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  1<html><head><title>GNU General Public License - GNU Project - Free Software Foundation (FSF)</title></head><body>
  2<h3 style="text-align: center;">GNU GENERAL PUBLIC LICENSE</h3>
  3<p style="text-align: center;">Version 3, 29 June 2007</p>
  4
  5<p>Copyright Š 2007 Free Software Foundation, Inc. &lt;http://fsf.org/&gt;</p><p>
  6 Everyone is permitted to copy and distribute verbatim copies
  7 of this license document, but changing it is not allowed.</p>
  8
  9<h3><a name="preamble"></a>Preamble</h3>
 10
 11<p>The GNU General Public License is a free, copyleft license for
 12software and other kinds of works.</p>
 13
 14<p>The licenses for most software and other practical works are designed
 15to take away your freedom to share and change the works.  By contrast,
 16the GNU General Public License is intended to guarantee your freedom to
 17share and change all versions of a program--to make sure it remains free
 18software for all its users.  We, the Free Software Foundation, use the
 19GNU General Public License for most of our software; it applies also to
 20any other work released this way by its authors.  You can apply it to
 21your programs, too.</p>
 22
 23<p>When we speak of free software, we are referring to freedom, not
 24price.  Our General Public Licenses are designed to make sure that you
 25have the freedom to distribute copies of free software (and charge for
 26them if you wish), that you receive source code or can get it if you
 27want it, that you can change the software or use pieces of it in new
 28free programs, and that you know you can do these things.</p>
 29
 30<p>To protect your rights, we need to prevent others from denying you
 31these rights or asking you to surrender the rights.  Therefore, you have
 32certain responsibilities if you distribute copies of the software, or if
 33you modify it: responsibilities to respect the freedom of others.</p>
 34
 35<p>For example, if you distribute copies of such a program, whether
 36gratis or for a fee, you must pass on to the recipients the same
 37freedoms that you received.  You must make sure that they, too, receive
 38or can get the source code.  And you must show them these terms so they
 39know their rights.</p>
 40
 41<p>Developers that use the GNU GPL protect your rights with two steps:
 42(1) assert copyright on the software, and (2) offer you this License
 43giving you legal permission to copy, distribute and/or modify it.</p>
 44
 45<p>For the developers' and authors' protection, the GPL clearly explains
 46that there is no warranty for this free software.  For both users' and
 47authors' sake, the GPL requires that modified versions be marked as
 48changed, so that their problems will not be attributed erroneously to
 49authors of previous versions.</p>
 50
 51<p>Some devices are designed to deny users access to install or run
 52modified versions of the software inside them, although the manufacturer
 53can do so.  This is fundamentally incompatible with the aim of
 54protecting users' freedom to change the software.  The systematic
 55pattern of such abuse occurs in the area of products for individuals to
 56use, which is precisely where it is most unacceptable.  Therefore, we
 57have designed this version of the GPL to prohibit the practice for those
 58products.  If such problems arise substantially in other domains, we
 59stand ready to extend this provision to those domains in future versions
 60of the GPL, as needed to protect the freedom of users.</p>
 61
 62<p>Finally, every program is threatened constantly by software patents.
