File:  [gforth] / gforth / doc / gpl.texi
Revision 1.2: download - view: text, annotated - select for diffs
Mon Dec 31 18:56:18 2007 UTC (13 years, 9 months ago) by anton
Branches: MAIN
CVS tags: v0-7-0, HEAD
Updated COPYING and doc/gpl.texi to GPL v3
adjusted dectioning etc in documentation for new gpl.texi

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

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