Annotation of rpl/COPYING, revision 1.48

1.45      bertrand    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>.

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