 63States should not allow patents to restrict development and use of
 64software on general-purpose computers, but in those that do, we wish to
 65avoid the special danger that patents applied to a free program could
 66make it effectively proprietary.  To prevent this, the GPL assures that
 67patents cannot be used to render the program non-free.</p>
 68
 69<p>The precise terms and conditions for copying, distribution and
 70modification follow.</p>
 71
 72<h3><a name="terms"></a>TERMS AND CONDITIONS</h3>
 73
 74<h4><a name="section0"></a>0. Definitions.</h4>
 75
 76<p>&#8220;This License&#8221; refers to version 3 of the GNU General Public License.</p>
 77
 78<p>&#8220;Copyright&#8221; also means copyright-like laws that apply to other kinds of
 79works, such as semiconductor masks.</p>
 80 
 81<p>&#8220;The Program&#8221; refers to any copyrightable work licensed under this
 82License.  Each licensee is addressed as &#8220;you&#8221;.  &#8220;Licensees&#8221; and
 83&#8220;recipients&#8221; may be individuals or organizations.</p>
 84
 85<p>To &#8220;modify&#8221; a work means to copy from or adapt all or part of the work
 86in a fashion requiring copyright permission, other than the making of an
 87exact copy.  The resulting work is called a &#8220;modified version&#8221; of the
 88earlier work or a work &#8220;based on&#8221; the earlier work.</p>
 89
 90<p>A &#8220;covered work&#8221; means either the unmodified Program or a work based
 91on the Program.</p>
 92
 93<p>To &#8220;propagate&#8221; a work means to do anything with it that, without
 94permission, would make you directly or secondarily liable for
 95infringement under applicable copyright law, except executing it on a
 96computer or modifying a private copy.  Propagation includes copying,
 97distribution (with or without modification), making available to the
 98public, and in some countries other activities as well.</p>
 99
100<p>To &#8220;convey&#8221; a work means any kind of propagation that enables other
101parties to make or receive copies.  Mere interaction with a user through
102a computer network, with no transfer of a copy, is not conveying.</p>
103
104<p>An interactive user interface displays &#8220;Appropriate Legal Notices&#8221;
105to the extent that it includes a convenient and prominently visible
106feature that (1) displays an appropriate copyright notice, and (2)
107tells the user that there is no warranty for the work (except to the
108extent that warranties are provided), that licensees may convey the
109work under this License, and how to view a copy of this License.  If
110the interface presents a list of user commands or options, such as a
111menu, a prominent item in the list meets this criterion.</p>
112
113<h4><a name="section1"></a>1. Source Code.</h4>
114
115<p>The &#8220;source code&#8221; for a work means the preferred form of the work
116for making modifications to it.  &#8220;Object code&#8221; means any non-source
117form of a work.</p>
118
119<p>A &#8220;Standard Interface&#8221; means an interface that either is an official
120standard defined by a recognized standards body, or, in the case of
121interfaces specified for a particular programming language, one that
122is widely used among developers working in that language.</p>
123
124<p>The &#8220;System Libraries&#8221; of an executable work include anything, other
125than the work as a whole, that (a) is included in the normal form of
126packaging a Major Component, but which is not part of that Major
127Component, and (b) serves only to enable use of the work with that
128Major Component, or to implement a Standard Interface for which an
129implementation is available to the public in source code form.  A
130&#8220;Major Component&#8221;, in this context, means a major essential component
131(kernel, window system, and so on) of the specific operating system
132(if any) on which the executable work runs, or a compiler used to
133produce the work, or an object code interpreter used to run it.</p>
134
135<p>The &#8220;Corresponding Source&#8221; for a work in object code form means all
136the source code needed to generate, install, and (for an executable
137work) run the object code and to modify the work, including scripts to
138control those activities.  However, it does not include the work's
139System Libraries, or general-purpose tools or generally available free
140programs which are used unmodified in performing those activities but
141which are not part of the work.  For example, Corresponding Source
142includes interface definition files associated with source files for
143the work, and the source code for shared libraries and dynamically
144linked subprograms that the work is specifically designed to require,
145such as by intimate data communication or control flow between those
146subprograms and other parts of the work.</p>
147
148<p>The Corresponding Source need not include anything that users
149can regenerate automatically from other parts of the Corresponding
150Source.</p>
151
152<p>The Corresponding Source for a work in source code form is that
153same work.</p>
154
155<h4><a name="section2"></a>2. Basic Permissions.</h4>
156
157<p>All rights granted under this License are granted for the term of
158copyright on the Program, and are irrevocable provided the stated
159conditions are met.  This License explicitly affirms your unlimited
160permission to run the unmodified Program.  The output from running a
