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     1                       GNU GENERAL PUBLIC LICENSE
       
     2                        Version 3, 29 June 2007
       
     3 
       
     4  Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
       
     5  Everyone is permitted to copy and distribute verbatim copies
       
     6  of this license document, but changing it is not allowed.
       
     7 
       
     8                             Preamble
       
     9 
       
    10   The GNU General Public License is a free, copyleft license for
       
    11 software and other kinds of works.
       
    12 
       
    13   The licenses for most software and other practical works are designed
       
    14 to take away your freedom to share and change the works.  By contrast,
       
    15 the GNU General Public License is intended to guarantee your freedom to
       
    16 share and change all versions of a program--to make sure it remains free
       
    17 software for all its users.  We, the Free Software Foundation, use the
       
    18 GNU General Public License for most of our software; it applies also to
       
    19 any other work released this way by its authors.  You can apply it to
       
    20 your programs, too.
       
    21 
       
    22   When we speak of free software, we are referring to freedom, not
       
    23 price.  Our General Public Licenses are designed to make sure that you
       
    24 have the freedom to distribute copies of free software (and charge for
       
    25 them if you wish), that you receive source code or can get it if you
       
    26 want it, that you can change the software or use pieces of it in new
       
    27 free programs, and that you know you can do these things.
       
    28 
       
    29   To protect your rights, we need to prevent others from denying you
       
    30 these rights or asking you to surrender the rights.  Therefore, you have
       
    31 certain responsibilities if you distribute copies of the software, or if
       
    32 you modify it: responsibilities to respect the freedom of others.
       
    33 
       
    34   For example, if you distribute copies of such a program, whether
       
    35 gratis or for a fee, you must pass on to the recipients the same
       
    36 freedoms that you received.  You must make sure that they, too, receive
       
    37 or can get the source code.  And you must show them these terms so they
       
    38 know their rights.
       
    39 
       
    40   Developers that use the GNU GPL protect your rights with two steps:
       
    41 (1) assert copyright on the software, and (2) offer you this License
       
    42 giving you legal permission to copy, distribute and/or modify it.
       
    43 
       
    44   For the developers' and authors' protection, the GPL clearly explains
       
    45 that there is no warranty for this free software.  For both users' and
       
    46 authors' sake, the GPL requires that modified versions be marked as
       
    47 changed, so that their problems will not be attributed erroneously to
       
    48 authors of previous versions.
       
    49 
       
    50   Some devices are designed to deny users access to install or run
       
    51 modified versions of the software inside them, although the manufacturer
       
    52 can do so.  This is fundamentally incompatible with the aim of
       
    53 protecting users' freedom to change the software.  The systematic
       
    54 pattern of such abuse occurs in the area of products for individuals to
       
    55 use, which is precisely where it is most unacceptable.  Therefore, we
       
    56 have designed this version of the GPL to prohibit the practice for those
       
    57 products.  If such problems arise substantially in other domains, we
       
    58 stand ready to extend this provision to those domains in future versions
       
    59 of the GPL, as needed to protect the freedom of users.
       
    60 
       
    61   Finally, every program is threatened constantly by software patents.
       
    62 States should not allow patents to restrict development and use of
       
    63 software on general-purpose computers, but in those that do, we wish to
       
    64 avoid the special danger that patents applied to a free program could
       
    65 make it effectively proprietary.  To prevent this, the GPL assures that
       
    66 patents cannot be used to render the program non-free.
       
    67 
       
    68   The precise terms and conditions for copying, distribution and
       
    69 modification follow.
       
    70 
       
    71                        TERMS AND CONDITIONS
       
    72 
       
    73   0. Definitions.
       
    74 
       
    75   "This License" refers to version 3 of the GNU General Public License.
       
    76 
       
    77   "Copyright" also means copyright-like laws that apply to other kinds of
       
    78 works, such as semiconductor masks.
       
    79 
       
    80   "The Program" refers to any copyrightable work licensed under this
       
    81 License.  Each licensee is addressed as "you".  "Licensees" and
       
    82 "recipients" may be individuals or organizations.
       
    83 
       
    84   To "modify" a work means to copy from or adapt all or part of the work
       
    85 in a fashion requiring copyright permission, other than the making of an
       
    86 exact copy.  The resulting work is called a "modified version" of the
       
    87 earlier work or a work "based on" the earlier work.
       
    88 
       
    89   A "covered work" means either the unmodified Program or a work based
       
    90 on the Program.
       
    91 
       
    92   To "propagate" a work means to do anything with it that, without
       
    93 permission, would make you directly or secondarily liable for
       
    94 infringement under applicable copyright law, except executing it on a
       
    95 computer or modifying a private copy.  Propagation includes copying,
       
    96 distribution (with or without modification), making available to the
       
    97 public, and in some countries other activities as well.
       
    98 
       
    99   To "convey" a work means any kind of propagation that enables other
       
   100 parties to make or receive copies.  Mere interaction with a user through
       
   101 a computer network, with no transfer of a copy, is not conveying.
       
   102 
       
   103   An interactive user interface displays "Appropriate Legal Notices"
       
   104 to the extent that it includes a convenient and prominently visible
       
   105 feature that (1) displays an appropriate copyright notice, and (2)
       
   106 tells the user that there is no warranty for the work (except to the
       
   107 extent that warranties are provided), that licensees may convey the
       
   108 work under this License, and how to view a copy of this License.  If
       
   109 the interface presents a list of user commands or options, such as a
       
   110 menu, a prominent item in the list meets this criterion.
       
   111 
       
   112   1. Source Code.
       
   113 
       
   114   The "source code" for a work means the preferred form of the work
       
   115 for making modifications to it.  "Object code" means any non-source
       
   116 form of a work.
       
   117 
       
   118   A "Standard Interface" means an interface that either is an official
       
   119 standard defined by a recognized standards body, or, in the case of
       
   120 interfaces specified for a particular programming language, one that
       
   121 is widely used among developers working in that language.
       
   122 
       
   123   The "System Libraries" of an executable work include anything, other
       
   124 than the work as a whole, that (a) is included in the normal form of
       
   125 packaging a Major Component, but which is not part of that Major
       
   126 Component, and (b) serves only to enable use of the work with that
       
   127 Major Component, or to implement a Standard Interface for which an
       
   128 implementation is available to the public in source code form.  A
       
   129 "Major Component", in this context, means a major essential component
       
   130 (kernel, window system, and so on) of the specific operating system
       
   131 (if any) on which the executable work runs, or a compiler used to
       
   132 produce the work, or an object code interpreter used to run it.
       
   133 
       
   134   The "Corresponding Source" for a work in object code form means all
       
   135 the source code needed to generate, install, and (for an executable
       
   136 work) run the object code and to modify the work, including scripts to
       
   137 control those activities.  However, it does not include the work's
       
   138 System Libraries, or general-purpose tools or generally available free
       
   139 programs which are used unmodified in performing those activities but
       
   140 which are not part of the work.  For example, Corresponding Source
       
   141 includes interface definition files associated with source files for
       
   142 the work, and the source code for shared libraries and dynamically
       
   143 linked subprograms that the work is specifically designed to require,
       
   144 such as by intimate data communication or control flow between those
       
   145 subprograms and other parts of the work.
       
