http://www.gnu.org/licenses/>.
   682 \end{verbatim}
   683 }
   684 
   685 Also add information on how to contact you by electronic and paper mail.
   686 
   687 If the program does terminal interaction, make it output a short
   688 notice like this when it starts in an interactive mode:
   689 
   690 {\footnotesize
   691 \begin{verbatim}
   692 <program>  Copyright (C) <year>  <name of author>
   693 
   694 This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
   695 This is free software, and you are welcome to redistribute it
   696 under certain conditions; type `show c' for details.
   697 \end{verbatim}
   698 }
   699 
   700 The hypothetical commands {\tt show w} and {\tt show c} should show
   701 the appropriate
   702 parts of the General Public License.  Of course, your program's commands
   703 might be different; for a GUI interface, you would use an ``about box''.
   704 
   705 You should also get your employer (if you work as a programmer) or
   706 school, if any, to sign a ``copyright disclaimer'' for the program, if
   707 necessary.  For more information on this, and how to apply and follow
   708 the GNU GPL, see \texttt{http://www.gnu.org/licenses/}.
   709 
   710 The GNU General Public License does not permit incorporating your
   711 program into proprietary programs.  If your program is a subroutine
   712 library, you may consider it more useful to permit linking proprietary
   713 applications with the library.  If this is what you want to do, use
   714 the GNU Lesser General Public License instead of this License.  But
   715 first, please read \texttt{http://www.gnu.org/philosophy/why-not-lgpl.html}.
   716 
   717 \end{enumerate}
   718 
   719 \end{document}