161covered work is covered by this License only if the output, given its
162content, constitutes a covered work.  This License acknowledges your
163rights of fair use or other equivalent, as provided by copyright law.</p>
164
165<p>You may make, run and propagate covered works that you do not
166convey, without conditions so long as your license otherwise remains
167in force.  You may convey covered works to others for the sole purpose
168of having them make modifications exclusively for you, or provide you
169with facilities for running those works, provided that you comply with
170the terms of this License in conveying all material for which you do
171not control copyright.  Those thus making or running the covered works
172for you must do so exclusively on your behalf, under your direction
173and control, on terms that prohibit them from making any copies of
174your copyrighted material outside their relationship with you.</p>
175
176<p>Conveying under any other circumstances is permitted solely under
177the conditions stated below.  Sublicensing is not allowed; section 10
178makes it unnecessary.</p>
179
180<h4><a name="section3"></a>3. Protecting Users' Legal Rights From Anti-Circumvention Law.</h4>
181
182<p>No covered work shall be deemed part of an effective technological
183measure under any applicable law fulfilling obligations under article
18411 of the WIPO copyright treaty adopted on 20 December 1996, or
185similar laws prohibiting or restricting circumvention of such
186measures.</p>
187
188<p>When you convey a covered work, you waive any legal power to forbid
189circumvention of technological measures to the extent such circumvention
190is effected by exercising rights under this License with respect to
191the covered work, and you disclaim any intention to limit operation or
192modification of the work as a means of enforcing, against the work's
193users, your or third parties' legal rights to forbid circumvention of
194technological measures.</p>
195
196<h4><a name="section4"></a>4. Conveying Verbatim Copies.</h4>
197
198<p>You may convey verbatim copies of the Program's source code as you
199receive it, in any medium, provided that you conspicuously and
200appropriately publish on each copy an appropriate copyright notice;
201keep intact all notices stating that this License and any
202non-permissive terms added in accord with section 7 apply to the code;
203keep intact all notices of the absence of any warranty; and give all
204recipients a copy of this License along with the Program.</p>
205
206<p>You may charge any price or no price for each copy that you convey,
207and you may offer support or warranty protection for a fee.</p>
208
209<h4><a name="section5"></a>5. Conveying Modified Source Versions.</h4>
210
211<p>You may convey a work based on the Program, or the modifications to
212produce it from the Program, in the form of source code under the
213terms of section 4, provided that you also meet all of these conditions:</p>
214
215<ul>
216<li>a) The work must carry prominent notices stating that you modified
217    it, and giving a relevant date.</li>
218
219<li>b) The work must carry prominent notices stating that it is
220    released under this License and any conditions added under section
221    7.  This requirement modifies the requirement in section 4 to
222    &#8220;keep intact all notices&#8221;.</li>
223
224<li>c) You must license the entire work, as a whole, under this
225    License to anyone who comes into possession of a copy.  This
226    License will therefore apply, along with any applicable section 7
227    additional terms, to the whole of the work, and all its parts,
228    regardless of how they are packaged.  This License gives no
229    permission to license the work in any other way, but it does not
230    invalidate such permission if you have separately received it.</li>
231
232<li>d) If the work has interactive user interfaces, each must display
233    Appropriate Legal Notices; however, if the Program has interactive
234    interfaces that do not display Appropriate Legal Notices, your
235    work need not make them do so.</li>
236</ul>
237
238<p>A compilation of a covered work with other separate and independent
239works, which are not by their nature extensions of the covered work,
240and which are not combined with it such as to form a larger program,
241in or on a volume of a storage or distribution medium, is called an
242&#8220;aggregate&#8221; if the compilation and its resulting copyright are not
243used to limit the access or legal rights of the compilation's users
244beyond what the individual works permit.  Inclusion of a covered work
245in an aggregate does not cause this License to apply to the other
246parts of the aggregate.</p>
247
248<h4><a name="section6"></a>6. Conveying Non-Source Forms.</h4>
249
250<p>You may convey a covered work in object code form under the terms
251of sections 4 and 5, provided that you also convey the
252machine-readable Corresponding Source under the terms of this License,
253in one of these ways:</p>
254
255<ul>
256<li>a) Convey the object code in, or embodied in, a physical product
257    (including a physical distribution medium), accompanied by the
258    Corresponding Source fixed on a durable physical medium
259    customarily used for software interchange.</li>
260
261<li>b) Convey the object code in, or embodied in, a physical product