   146 
       
   147   The Corresponding Source need not include anything that users
       
   148 can regenerate automatically from other parts of the Corresponding
       
   149 Source.
       
   150 
       
   151   The Corresponding Source for a work in source code form is that
       
   152 same work.
       
   153 
       
   154   2. Basic Permissions.
       
   155 
       
   156   All rights granted under this License are granted for the term of
       
   157 copyright on the Program, and are irrevocable provided the stated
       
   158 conditions are met.  This License explicitly affirms your unlimited
       
   159 permission to run the unmodified Program.  The output from running a
       
   160 covered work is covered by this License only if the output, given its
       
   161 content, constitutes a covered work.  This License acknowledges your
       
   162 rights of fair use or other equivalent, as provided by copyright law.
       
   163 
       
   164   You may make, run and propagate covered works that you do not
       
   165 convey, without conditions so long as your license otherwise remains
       
   166 in force.  You may convey covered works to others for the sole purpose
       
   167 of having them make modifications exclusively for you, or provide you
       
   168 with facilities for running those works, provided that you comply with
       
   169 the terms of this License in conveying all material for which you do
       
   170 not control copyright.  Those thus making or running the covered works
       
   171 for you must do so exclusively on your behalf, under your direction
       
   172 and control, on terms that prohibit them from making any copies of
       
   173 your copyrighted material outside their relationship with you.
       
   174 
       
   175   Conveying under any other circumstances is permitted solely under
       
   176 the conditions stated below.  Sublicensing is not allowed; section 10
       
   177 makes it unnecessary.
       
   178 
       
   179   3. Protecting Users' Legal Rights From Anti-Circumvention Law.
       
   180 
       
   181   No covered work shall be deemed part of an effective technological
       
   182 measure under any applicable law fulfilling obligations under article
       
   183 11 of the WIPO copyright treaty adopted on 20 December 1996, or
       
   184 similar laws prohibiting or restricting circumvention of such
       
   185 measures.
       
   186 
       
   187   When you convey a covered work, you waive any legal power to forbid
       
   188 circumvention of technological measures to the extent such circumvention
       
   189 is effected by exercising rights under this License with respect to
       
   190 the covered work, and you disclaim any intention to limit operation or
       
   191 modification of the work as a means of enforcing, against the work's
       
   192 users, your or third parties' legal rights to forbid circumvention of
       
   193 technological measures.
       
   194 
       
   195   4. Conveying Verbatim Copies.
       
   196 
       
   197   You may convey verbatim copies of the Program's source code as you
       
   198 receive it, in any medium, provided that you conspicuously and
       
   199 appropriately publish on each copy an appropriate copyright notice;
       
   200 keep intact all notices stating that this License and any
       
   201 non-permissive terms added in accord with section 7 apply to the code;
       
   202 keep intact all notices of the absence of any warranty; and give all
       
   203 recipients a copy of this License along with the Program.
       
   204 
       
   205   You may charge any price or no price for each copy that you convey,
       
   206 and you may offer support or warranty protection for a fee.
       
   207 
       
   208   5. Conveying Modified Source Versions.
       
   209 
       
   210   You may convey a work based on the Program, or the modifications to
       
   211 produce it from the Program, in the form of source code under the
       
   212 terms of section 4, provided that you also meet all of these conditions:
       
   213 
       
   214     a) The work must carry prominent notices stating that you modified
       
   215     it, and giving a relevant date.
       
   216 
       
   217     b) The work must carry prominent notices stating that it is
       
   218     released under this License and any conditions added under section
       
   219     7.  This requirement modifies the requirement in section 4 to
       
   220     "keep intact all notices".
       
   221 
       
   222     c) You must license the entire work, as a whole, under this
       
   223     License to anyone who comes into possession of a copy.  This
       
   224     License will therefore apply, along with any applicable section 7
       
   225     additional terms, to the whole of the work, and all its parts,
       
   226     regardless of how they are packaged.  This License gives no
       
   227     permission to license the work in any other way, but it does not
       
   228     invalidate such permission if you have separately received it.
       
   229 
       
   230     d) If the work has interactive user interfaces, each must display
       
   231     Appropriate Legal Notices; however, if the Program has interactive
       
   232     interfaces that do not display Appropriate Legal Notices, your
       
   233     work need not make them do so.
       
   234 
       
   235   A compilation of a covered work with other separate and independent
       
   236 works, which are not by their nature extensions of the covered work,
       
   237 and which are not combined with it such as to form a larger program,
       
   238 in or on a volume of a storage or distribution medium, is called an
       
   239 "aggregate" if the compilation and its resulting copyright are not
       
   240 used to limit the access or legal rights of the compilation's users
       
   241 beyond what the individual works permit.  Inclusion of a covered work
       
   242 in an aggregate does not cause this License to apply to the other
       
   243 parts of the aggregate.
       
   244 
       
   245   6. Conveying Non-Source Forms.
       
   246 
       
   247   You may convey a covered work in object code form under the terms
       
   248 of sections 4 and 5, provided that you also convey the
       
   249 machine-readable Corresponding Source under the terms of this License,
       
   250 in one of these ways:
       
   251 
       
   252     a) Convey the object code in, or embodied in, a physical product
       
   253     (including a physical distribution medium), accompanied by the
       
   254     Corresponding Source fixed on a durable physical medium
       
   255     customarily used for software interchange.
       
   256 
       
   257     b) Convey the object code in, or embodied in, a physical product
       
   258     (including a physical distribution medium), accompanied by a
       
   259     written offer, valid for at least three years and valid for as
       
   260     long as you offer spare parts or customer support for that product
       
   261     model, to give anyone who possesses the object code either (1) a
       
   262     copy of the Corresponding Source for all the software in the
       
   263     product that is covered by this License, on a durable physical
       
   264     medium customarily used for software interchange, for a price no
       
   265     more than your reasonable cost of physically performing this
       
   266     conveying of source, or (2) access to copy the
       
   267     Corresponding Source from a network server at no charge.
       
   268 
       
   269     c) Convey individual copies of the object code with a copy of the
       
   270     written offer to provide the Corresponding Source.  This
       
   271     alternative is allowed only occasionally and noncommercially, and
       
   272     only if you received the object code with such an offer, in accord
       
   273     with subsection 6b.
       
   274 
       
   275     d) Convey the object code by offering access from a designated
       
   276     place (gratis or for a charge), and offer equivalent access to the
       
   277     Corresponding Source in the same way through the same place at no
       
   278     further charge.  You need not require recipients to copy the
       
   279     Corresponding Source along with the object code.  If the place to
       
   280     copy the object code is a network server, the Corresponding Source
       
   281     may be on a different server (operated by you or a third party)
       
   282     that supports equivalent copying facilities, provided you maintain
       
   283     clear directions next to the object code saying where to find the
       
   284     Corresponding Source.  Regardless of what server hosts the
       
   285     Corresponding Source, you remain obligated to ensure that it is
       
   286     available for as long as needed to satisfy these requirements.
       
