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1 | Valid-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later |
2 | Valid-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-only | |
3 | Valid-License-Identifier: GFDL-1.1-no-invariants-or-later | |
4 | Valid-License-Identifier: GFDL-1.1-no-invariants-only | |
5 | SPDX-URL: https://spdx.org/licenses/GFDL-1.1-no-invariants-or-later.html | |
6 | Usage-Guide: | |
7 | The GNU Free Documentation License should only be used without | |
8 | Invariant Sections, Front-Cover Texts or Back-Cover Texts. | |
9 | It should not be used for new documents, except when they are | |
10 | part of sections that are already using it (notably, the | |
11 | userspace-api media documentation). | |
12 | To use the license in source code, put the following SPDX tag/value pair | |
13 | into a comment according to the placement guidelines in the licensing | |
14 | rules documentation: | |
15 | SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later | |
16 | or | |
17 | SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-only | |
18 | or | |
19 | SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later | |
20 | or | |
21 | SPDX-License-Identifier: GFDL-1.1-no-invariants-only | |
22 | License-Text: | |
23 | GNU Free Documentation License | |
24 | Version 1.1, March 2000 | |
25 | ||
26 | Copyright (C) 2000 Free Software Foundation, Inc. | |
27 | 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
28 | Everyone is permitted to copy and distribute verbatim copies | |
29 | of this license document, but changing it is not allowed. | |
30 | ||
31 | ||
32 | 0. PREAMBLE | |
33 | ||
34 | The purpose of this License is to make a manual, textbook, or other | |
35 | written document "free" in the sense of freedom: to assure everyone | |
36 | the effective freedom to copy and redistribute it, with or without | |
37 | modifying it, either commercially or noncommercially. Secondarily, | |
38 | this License preserves for the author and publisher a way to get | |
39 | credit for their work, while not being considered responsible for | |
40 | modifications made by others. | |
41 | ||
42 | This License is a kind of "copyleft", which means that derivative | |
43 | works of the document must themselves be free in the same sense. It | |
44 | complements the GNU General Public License, which is a copyleft | |
45 | license designed for free software. | |
46 | ||
47 | We have designed this License in order to use it for manuals for free | |
48 | software, because free software needs free documentation: a free | |
49 | program should come with manuals providing the same freedoms that the | |
50 | software does. But this License is not limited to software manuals; | |
51 | it can be used for any textual work, regardless of subject matter or | |
52 | whether it is published as a printed book. We recommend this License | |
53 | principally for works whose purpose is instruction or reference. | |
54 | ||
55 | ||
56 | 1. APPLICABILITY AND DEFINITIONS | |
57 | ||
58 | This License applies to any manual or other work that contains a | |
59 | notice placed by the copyright holder saying it can be distributed | |
60 | under the terms of this License. The "Document", below, refers to any | |
61 | such manual or work. Any member of the public is a licensee, and is | |
62 | addressed as "you". | |
63 | ||
64 | A "Modified Version" of the Document means any work containing the | |
65 | Document or a portion of it, either copied verbatim, or with | |
66 | modifications and/or translated into another language. | |
67 | ||
68 | A "Secondary Section" is a named appendix or a front-matter section of | |
69 | the Document that deals exclusively with the relationship of the | |
70 | publishers or authors of the Document to the Document's overall subject | |
71 | (or to related matters) and contains nothing that could fall directly | |
72 | within that overall subject. (For example, if the Document is in part a | |
73 | textbook of mathematics, a Secondary Section may not explain any | |
74 | mathematics.) The relationship could be a matter of historical | |
75 | connection with the subject or with related matters, or of legal, | |
76 | commercial, philosophical, ethical or political position regarding | |
77 | them. | |
78 | ||
79 | The "Invariant Sections" are certain Secondary Sections whose titles | |
80 | are designated, as being those of Invariant Sections, in the notice | |
81 | that says that the Document is released under this License. | |
82 | ||
83 | The "Cover Texts" are certain short passages of text that are listed, | |
84 | as Front-Cover Texts or Back-Cover Texts, in the notice that says that | |
85 | the Document is released under this License. | |
86 | ||
87 | A "Transparent" copy of the Document means a machine-readable copy, | |