262    (including a physical distribution medium), accompanied by a
263    written offer, valid for at least three years and valid for as
264    long as you offer spare parts or customer support for that product
265    model, to give anyone who possesses the object code either (1) a
266    copy of the Corresponding Source for all the software in the
267    product that is covered by this License, on a durable physical
268    medium customarily used for software interchange, for a price no
269    more than your reasonable cost of physically performing this
270    conveying of source, or (2) access to copy the
271    Corresponding Source from a network server at no charge.</li>
272
273<li>c) Convey individual copies of the object code with a copy of the
274    written offer to provide the Corresponding Source.  This
275    alternative is allowed only occasionally and noncommercially, and
276    only if you received the object code with such an offer, in accord
277    with subsection 6b.</li>
278
279<li>d) Convey the object code by offering access from a designated
280    place (gratis or for a charge), and offer equivalent access to the
281    Corresponding Source in the same way through the same place at no
282    further charge.  You need not require recipients to copy the
283    Corresponding Source along with the object code.  If the place to
284    copy the object code is a network server, the Corresponding Source
285    may be on a different server (operated by you or a third party)
286    that supports equivalent copying facilities, provided you maintain
287    clear directions next to the object code saying where to find the
288    Corresponding Source.  Regardless of what server hosts the
289    Corresponding Source, you remain obligated to ensure that it is
290    available for as long as needed to satisfy these requirements.</li>
291
292<li>e) Convey the object code using peer-to-peer transmission, provided
293    you inform other peers where the object code and Corresponding
294    Source of the work are being offered to the general public at no
295    charge under subsection 6d.</li>
296</ul>
297
298<p>A separable portion of the object code, whose source code is excluded
299from the Corresponding Source as a System Library, need not be
300included in conveying the object code work.</p>
301
302<p>A &#8220;User Product&#8221; is either (1) a &#8220;consumer product&#8221;, which means any
303tangible personal property which is normally used for personal, family,
304or household purposes, or (2) anything designed or sold for incorporation
305into a dwelling.  In determining whether a product is a consumer product,
306doubtful cases shall be resolved in favor of coverage.  For a particular
307product received by a particular user, &#8220;normally used&#8221; refers to a
308typical or common use of that class of product, regardless of the status
309of the particular user or of the way in which the particular user
310actually uses, or expects or is expected to use, the product.  A product
311is a consumer product regardless of whether the product has substantial
312commercial, industrial or non-consumer uses, unless such uses represent
313the only significant mode of use of the product.</p>
314
315<p>&#8220;Installation Information&#8221; for a User Product means any methods,
316procedures, authorization keys, or other information required to install
317and execute modified versions of a covered work in that User Product from
318a modified version of its Corresponding Source.  The information must
319suffice to ensure that the continued functioning of the modified object
320code is in no case prevented or interfered with solely because
321modification has been made.</p>
322
323<p>If you convey an object code work under this section in, or with, or
324specifically for use in, a User Product, and the conveying occurs as
325part of a transaction in which the right of possession and use of the
326User Product is transferred to the recipient in perpetuity or for a
327fixed term (regardless of how the transaction is characterized), the
328Corresponding Source conveyed under this section must be accompanied
329by the Installation Information.  But this requirement does not apply
330if neither you nor any third party retains the ability to install
331modified object code on the User Product (for example, the work has
332been installed in ROM).</p>
333
334<p>The requirement to provide Installation Information does not include a
335requirement to continue to provide support service, warranty, or updates
336for a work that has been modified or installed by the recipient, or for
337the User Product in which it has been modified or installed.  Access to a
338network may be denied when the modification itself materially and
339adversely affects the operation of the network or violates the rules and
340protocols for communication across the network.</p>
341
342<p>Corresponding Source conveyed, and Installation Information provided,
343in accord with this section must be in a format that is publicly
344documented (and with an implementation available to the public in
345source code form), and must require no special password or key for
346unpacking, reading or copying.</p>
347
348<h4><a name="section7"></a>7. Additional Terms.</h4>
349
350<p>&#8220;Additional permissions&#8221; are terms that supplement the terms of this
351License by making exceptions from one or more of its conditions.