   287 
       
   288     e) Convey the object code using peer-to-peer transmission, provided
       
   289     you inform other peers where the object code and Corresponding
       
   290     Source of the work are being offered to the general public at no
       
   291     charge under subsection 6d.
       
   292 
       
   293   A separable portion of the object code, whose source code is excluded
       
   294 from the Corresponding Source as a System Library, need not be
       
   295 included in conveying the object code work.
       
   296 
       
   297   A "User Product" is either (1) a "consumer product", which means any
       
   298 tangible personal property which is normally used for personal, family,
       
   299 or household purposes, or (2) anything designed or sold for incorporation
       
   300 into a dwelling.  In determining whether a product is a consumer product,
       
   301 doubtful cases shall be resolved in favor of coverage.  For a particular
       
   302 product received by a particular user, "normally used" refers to a
       
   303 typical or common use of that class of product, regardless of the status
       
   304 of the particular user or of the way in which the particular user
       
   305 actually uses, or expects or is expected to use, the product.  A product
       
   306 is a consumer product regardless of whether the product has substantial
       
   307 commercial, industrial or non-consumer uses, unless such uses represent
       
   308 the only significant mode of use of the product.
       
   309 
       
   310   "Installation Information" for a User Product means any methods,
       
   311 procedures, authorization keys, or other information required to install
       
   312 and execute modified versions of a covered work in that User Product from
       
   313 a modified version of its Corresponding Source.  The information must
       
   314 suffice to ensure that the continued functioning of the modified object
       
   315 code is in no case prevented or interfered with solely because
       
   316 modification has been made.
       
   317 
       
   318   If you convey an object code work under this section in, or with, or
       
   319 specifically for use in, a User Product, and the conveying occurs as
       
   320 part of a transaction in which the right of possession and use of the
       
   321 User Product is transferred to the recipient in perpetuity or for a
       
   322 fixed term (regardless of how the transaction is characterized), the
       
   323 Corresponding Source conveyed under this section must be accompanied
       
   324 by the Installation Information.  But this requirement does not apply
       
   325 if neither you nor any third party retains the ability to install
       
   326 modified object code on the User Product (for example, the work has
       
   327 been installed in ROM).
       
   328 
       
   329   The requirement to provide Installation Information does not include a
       
   330 requirement to continue to provide support service, warranty, or updates
       
   331 for a work that has been modified or installed by the recipient, or for
       
   332 the User Product in which it has been modified or installed.  Access to a
       
   333 network may be denied when the modification itself materially and
       
   334 adversely affects the operation of the network or violates the rules and
       
   335 protocols for communication across the network.
       
   336 
       
   337   Corresponding Source conveyed, and Installation Information provided,
       
   338 in accord with this section must be in a format that is publicly
       
   339 documented (and with an implementation available to the public in
       
   340 source code form), and must require no special password or key for
       
   341 unpacking, reading or copying.
       
   342 
       
   343   7. Additional Terms.
       
   344 
       
   345   "Additional permissions" are terms that supplement the terms of this
       
   346 License by making exceptions from one or more of its conditions.
       
   347 Additional permissions that are applicable to the entire Program shall
       
   348 be treated as though they were included in this License, to the extent
       
   349 that they are valid under applicable law.  If additional permissions
       
   350 apply only to part of the Program, that part may be used separately
       
   351 under those permissions, but the entire Program remains governed by
       
   352 this License without regard to the additional permissions.
       
   353 
       
   354   When you convey a copy of a covered work, you may at your option
       
   355 remove any additional permissions from that copy, or from any part of
       
   356 it.  (Additional permissions may be written to require their own
       
   357 removal in certain cases when you modify the work.)  You may place
       
   358 additional permissions on material, added by you to a covered work,
       
   359 for which you have or can give appropriate copyright permission.
       
   360 
       
   361   Notwithstanding any other provision of this License, for material you
       
   362 add to a covered work, you may (if authorized by the copyright holders of
       
   363 that material) supplement the terms of this License with terms:
       
   364 
       
   365     a) Disclaiming warranty or limiting liability differently from the
       
   366     terms of sections 15 and 16 of this License; or
       
   367 
       
   368     b) Requiring preservation of specified reasonable legal notices or
       
   369     author attributions in that material or in the Appropriate Legal
       
   370     Notices displayed by works containing it; or
       
   371 
       
   372     c) Prohibiting misrepresentation of the origin of that material, or
       
   373     requiring that modified versions of such material be marked in
       
   374     reasonable ways as different from the original version; or
       
   375 
       
   376     d) Limiting the use for publicity purposes of names of licensors or
       
   377     authors of the material; or
       
   378 
       
   379     e) Declining to grant rights under trademark law for use of some
       
   380     trade names, trademarks, or service marks; or
       
   381 
       
   382     f) Requiring indemnification of licensors and authors of that
       
   383     material by anyone who conveys the material (or modified versions of
       
   384     it) with contractual assumptions of liability to the recipient, for
       
   385     any liability that these contractual assumptions directly impose on
       
   386     those licensors and authors.
       
   387 
       
   388   All other non-permissive additional terms are considered "further
       
   389 restrictions" within the meaning of section 10.  If the Program as you
       
   390 received it, or any part of it, contains a notice stating that it is
       
   391 governed by this License along with a term that is a further
       
   392 restriction, you may remove that term.  If a license document contains
       
   393 a further restriction but permits relicensing or conveying under this
       
   394 License, you may add to a covered work material governed by the terms
       
   395 of that license document, provided that the further restriction does
       
   396 not survive such relicensing or conveying.
       
   397 
       
   398   If you add terms to a covered work in accord with this section, you
       
   399 must place, in the relevant source files, a statement of the
       
   400 additional terms that apply to those files, or a notice indicating
       
   401 where to find the applicable terms.
       
   402 
       
   403   Additional terms, permissive or non-permissive, may be stated in the
       
   404 form of a separately written license, or stated as exceptions;
       
   405 the above requirements apply either way.
       
   406 
       
   407   8. Termination.
       
   408 
       
   409   You may not propagate or modify a covered work except as expressly
       
   410 provided under this License.  Any attempt otherwise to propagate or
       
   411 modify it is void, and will automatically terminate your rights under
       
   412 this License (including any patent licenses granted under the third
       
   413 paragraph of section 11).
       
   414 
       
   415   However, if you cease all violation of this License, then your
       
   416 license from a particular copyright holder is reinstated (a)
       
   417 provisionally, unless and until the copyright holder explicitly and
       
   418 finally terminates your license, and (b) permanently, if the copyright
       
   419 holder fails to notify you of the violation by some reasonable means
       
   420 prior to 60 days after the cessation.
       
   421 
       
   422   Moreover, your license from a particular copyright holder is
       
   423 reinstated permanently if the copyright holder notifies you of the
       
   424 violation by some reasonable means, this is the first time you have
       
   425 received notice of violation of this License (for any work) from that
       
   426 copyright holder, and you cure the violation prior to 30 days after
       
   427 your receipt of the notice.
       
