File: 1.30.3a/LICENCE.TXT (View as HTML)

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