352Additional permissions that are applicable to the entire Program shall
353be treated as though they were included in this License, to the extent
354that they are valid under applicable law.  If additional permissions
355apply only to part of the Program, that part may be used separately
356under those permissions, but the entire Program remains governed by
357this License without regard to the additional permissions.</p>
358
359<p>When you convey a copy of a covered work, you may at your option
360remove any additional permissions from that copy, or from any part of
361it.  (Additional permissions may be written to require their own
362removal in certain cases when you modify the work.)  You may place
363additional permissions on material, added by you to a covered work,
364for which you have or can give appropriate copyright permission.</p>
365
366<p>Notwithstanding any other provision of this License, for material you
367add to a covered work, you may (if authorized by the copyright holders of
368that material) supplement the terms of this License with terms:</p>
369
370<ul>
371<li>a) Disclaiming warranty or limiting liability differently from the
372    terms of sections 15 and 16 of this License; or</li>
373
374<li>b) Requiring preservation of specified reasonable legal notices or
375    author attributions in that material or in the Appropriate Legal
376    Notices displayed by works containing it; or</li>
377
378<li>c) Prohibiting misrepresentation of the origin of that material, or
379    requiring that modified versions of such material be marked in
380    reasonable ways as different from the original version; or</li>
381
382<li>d) Limiting the use for publicity purposes of names of licensors or
383    authors of the material; or</li>
384
385<li>e) Declining to grant rights under trademark law for use of some
386    trade names, trademarks, or service marks; or</li>
387
388<li>f) Requiring indemnification of licensors and authors of that
389    material by anyone who conveys the material (or modified versions of
390    it) with contractual assumptions of liability to the recipient, for
391    any liability that these contractual assumptions directly impose on
392    those licensors and authors.</li>
393</ul>
394
395<p>All other non-permissive additional terms are considered &#8220;further
396restrictions&#8221; within the meaning of section 10.  If the Program as you
397received it, or any part of it, contains a notice stating that it is
398governed by this License along with a term that is a further
399restriction, you may remove that term.  If a license document contains
400a further restriction but permits relicensing or conveying under this
401License, you may add to a covered work material governed by the terms
402of that license document, provided that the further restriction does
403not survive such relicensing or conveying.</p>
404
405<p>If you add terms to a covered work in accord with this section, you
406must place, in the relevant source files, a statement of the
407additional terms that apply to those files, or a notice indicating
408where to find the applicable terms.</p>
409
410<p>Additional terms, permissive or non-permissive, may be stated in the
411form of a separately written license, or stated as exceptions;
412the above requirements apply either way.</p>
413
414<h4><a name="section8"></a>8. Termination.</h4>
415
416<p>You may not propagate or modify a covered work except as expressly
417provided under this License.  Any attempt otherwise to propagate or
418modify it is void, and will automatically terminate your rights under
419this License (including any patent licenses granted under the third
420paragraph of section 11).</p>
421
422<p>However, if you cease all violation of this License, then your
423license from a particular copyright holder is reinstated (a)
424provisionally, unless and until the copyright holder explicitly and
425finally terminates your license, and (b) permanently, if the copyright
426holder fails to notify you of the violation by some reasonable means
427prior to 60 days after the cessation.</p>
428
429<p>Moreover, your license from a particular copyright holder is
430reinstated permanently if the copyright holder notifies you of the
431violation by some reasonable means, this is the first time you have
432received notice of violation of this License (for any work) from that
433copyright holder, and you cure the violation prior to 30 days after
434your receipt of the notice.</p>
435
436<p>Termination of your rights under this section does not terminate the
437licenses of parties who have received copies or rights from you under