   428 
       
   429   Termination of your rights under this section does not terminate the
       
   430 licenses of parties who have received copies or rights from you under
       
   431 this License.  If your rights have been terminated and not permanently
       
   432 reinstated, you do not qualify to receive new licenses for the same
       
   433 material under section 10.
       
   434 
       
   435   9. Acceptance Not Required for Having Copies.
       
   436 
       
   437   You are not required to accept this License in order to receive or
       
   438 run a copy of the Program.  Ancillary propagation of a covered work
       
   439 occurring solely as a consequence of using peer-to-peer transmission
       
   440 to receive a copy likewise does not require acceptance.  However,
       
   441 nothing other than this License grants you permission to propagate or
       
   442 modify any covered work.  These actions infringe copyright if you do
       
   443 not accept this License.  Therefore, by modifying or propagating a
       
   444 covered work, you indicate your acceptance of this License to do so.
       
   445 
       
   446   10. Automatic Licensing of Downstream Recipients.
       
   447 
       
   448   Each time you convey a covered work, the recipient automatically
       
   449 receives a license from the original licensors, to run, modify and
       
   450 propagate that work, subject to this License.  You are not responsible
       
   451 for enforcing compliance by third parties with this License.
       
   452 
       
   453   An "entity transaction" is a transaction transferring control of an
       
   454 organization, or substantially all assets of one, or subdividing an
       
   455 organization, or merging organizations.  If propagation of a covered
       
   456 work results from an entity transaction, each party to that
       
   457 transaction who receives a copy of the work also receives whatever
       
   458 licenses to the work the party's predecessor in interest had or could
       
   459 give under the previous paragraph, plus a right to possession of the
       
   460 Corresponding Source of the work from the predecessor in interest, if
       
   461 the predecessor has it or can get it with reasonable efforts.
       
   462 
       
   463   You may not impose any further restrictions on the exercise of the
       
   464 rights granted or affirmed under this License.  For example, you may
       
   465 not impose a license fee, royalty, or other charge for exercise of
       
   466 rights granted under this License, and you may not initiate litigation
       
   467 (including a cross-claim or counterclaim in a lawsuit) alleging that
       
   468 any patent claim is infringed by making, using, selling, offering for
       
   469 sale, or importing the Program or any portion of it.
       
   470 
       
   471   11. Patents.
       
   472 
       
   473   A "contributor" is a copyright holder who authorizes use under this
       
   474 License of the Program or a work on which the Program is based.  The
       
   475 work thus licensed is called the contributor's "contributor version".
       
   476 
       
   477   A contributor's "essential patent claims" are all patent claims
       
   478 owned or controlled by the contributor, whether already acquired or
       
   479 hereafter acquired, that would be infringed by some manner, permitted
       
   480 by this License, of making, using, or selling its contributor version,
       
   481 but do not include claims that would be infringed only as a
       
   482 consequence of further modification of the contributor version.  For
       
   483 purposes of this definition, "control" includes the right to grant
       
   484 patent sublicenses in a manner consistent with the requirements of
       
   485 this License.
       
   486 
       
   487   Each contributor grants you a non-exclusive, worldwide, royalty-free
       
   488 patent license under the contributor's essential patent claims, to
       
   489 make, use, sell, offer for sale, import and otherwise run, modify and
       
   490 propagate the contents of its contributor version.
       
   491 
       
   492   In the following three paragraphs, a "patent license" is any express
       
   493 agreement or commitment, however denominated, not to enforce a patent
       
   494 (such as an express permission to practice a patent or covenant not to
       
   495 sue for patent infringement).  To "grant" such a patent license to a
       
   496 party means to make such an agreement or commitment not to enforce a
       
   497 patent against the party.
       
   498 
       
   499   If you convey a covered work, knowingly relying on a patent license,
       
   500 and the Corresponding Source of the work is not available for anyone
       
   501 to copy, free of charge and under the terms of this License, through a
       
   502 publicly available network server or other readily accessible means,
       
   503 then you must either (1) cause the Corresponding Source to be so
       
   504 available, or (2) arrange to deprive yourself of the benefit of the
       
   505 patent license for this particular work, or (3) arrange, in a manner
       
   506 consistent with the requirements of this License, to extend the patent
       
   507 license to downstream recipients.  "Knowingly relying" means you have
       
   508 actual knowledge that, but for the patent license, your conveying the
       
   509 covered work in a country, or your recipient's use of the covered work
       
   510 in a country, would infringe one or more identifiable patents in that
       
   511 country that you have reason to believe are valid.
       
   512 
       
   513   If, pursuant to or in connection with a single transaction or
       
   514 arrangement, you convey, or propagate by procuring conveyance of, a
       
   515 covered work, and grant a patent license to some of the parties
       
   516 receiving the covered work authorizing them to use, propagate, modify
       
   517 or convey a specific copy of the covered work, then the patent license
       
   518 you grant is automatically extended to all recipients of the covered
       
   519 work and works based on it.
       
   520 
       
   521   A patent license is "discriminatory" if it does not include within
       
   522 the scope of its coverage, prohibits the exercise of, or is
       
   523 conditioned on the non-exercise of one or more of the rights that are
       
   524 specifically granted under this License.  You may not convey a covered
       
   525 work if you are a party to an arrangement with a third party that is
       
   526 in the business of distributing software, under which you make payment
       
   527 to the third party based on the extent of your activity of conveying
       
   528 the work, and under which the third party grants, to any of the
       
   529 parties who would receive the covered work from you, a discriminatory
       
   530 patent license (a) in connection with copies of the covered work
       
   531 conveyed by you (or copies made from those copies), or (b) primarily
       
   532 for and in connection with specific products or compilations that
       
   533 contain the covered work, unless you entered into that arrangement,
       
   534 or that patent license was granted, prior to 28 March 2007.
       
   535 
       
   536   Nothing in this License shall be construed as excluding or limiting
       
   537 any implied license or other defenses to infringement that may
       
   538 otherwise be available to you under applicable patent law.
       
   539 
       
   540   12. No Surrender of Others' Freedom.
       
   541 
       
   542   If conditions are imposed on you (whether by court order, agreement or
       
   543 otherwise) that contradict the conditions of this License, they do not
       
   544 excuse you from the conditions of this License.  If you cannot convey a
       
   545 covered work so as to satisfy simultaneously your obligations under this
       
   546 License and any other pertinent obligations, then as a consequence you may
       
   547 not convey it at all.  For example, if you agree to terms that obligate you
       
   548 to collect a royalty for further conveying from those to whom you convey
       
   549 the Program, the only way you could satisfy both those terms and this
       
   550 License would be to refrain entirely from conveying the Program.
       
   551 
       
   552   13. Use with the GNU Affero General Public License.
       
   553 
       
   554   Notwithstanding any other provision of this License, you have
       
   555 permission to link or combine any covered work with a work licensed
       
   556 under version 3 of the GNU Affero General Public License into a single
       
   557 combined work, and to convey the resulting work.  The terms of this
       
   558 License will continue to apply to the part which is the covered work,
       
   559 but the special requirements of the GNU Affero General Public License,
       
   560 section 13, concerning interaction through a network will apply to the
       
   561 combination as such.
       
   562 
       
   563   14. Revised Versions of this License.
       
   564 
       
   565   The Free Software Foundation may publish revised and/or new versions of
       
   566 the GNU General Public License from time to time.  Such new versions will
       
   567 be similar in spirit to the present version, but may differ in detail to
       
   568 address new problems or concerns.
       
   569 
       
   570   Each version is given a distinguishing version number.  If the
       
   571 Program specifies that a certain numbered version of the GNU General
       
   572 Public License "or any later version" applies to it, you have the
       
   573 option of following the terms and conditions either of that numbered
       
   574 version or of any later version published by the Free Software
       
   575 Foundation.  If the Program does not specify a version number of the
       
   576 GNU General Public License, you may choose any version ever published
       
   577 by the Free Software Foundation.
       
   578 
       
   579   If the Program specifies that a proxy can decide which future
       
   580 versions of the GNU General Public License can be used, that proxy's
       
   581 public statement of acceptance of a version permanently authorizes you
       
   582 to choose that version for the Program.
       
   583 
       
   584   Later license versions may give you additional or different
       
   585 permissions.  However, no additional obligations are imposed on any
       
   586 author or copyright holder as a result of your choosing to follow a
       
   587 later version.
       
   588 
       
   589   15. Disclaimer of Warranty.
       
   590 
       
   591   THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
       
   592 APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
       
   593 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
       
   594 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
       
   595 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
       
   596 PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
       
   597 IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
       
   598 ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
       
   599 
       
   600   16. Limitation of Liability.
       
   601 
       
   602   IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
       
   603 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
       
   604 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
       
   605 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
       
   606 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
       
   607 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
       
   608 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
       
   609 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
       
   610 SUCH DAMAGES.
       
   611 
       
   612   17. Interpretation of Sections 15 and 16.
       
   613 
       
   614   If the disclaimer of warranty and limitation of liability provided
       
   615 above cannot be given local legal effect according to their terms,
       
   616 reviewing courts shall apply local law that most closely approximates
       
   617 an absolute waiver of all civil liability in connection with the
       
   618 Program, unless a warranty or assumption of liability accompanies a
       
   619 copy of the Program in return for a fee.
       
   620 
       
   621                      END OF TERMS AND CONDITIONS
       
   622 
       
   623             How to Apply These Terms to Your New Programs
       
   624 
       
   625   If you develop a new program, and you want it to be of the greatest
       
   626 possible use to the public, the best way to achieve this is to make it
       
   627 free software which everyone can redistribute and change under these terms.
       
   628 
       
   629   To do so, attach the following notices to the program.  It is safest
       
   630 to attach them to the start of each source file to most effectively
       
   631 state the exclusion of warranty; and each file should have at least
       
   632 the "copyright" line and a pointer to where the full notice is found.
       
   633 
       
   634     <one line to give the program's name and a brief idea of what it does.>
       
   635     Copyright (C) <year>  <name of author>
       
   636 
       
   637     This program is free software: you can redistribute it and/or modify
       
   638     it under the terms of the GNU General Public License as published by
       
   639     the Free Software Foundation, either version 3 of the License, or
       
   640     (at your option) any later version.
       
   641 
       
   642     This program is distributed in the hope that it will be useful,
       
   643     but WITHOUT ANY WARRANTY; without even the implied warranty of
       
   644     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
       
   645     GNU General Public License for more details.
       
   646 
       
   647     You should have received a copy of the GNU General Public License
       
   648     along with this program.  If not, see <http://www.gnu.org/licenses/>.
       
   649 
       
   650 Also add information on how to contact you by electronic and paper mail.
       
   651 
       
   652   If the program does terminal interaction, make it output a short
       
   653 notice like this when it starts in an interactive mode:
       
   654 
       
   655     <program>  Copyright (C) <year>  <name of author>
       
   656     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
       
   657     This is free software, and you are welcome to redistribute it
       
   658     under certain conditions; type `show c' for details.
       
   659 
       
   660 The hypothetical commands `show w' and `show c' should show the appropriate
       
   661 parts of the General Public License.  Of course, your program's commands
       
   662 might be different; for a GUI interface, you would use an "about box".
       
   663 
       
   664   You should also get your employer (if you work as a programmer) or school,
       
   665 if any, to sign a "copyright disclaimer" for the program, if necessary.
       
   666 For more information on this, and how to apply and follow the GNU GPL, see
       
   667 <http://www.gnu.org/licenses/>.
       
   668 
       
   669   The GNU General Public License does not permit incorporating your program
       
   670 into proprietary programs.  If your program is a subroutine library, you
       
   671 may consider it more useful to permit linking proprietary applications with
       
   672 the library.  If this is what you want to do, use the GNU Lesser General
       
   673 Public License instead of this License.  But first, please read
       
   674 <http://www.gnu.org/philosophy/why-not-lgpl.html>.
       
   675 
       
   676 Copy of GNU Free Documentation License, Version 1.3
       
   677 
       
   678                 GNU Free Documentation License
       
   679                  Version 1.3, 3 November 2008
       
   680 
       
   681 
       
   682  Copyright (C) 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
       
   683      <http://fsf.org/>
       
   684  Everyone is permitted to copy and distribute verbatim copies
       
   685  of this license document, but changing it is not allowed.
       
   686 
       
   687 0. PREAMBLE
       
   688 
       
   689 The purpose of this License is to make a manual, textbook, or other
       
   690 functional and useful document "free" in the sense of freedom: to
       
   691 assure everyone the effective freedom to copy and redistribute it,
       
   692 with or without modifying it, either commercially or noncommercially.
       
   693 Secondarily, this License preserves for the author and publisher a way
       
   694 to get credit for their work, while not being considered responsible
       
   695 for modifications made by others.
       
   696 
       
   697 This License is a kind of "copyleft", which means that derivative
       
   698 works of the document must themselves be free in the same sense.  It
       
   699 complements the GNU General Public License, which is a copyleft
       
   700 license designed for free software.
       
   701 
       
   702 We have designed this License in order to use it for manuals for free
       
   703 software, because free software needs free documentation: a free
       
   704 program should come with manuals providing the same freedoms that the
       
   705 software does.  But this License is not limited to software manuals;
       
   706 it can be used for any textual work, regardless of subject matter or
       
   707 whether it is published as a printed book.  We recommend this License
       
   708 principally for works whose purpose is instruction or reference.
       
   709 
       
   710 
       
   711 1. APPLICABILITY AND DEFINITIONS
       
   712 
       
   713 This License applies to any manual or other work, in any medium, that
       
   714 contains a notice placed by the copyright holder saying it can be
       
   715 distributed under the terms of this License.  Such a notice grants a
       
   716 world-wide, royalty-free license, unlimited in duration, to use that
       
   717 work under the conditions stated herein.  The "Document", below,
       
   718 refers to any such manual or work.  Any member of the public is a
       
   719 licensee, and is addressed as "you".  You accept the license if you
       
   720 copy, modify or distribute the work in a way requiring permission
       
   721 under copyright law.
       