438this License.  If your rights have been terminated and not permanently
439reinstated, you do not qualify to receive new licenses for the same
440material under section 10.</p>
441
442<h4><a name="section9"></a>9. Acceptance Not Required for Having Copies.</h4>
443
444<p>You are not required to accept this License in order to receive or
445run a copy of the Program.  Ancillary propagation of a covered work
446occurring solely as a consequence of using peer-to-peer transmission
447to receive a copy likewise does not require acceptance.  However,
448nothing other than this License grants you permission to propagate or
449modify any covered work.  These actions infringe copyright if you do
450not accept this License.  Therefore, by modifying or propagating a
451covered work, you indicate your acceptance of this License to do so.</p>
452
453<h4><a name="section10"></a>10. Automatic Licensing of Downstream Recipients.</h4>
454
455<p>Each time you convey a covered work, the recipient automatically
456receives a license from the original licensors, to run, modify and
457propagate that work, subject to this License.  You are not responsible
458for enforcing compliance by third parties with this License.</p>
459
460<p>An &#8220;entity transaction&#8221; is a transaction transferring control of an
461organization, or substantially all assets of one, or subdividing an
462organization, or merging organizations.  If propagation of a covered
463work results from an entity transaction, each party to that
464transaction who receives a copy of the work also receives whatever
465licenses to the work the party's predecessor in interest had or could
466give under the previous paragraph, plus a right to possession of the
467Corresponding Source of the work from the predecessor in interest, if
468the predecessor has it or can get it with reasonable efforts.</p>
469
470<p>You may not impose any further restrictions on the exercise of the
471rights granted or affirmed under this License.  For example, you may
472not impose a license fee, royalty, or other charge for exercise of
473rights granted under this License, and you may not initiate litigation
474(including a cross-claim or counterclaim in a lawsuit) alleging that
475any patent claim is infringed by making, using, selling, offering for
476sale, or importing the Program or any portion of it.</p>
477
478<h4><a name="section11"></a>11. Patents.</h4>
479
480<p>A &#8220;contributor&#8221; is a copyright holder who authorizes use under this
481License of the Program or a work on which the Program is based.  The
482work thus licensed is called the contributor's &#8220;contributor version&#8221;.</p>
483
484<p>A contributor's &#8220;essential patent claims&#8221; are all patent claims
485owned or controlled by the contributor, whether already acquired or
486hereafter acquired, that would be infringed by some manner, permitted
487by this License, of making, using, or selling its contributor version,
488but do not include claims that would be infringed only as a
489consequence of further modification of the contributor version.  For
490purposes of this definition, &#8220;control&#8221; includes the right to grant
491patent sublicenses in a manner consistent with the requirements of
492this License.</p>
493
494<p>Each contributor grants you a non-exclusive, worldwide, royalty-free
495patent license under the contributor's essential patent claims, to
496make, use, sell, offer for sale, import and otherwise run, modify and
497propagate the contents of its contributor version.</p>
498
499<p>In the following three paragraphs, a &#8220;patent license&#8221; is any express
500agreement or commitment, however denominated, not to enforce a patent
501(such as an express permission to practice a patent or covenant not to
502sue for patent infringement).  To &#8220;grant&#8221; such a patent license to a
503party means to make such an agreement or commitment not to enforce a
504patent against the party.</p>
505
506<p>If you convey a covered work, knowingly relying on a patent license,
507and the Corresponding Source of the work is not available for anyone
508to copy, free of charge and under the terms of this License, through a
509publicly available network server or other readily accessible means,
510then you must either (1) cause the Corresponding Source to be so
511available, or (2) arrange to deprive yourself of the benefit of the
512patent license for this particular work, or (3) arrange, in a manner
513consistent with the requirements of this License, to extend the patent
514license to downstream recipients.  &#8220;Knowingly relying&#8221; means you have
515actual knowledge that, but for the patent license, your conveying the