   722 
       
   723 A "Modified Version" of the Document means any work containing the
       
   724 Document or a portion of it, either copied verbatim, or with
       
   725 modifications and/or translated into another language.
       
   726 
       
   727 A "Secondary Section" is a named appendix or a front-matter section of
       
   728 the Document that deals exclusively with the relationship of the
       
   729 publishers or authors of the Document to the Document's overall
       
   730 subject (or to related matters) and contains nothing that could fall
       
   731 directly within that overall subject.  (Thus, if the Document is in
       
   732 part a textbook of mathematics, a Secondary Section may not explain
       
   733 any mathematics.)  The relationship could be a matter of historical
       
   734 connection with the subject or with related matters, or of legal,
       
   735 commercial, philosophical, ethical or political position regarding
       
   736 them.
       
   737 
       
   738 The "Invariant Sections" are certain Secondary Sections whose titles
       
   739 are designated, as being those of Invariant Sections, in the notice
       
   740 that says that the Document is released under this License.  If a
       
   741 section does not fit the above definition of Secondary then it is not
       
   742 allowed to be designated as Invariant.  The Document may contain zero
       
   743 Invariant Sections.  If the Document does not identify any Invariant
       
   744 Sections then there are none.
       
   745 
       
   746 The "Cover Texts" are certain short passages of text that are listed,
       
   747 as Front-Cover Texts or Back-Cover Texts, in the notice that says that
       
   748 the Document is released under this License.  A Front-Cover Text may
       
   749 be at most 5 words, and a Back-Cover Text may be at most 25 words.
       
   750 
       
   751 A "Transparent" copy of the Document means a machine-readable copy,
       
   752 represented in a format whose specification is available to the
       
   753 general public, that is suitable for revising the document
       
   754 straightforwardly with generic text editors or (for images composed of
       
   755 pixels) generic paint programs or (for drawings) some widely available
       
   756 drawing editor, and that is suitable for input to text formatters or
       
   757 for automatic translation to a variety of formats suitable for input
       
   758 to text formatters.  A copy made in an otherwise Transparent file
       
   759 format whose markup, or absence of markup, has been arranged to thwart
       
   760 or discourage subsequent modification by readers is not Transparent.
       
   761 An image format is not Transparent if used for any substantial amount
       
   762 of text.  A copy that is not "Transparent" is called "Opaque".
       
   763 
       
   764 Examples of suitable formats for Transparent copies include plain
       
   765 ASCII without markup, Texinfo input format, LaTeX input format, SGML
       
   766 or XML using a publicly available DTD, and standard-conforming simple
       
   767 HTML, PostScript or PDF designed for human modification.  Examples of
       
   768 transparent image formats include PNG, XCF and JPG.  Opaque formats
       
   769 include proprietary formats that can be read and edited only by
       
   770 proprietary word processors, SGML or XML for which the DTD and/or
       
   771 processing tools are not generally available, and the
       
   772 machine-generated HTML, PostScript or PDF produced by some word
       
   773 processors for output purposes only.
       
   774 
       
   775 The "Title Page" means, for a printed book, the title page itself,
       
   776 plus such following pages as are needed to hold, legibly, the material
       
   777 this License requires to appear in the title page.  For works in
       
   778 formats which do not have any title page as such, "Title Page" means
       
   779 the text near the most prominent appearance of the work's title,
       
   780 preceding the beginning of the body of the text.
       
   781 
       
   782 The "publisher" means any person or entity that distributes copies of
       
   783 the Document to the public.
       
   784 
       
   785 A section "Entitled XYZ" means a named subunit of the Document whose
       
   786 title either is precisely XYZ or contains XYZ in parentheses following
       
   787 text that translates XYZ in another language.  (Here XYZ stands for a
       
   788 specific section name mentioned below, such as "Acknowledgements",
       
   789 "Dedications", "Endorsements", or "History".)  To "Preserve the Title"
       
   790 of such a section when you modify the Document means that it remains a
       
   791 section "Entitled XYZ" according to this definition.
       
   792 
       
   793 The Document may include Warranty Disclaimers next to the notice which
       
   794 states that this License applies to the Document.  These Warranty
       
   795 Disclaimers are considered to be included by reference in this
       
   796 License, but only as regards disclaiming warranties: any other
       
   797 implication that these Warranty Disclaimers may have is void and has
       
   798 no effect on the meaning of this License.
       
   799 
       
   800 2. VERBATIM COPYING
       
   801 
       
   802 You may copy and distribute the Document in any medium, either
       
   803 commercially or noncommercially, provided that this License, the
       
   804 copyright notices, and the license notice saying this License applies
       
   805 to the Document are reproduced in all copies, and that you add no
       
   806 other conditions whatsoever to those of this License.  You may not use
       
   807 technical measures to obstruct or control the reading or further
       
   808 copying of the copies you make or distribute.  However, you may accept
       
   809 compensation in exchange for copies.  If you distribute a large enough
       
   810 number of copies you must also follow the conditions in section 3.
       
   811 
       
   812 You may also lend copies, under the same conditions stated above, and
       
   813 you may publicly display copies.
       
   814 
       
   815 
       
   816 3. COPYING IN QUANTITY
       
   817 
       
   818 If you publish printed copies (or copies in media that commonly have
       
   819 printed covers) of the Document, numbering more than 100, and the
       
   820 Document's license notice requires Cover Texts, you must enclose the
       
   821 copies in covers that carry, clearly and legibly, all these Cover
       
   822 Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on
       
   823 the back cover.  Both covers must also clearly and legibly identify
       
   824 you as the publisher of these copies.  The front cover must present
       
   825 the full title with all words of the title equally prominent and
       
   826 visible.  You may add other material on the covers in addition.
       
   827 Copying with changes limited to the covers, as long as they preserve
       
   828 the title of the Document and satisfy these conditions, can be treated
       
   829 as verbatim copying in other respects.
       
   830 
       
   831 If the required texts for either cover are too voluminous to fit
       
   832 legibly, you should put the first ones listed (as many as fit
       
   833 reasonably) on the actual cover, and continue the rest onto adjacent
       
   834 pages.
       
   835 
       
   836 If you publish or distribute Opaque copies of the Document numbering
       
   837 more than 100, you must either include a machine-readable Transparent
       
   838 copy along with each Opaque copy, or state in or with each Opaque copy
       
   839 a computer-network location from which the general network-using
       
   840 public has access to download using public-standard network protocols
       
   841 a complete Transparent copy of the Document, free of added material.
       
   842 If you use the latter option, you must take reasonably prudent steps,
       
   843 when you begin distribution of Opaque copies in quantity, to ensure
       
   844 that this Transparent copy will remain thus accessible at the stated
       
   845 location until at least one year after the last time you distribute an
       
   846 Opaque copy (directly or through your agents or retailers) of that
       
   847 edition to the public.
       