516covered work in a country, or your recipient's use of the covered work
517in a country, would infringe one or more identifiable patents in that
518country that you have reason to believe are valid.</p>
519  
520<p>If, pursuant to or in connection with a single transaction or
521arrangement, you convey, or propagate by procuring conveyance of, a
522covered work, and grant a patent license to some of the parties
523receiving the covered work authorizing them to use, propagate, modify
524or convey a specific copy of the covered work, then the patent license
525you grant is automatically extended to all recipients of the covered
526work and works based on it.</p>
527
528<p>A patent license is &#8220;discriminatory&#8221; if it does not include within
529the scope of its coverage, prohibits the exercise of, or is
530conditioned on the non-exercise of one or more of the rights that are
531specifically granted under this License.  You may not convey a covered
532work if you are a party to an arrangement with a third party that is
533in the business of distributing software, under which you make payment
534to the third party based on the extent of your activity of conveying
535the work, and under which the third party grants, to any of the
536parties who would receive the covered work from you, a discriminatory
537patent license (a) in connection with copies of the covered work
538conveyed by you (or copies made from those copies), or (b) primarily
539for and in connection with specific products or compilations that
540contain the covered work, unless you entered into that arrangement,
541or that patent license was granted, prior to 28 March 2007.</p>
542
543<p>Nothing in this License shall be construed as excluding or limiting
544any implied license or other defenses to infringement that may
545otherwise be available to you under applicable patent law.</p>
546
547<h4><a name="section12"></a>12. No Surrender of Others' Freedom.</h4>
548
549<p>If conditions are imposed on you (whether by court order, agreement or
550otherwise) that contradict the conditions of this License, they do not
551excuse you from the conditions of this License.  If you cannot convey a
552covered work so as to satisfy simultaneously your obligations under this
553License and any other pertinent obligations, then as a consequence you may
554not convey it at all.  For example, if you agree to terms that obligate you
555to collect a royalty for further conveying from those to whom you convey
556the Program, the only way you could satisfy both those terms and this
557License would be to refrain entirely from conveying the Program.</p>
558
559<h4><a name="section13"></a>13. Use with the GNU Affero General Public License.</h4>
560
561<p>Notwithstanding any other provision of this License, you have
562permission to link or combine any covered work with a work licensed
563under version 3 of the GNU Affero General Public License into a single
564combined work, and to convey the resulting work.  The terms of this
565License will continue to apply to the part which is the covered work,
566but the special requirements of the GNU Affero General Public License,
567section 13, concerning interaction through a network will apply to the
568combination as such.</p>
569
570<h4><a name="section14"></a>14. Revised Versions of this License.</h4>
571
572<p>The Free Software Foundation may publish revised and/or new versions of
573the GNU General Public License from time to time.  Such new versions will
574be similar in spirit to the present version, but may differ in detail to
575address new problems or concerns.</p>
576
577<p>Each version is given a distinguishing version number.  If the
578Program specifies that a certain numbered version of the GNU General
579Public License &#8220;or any later version&#8221; applies to it, you have the
580option of following the terms and conditions either of that numbered
581version or of any later version published by the Free Software
582Foundation.  If the Program does not specify a version number of the
583GNU General Public License, you may choose any version ever published
584by the Free Software Foundation.</p>
585
586<p>If the Program specifies that a proxy can decide which future
587versions of the GNU General Public License can be used, that proxy's
588public statement of acceptance of a version permanently authorizes you
589to choose that version for the Program.</p>
590
591<p>Later license versions may give you additional or different
592permissions.  However, no additional obligations are imposed on any
593author or copyright holder as a result of your choosing to follow a