   848 
       
   849 It is requested, but not required, that you contact the authors of the
       
   850 Document well before redistributing any large number of copies, to
       
   851 give them a chance to provide you with an updated version of the
       
   852 Document.
       
   853 
       
   854 
       
   855 4. MODIFICATIONS
       
   856 
       
   857 You may copy and distribute a Modified Version of the Document under
       
   858 the conditions of sections 2 and 3 above, provided that you release
       
   859 the Modified Version under precisely this License, with the Modified
       
   860 Version filling the role of the Document, thus licensing distribution
       
   861 and modification of the Modified Version to whoever possesses a copy
       
   862 of it.  In addition, you must do these things in the Modified Version:
       
   863 
       
   864 A. Use in the Title Page (and on the covers, if any) a title distinct
       
   865    from that of the Document, and from those of previous versions
       
   866    (which should, if there were any, be listed in the History section
       
   867    of the Document).  You may use the same title as a previous version
       
   868    if the original publisher of that version gives permission.
       
   869 B. List on the Title Page, as authors, one or more persons or entities
       
   870    responsible for authorship of the modifications in the Modified
       
   871    Version, together with at least five of the principal authors of the
       
   872    Document (all of its principal authors, if it has fewer than five),
       
   873    unless they release you from this requirement.
       
   874 C. State on the Title page the name of the publisher of the
       
   875    Modified Version, as the publisher.
       
   876 D. Preserve all the copyright notices of the Document.
       
   877 E. Add an appropriate copyright notice for your modifications
       
   878    adjacent to the other copyright notices.
       
   879 F. Include, immediately after the copyright notices, a license notice
       
   880    giving the public permission to use the Modified Version under the
       
   881    terms of this License, in the form shown in the Addendum below.
       
   882 G. Preserve in that license notice the full lists of Invariant Sections
       
   883    and required Cover Texts given in the Document's license notice.
       
   884 H. Include an unaltered copy of this License.
       
   885 I. Preserve the section Entitled "History", Preserve its Title, and add
       
   886    to it an item stating at least the title, year, new authors, and
       
   887    publisher of the Modified Version as given on the Title Page.  If
       
   888    there is no section Entitled "History" in the Document, create one
       
   889    stating the title, year, authors, and publisher of the Document as
       
   890    given on its Title Page, then add an item describing the Modified
       
   891    Version as stated in the previous sentence.
       
   892 J. Preserve the network location, if any, given in the Document for
       
   893    public access to a Transparent copy of the Document, and likewise
       
   894    the network locations given in the Document for previous versions
       
   895    it was based on.  These may be placed in the "History" section.
       
   896    You may omit a network location for a work that was published at
       
   897    least four years before the Document itself, or if the original
       
   898    publisher of the version it refers to gives permission.
       
   899 K. For any section Entitled "Acknowledgements" or "Dedications",
       
   900    Preserve the Title of the section, and preserve in the section all
       
   901    the substance and tone of each of the contributor acknowledgements
       
   902    and/or dedications given therein.
       
   903 L. Preserve all the Invariant Sections of the Document,
       
   904    unaltered in their text and in their titles.  Section numbers
       
   905    or the equivalent are not considered part of the section titles.
       
   906 M. Delete any section Entitled "Endorsements".  Such a section
       
   907    may not be included in the Modified Version.
       
   908 N. Do not retitle any existing section to be Entitled "Endorsements"
       
   909    or to conflict in title with any Invariant Section.
       
   910 O. Preserve any Warranty Disclaimers.
       
   911 
       
   912 If the Modified Version includes new front-matter sections or
       
   913 appendices that qualify as Secondary Sections and contain no material
       
   914 copied from the Document, you may at your option designate some or all
       
   915 of these sections as invariant.  To do this, add their titles to the
       
   916 list of Invariant Sections in the Modified Version's license notice.
       
   917 These titles must be distinct from any other section titles.
       
   918 
       
   919 You may add a section Entitled "Endorsements", provided it contains
       
   920 nothing but endorsements of your Modified Version by various
       
   921 parties--for example, statements of peer review or that the text has
       
   922 been approved by an organization as the authoritative definition of a
       
   923 standard.
       
   924 
       
   925 You may add a passage of up to five words as a Front-Cover Text, and a
       
   926 passage of up to 25 words as a Back-Cover Text, to the end of the list
       
   927 of Cover Texts in the Modified Version.  Only one passage of
       
   928 Front-Cover Text and one of Back-Cover Text may be added by (or
       
   929 through arrangements made by) any one entity.  If the Document already
       
   930 includes a cover text for the same cover, previously added by you or
       
   931 by arrangement made by the same entity you are acting on behalf of,
       
   932 you may not add another; but you may replace the old one, on explicit
       
   933 permission from the previous publisher that added the old one.
       
   934 
       
   935 The author(s) and publisher(s) of the Document do not by this License
       
   936 give permission to use their names for publicity for or to assert or
       
   937 imply endorsement of any Modified Version.
       
   938 
       
   939 
       
   940 5. COMBINING DOCUMENTS
       
   941 
       
   942 You may combine the Document with other documents released under this
       
   943 License, under the terms defined in section 4 above for modified
       
   944 versions, provided that you include in the combination all of the
       
   945 Invariant Sections of all of the original documents, unmodified, and
       
   946 list them all as Invariant Sections of your combined work in its
       
   947 license notice, and that you preserve all their Warranty Disclaimers.
       
   948 
       
   949 The combined work need only contain one copy of this License, and
       
   950 multiple identical Invariant Sections may be replaced with a single
       
   951 copy.  If there are multiple Invariant Sections with the same name but
       
   952 different contents, make the title of each such section unique by
       
   953 adding at the end of it, in parentheses, the name of the original
       
   954 author or publisher of that section if known, or else a unique number.
       
   955 Make the same adjustment to the section titles in the list of
       
   956 Invariant Sections in the license notice of the combined work.
       
   957 
       
   958 In the combination, you must combine any sections Entitled "History"
       
   959 in the various original documents, forming one section Entitled
       
   960 "History"; likewise combine any sections Entitled "Acknowledgements",
       
   961 and any sections Entitled "Dedications".  You must delete all sections
       
   962 Entitled "Endorsements".
       
   963 
       
   964 
       
   965 6. COLLECTIONS OF DOCUMENTS
       
   966 
       
   967 You may make a collection consisting of the Document and other
       
   968 documents released under this License, and replace the individual
       
   969 copies of this License in the various documents with a single copy
       
   970 that is included in the collection, provided that you follow the rules
       
   971 of this License for verbatim copying of each of the documents in all
       
   972 other respects.
       
   973 
       
   974 You may extract a single document from such a collection, and
       
   975 distribute it individually under this License, provided you insert a
       
   976 copy of this License into the extracted document, and follow this
       
   977 License in all other respects regarding verbatim copying of that
       
   978 document.
       
   979 
       
   980 
       
   981 7. AGGREGATION WITH INDEPENDENT WORKS
       
   982 
       
   983 A compilation of the Document or its derivatives with other separate
       
   984 and independent documents or works, in or on a volume of a storage or
       
   985 distribution medium, is called an "aggregate" if the copyright
       
   986 resulting from the compilation is not used to limit the legal rights
       
   987 of the compilation's users beyond what the individual works permit.
       