594later version.</p>
595
596<h4><a name="section15"></a>15. Disclaimer of Warranty.</h4>
597
598<p>THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
599APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
600HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM &#8220;AS IS&#8221; WITHOUT WARRANTY
601OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
602THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
603PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
604IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
605ALL NECESSARY SERVICING, REPAIR OR CORRECTION.</p>
606
607<h4><a name="section16"></a>16. Limitation of Liability.</h4>
608
609<p>IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
610WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
611THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
612GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
613USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
614DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
615PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
616EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
617SUCH DAMAGES.</p>
618
619<h4><a name="section17"></a>17. Interpretation of Sections 15 and 16.</h4>
620
621<p>If the disclaimer of warranty and limitation of liability provided
622above cannot be given local legal effect according to their terms,
623reviewing courts shall apply local law that most closely approximates
624an absolute waiver of all civil liability in connection with the
625Program, unless a warranty or assumption of liability accompanies a
626copy of the Program in return for a fee.</p>
627
628<p>END OF TERMS AND CONDITIONS</p>
629
630<h3><a name="howto"></a>How to Apply These Terms to Your New Programs</h3>
631
632<p>If you develop a new program, and you want it to be of the greatest
633possible use to the public, the best way to achieve this is to make it
634free software which everyone can redistribute and change under these terms.</p>
635
636<p>To do so, attach the following notices to the program.  It is safest
637to attach them to the start of each source file to most effectively
638state the exclusion of warranty; and each file should have at least
639the &#8220;copyright&#8221; line and a pointer to where the full notice is found.</p>
640
641<pre>    &lt;one line to give the program's name and a brief idea of what it does.&gt;
642    Copyright (C) &lt;year&gt;  &lt;name of author&gt;
643
644    This program is free software: you can redistribute it and/or modify
645    it under the terms of the GNU General Public License as published by
646    the Free Software Foundation, either version 3 of the License, or
647    (at your option) any later version.
648
649    This program is distributed in the hope that it will be useful,
650    but WITHOUT ANY WARRANTY; without even the implied warranty of
651    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
652    GNU General Public License for more details.
653
654    You should have received a copy of the GNU General Public License
655    along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;.
656</pre>
657
658<p>Also add information on how to contact you by electronic and paper mail.</p>
659
660<p>If the program does terminal interaction, make it output a short
661notice like this when it starts in an interactive mode:</p>
662
663<pre>    &lt;program&gt;  Copyright (C) &lt;year&gt;  &lt;name of author&gt;
664    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
665    This is free software, and you are welcome to redistribute it
666    under certain conditions; type `show c' for details.
667</pre>
668
669<p>The hypothetical commands `show w' and `show c' should show the appropriate
670parts of the General Public License.  Of course, your program's commands
671might be different; for a GUI interface, you would use an &#8220;about box&#8221;.</p>
672
673<p>You should also get your employer (if you work as a programmer) or school,
674if any, to sign a &#8220;copyright disclaimer&#8221; for the program, if necessary.
675For more information on this, and how to apply and follow the GNU GPL, see
676&lt;http://www.gnu.org/licenses/&gt;.</p>
677
678<p>The GNU General Public License does not permit incorporating your program
679into proprietary programs.  If your program is a subroutine library, you
680may consider it more useful to permit linking proprietary applications with
681the library.  If this is what you want to do, use the GNU Lesser General
682Public License instead of this License.  But first, please read
683&lt;http://www.gnu.org/philosophy/why-not-lgpl.html&gt;.</p>
684
685
686
687</body></html>