   988 When the Document is included in an aggregate, this License does not
       
   989 apply to the other works in the aggregate which are not themselves
       
   990 derivative works of the Document.
       
   991 
       
   992 If the Cover Text requirement of section 3 is applicable to these
       
   993 copies of the Document, then if the Document is less than one half of
       
   994 the entire aggregate, the Document's Cover Texts may be placed on
       
   995 covers that bracket the Document within the aggregate, or the
       
   996 electronic equivalent of covers if the Document is in electronic form.
       
   997 Otherwise they must appear on printed covers that bracket the whole
       
   998 aggregate.
       
   999 
       
  1000 
       
  1001 8. TRANSLATION
       
  1002 
       
  1003 Translation is considered a kind of modification, so you may
       
  1004 distribute translations of the Document under the terms of section 4.
       
  1005 Replacing Invariant Sections with translations requires special
       
  1006 permission from their copyright holders, but you may include
       
  1007 translations of some or all Invariant Sections in addition to the
       
  1008 original versions of these Invariant Sections.  You may include a
       
  1009 translation of this License, and all the license notices in the
       
  1010 Document, and any Warranty Disclaimers, provided that you also include
       
  1011 the original English version of this License and the original versions
       
  1012 of those notices and disclaimers.  In case of a disagreement between
       
  1013 the translation and the original version of this License or a notice
       
  1014 or disclaimer, the original version will prevail.
       
  1015 
       
  1016 If a section in the Document is Entitled "Acknowledgements",
       
  1017 "Dedications", or "History", the requirement (section 4) to Preserve
       
  1018 its Title (section 1) will typically require changing the actual
       
  1019 title.
       
  1020 
       
  1021 
       
  1022 9. TERMINATION
       
  1023 
       
  1024 You may not copy, modify, sublicense, or distribute the Document
       
  1025 except as expressly provided under this License.  Any attempt
       
  1026 otherwise to copy, modify, sublicense, or distribute it is void, and
       
  1027 will automatically terminate your rights under this License.
       
  1028 
       
  1029 However, if you cease all violation of this License, then your license
       
  1030 from a particular copyright holder is reinstated (a) provisionally,
       
  1031 unless and until the copyright holder explicitly and finally
       
  1032 terminates your license, and (b) permanently, if the copyright holder
       
  1033 fails to notify you of the violation by some reasonable means prior to
       
  1034 60 days after the cessation.
       
  1035 
       
  1036 Moreover, your license from a particular copyright holder is
       
  1037 reinstated permanently if the copyright holder notifies you of the
       
  1038 violation by some reasonable means, this is the first time you have
       
  1039 received notice of violation of this License (for any work) from that
       
  1040 copyright holder, and you cure the violation prior to 30 days after
       
  1041 your receipt of the notice.
       
  1042 
       
  1043 Termination of your rights under this section does not terminate the
       
  1044 licenses of parties who have received copies or rights from you under
       
  1045 this License.  If your rights have been terminated and not permanently
       
  1046 reinstated, receipt of a copy of some or all of the same material does
       
  1047 not give you any rights to use it.
       
  1048 
       
  1049 
       
  1050 10. FUTURE REVISIONS OF THIS LICENSE
       
  1051 
       
  1052 The Free Software Foundation may publish new, revised versions of the
       
  1053 GNU Free Documentation License from time to time.  Such new versions
       
  1054 will be similar in spirit to the present version, but may differ in
       
  1055 detail to address new problems or concerns.  See
       
  1056 http://www.gnu.org/copyleft/.
       
  1057 
       
  1058 Each version of the License is given a distinguishing version number.
       
  1059 If the Document specifies that a particular numbered version of this
       
  1060 License "or any later version" applies to it, you have the option of
       
  1061 following the terms and conditions either of that specified version or
       
  1062 of any later version that has been published (not as a draft) by the
       
  1063 Free Software Foundation.  If the Document does not specify a version
       
  1064 number of this License, you may choose any version ever published (not
       
  1065 as a draft) by the Free Software Foundation.  If the Document
       
  1066 specifies that a proxy can decide which future versions of this
       
  1067 License can be used, that proxy's public statement of acceptance of a
       
  1068 version permanently authorizes you to choose that version for the
       
  1069 Document.
       
  1070 
       
  1071 11. RELICENSING
       
  1072 
       
  1073 "Massive Multiauthor Collaboration Site" (or "MMC Site") means any
       
  1074 World Wide Web server that publishes copyrightable works and also
       
  1075 provides prominent facilities for anybody to edit those works.  A
       
  1076 public wiki that anybody can edit is an example of such a server.  A
       
  1077 "Massive Multiauthor Collaboration" (or "MMC") contained in the site
       
  1078 means any set of copyrightable works thus published on the MMC site.
       
  1079 
       
  1080 "CC-BY-SA" means the Creative Commons Attribution-Share Alike 3.0 
       
  1081 license published by Creative Commons Corporation, a not-for-profit 
       
  1082 corporation with a principal place of business in San Francisco, 
       
  1083 California, as well as future copyleft versions of that license 
       
  1084 published by that same organization.
       
  1085 
       
  1086 "Incorporate" means to publish or republish a Document, in whole or in 
       
  1087 part, as part of another Document.
       
  1088 
       
  1089 An MMC is "eligible for relicensing" if it is licensed under this 
       
  1090 License, and if all works that were first published under this License 
       
  1091 somewhere other than this MMC, and subsequently incorporated in whole or 
       
  1092 in part into the MMC, (1) had no cover texts or invariant sections, and 
       
  1093 (2) were thus incorporated prior to November 1, 2008.
       
  1094 
       
  1095 The operator of an MMC Site may republish an MMC contained in the site
       
  1096 under CC-BY-SA on the same site at any time before August 1, 2009,
       
  1097 provided the MMC is eligible for relicensing.
       
  1098 
       
  1099 
       
  1100 ADDENDUM: How to use this License for your documents
       
  1101 
       
  1102 To use this License in a document you have written, include a copy of
       
  1103 the License in the document and put the following copyright and
       
  1104 license notices just after the title page:
       
  1105 
       
  1106     Copyright (c)  YEAR  YOUR NAME.
       
  1107     Permission is granted to copy, distribute and/or modify this document
       
  1108     under the terms of the GNU Free Documentation License, Version 1.3
       
  1109     or any later version published by the Free Software Foundation;
       
  1110     with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
       
  1111     A copy of the license is included in the section entitled "GNU
       
  1112     Free Documentation License".
       
  1113 
       
  1114 If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
       
  1115 replace the "with...Texts." line with this:
       
  1116 
       
  1117     with the Invariant Sections being LIST THEIR TITLES, with the
       
  1118     Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST.
       
  1119 
       
  1120 If you have Invariant Sections without Cover Texts, or some other
       
  1121 combination of the three, merge those two alternatives to suit the
       
  1122 situation.
       
  1123 
       
  1124 If your document contains nontrivial examples of program code, we
       
  1125 recommend releasing these examples in parallel under your choice of
       
  1126 free software license, such as the GNU General Public License,
       
  1127 to permit their use in free software.