88 | represented in a format whose specification is available to the | |
89 | general public, whose contents can be viewed and edited directly and | |
90 | straightforwardly with generic text editors or (for images composed of | |
91 | pixels) generic paint programs or (for drawings) some widely available | |
92 | drawing editor, and that is suitable for input to text formatters or | |
93 | for automatic translation to a variety of formats suitable for input | |
94 | to text formatters. A copy made in an otherwise Transparent file | |
95 | format whose markup has been designed to thwart or discourage | |
96 | subsequent modification by readers is not Transparent. A copy that is | |
97 | not "Transparent" is called "Opaque". | |
98 | ||
99 | Examples of suitable formats for Transparent copies include plain | |
100 | ASCII without markup, Texinfo input format, LaTeX input format, SGML | |
101 | or XML using a publicly available DTD, and standard-conforming simple | |
102 | HTML designed for human modification. Opaque formats include | |
103 | PostScript, PDF, proprietary formats that can be read and edited only | |
104 | by proprietary word processors, SGML or XML for which the DTD and/or | |
105 | processing tools are not generally available, and the | |
106 | machine-generated HTML produced by some word processors for output | |
107 | purposes only. | |
108 | ||
109 | The "Title Page" means, for a printed book, the title page itself, | |
110 | plus such following pages as are needed to hold, legibly, the material | |
111 | this License requires to appear in the title page. For works in | |
112 | formats which do not have any title page as such, "Title Page" means | |
113 | the text near the most prominent appearance of the work's title, | |
114 | preceding the beginning of the body of the text. | |
115 | ||
116 | ||
117 | 2. VERBATIM COPYING | |
118 | ||
119 | You may copy and distribute the Document in any medium, either | |
120 | commercially or noncommercially, provided that this License, the | |
121 | copyright notices, and the license notice saying this License applies | |
122 | to the Document are reproduced in all copies, and that you add no other | |
123 | conditions whatsoever to those of this License. You may not use | |
124 | technical measures to obstruct or control the reading or further | |
125 | copying of the copies you make or distribute. However, you may accept | |
126 | compensation in exchange for copies. If you distribute a large enough | |
127 | number of copies you must also follow the conditions in section 3. | |
128 | ||
129 | You may also lend copies, under the same conditions stated above, and | |
130 | you may publicly display copies. | |
131 | ||
132 | ||
133 | 3. COPYING IN QUANTITY | |
134 | ||
135 | If you publish printed copies of the Document numbering more than 100, | |
136 | and the Document's license notice requires Cover Texts, you must enclose | |
137 | the copies in covers that carry, clearly and legibly, all these Cover | |
138 | Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on | |
139 | the back cover. Both covers must also clearly and legibly identify | |
140 | you as the publisher of these copies. The front cover must present | |
141 | the full title with all words of the title equally prominent and | |
142 | visible. You may add other material on the covers in addition. | |
143 | Copying with changes limited to the covers, as long as they preserve | |
144 | the title of the Document and satisfy these conditions, can be treated | |
145 | as verbatim copying in other respects. | |
146 | ||
147 | If the required texts for either cover are too voluminous to fit | |
148 | legibly, you should put the first ones listed (as many as fit | |
149 | reasonably) on the actual cover, and continue the rest onto adjacent | |
150 | pages. | |
151 | ||
152 | If you publish or distribute Opaque copies of the Document numbering | |
153 | more than 100, you must either include a machine-readable Transparent | |
154 | copy along with each Opaque copy, or state in or with each Opaque copy | |
155 | a publicly-accessible computer-network location containing a complete | |
156 | Transparent copy of the Document, free of added material, which the | |
157 | general network-using public has access to download anonymously at no | |
158 | charge using public-standard network protocols. If you use the latter | |
159 | option, you must take reasonably prudent steps, when you begin | |
160 | distribution of Opaque copies in quantity, to ensure that this | |
161 | Transparent copy will remain thus accessible at the stated location | |
162 | until at least one year after the last time you distribute an Opaque | |
163 | copy (directly or through your agents or retailers) of that edition to | |
164 | the public. | |
165 | ||
166 | It is requested, but not required, that you contact the authors of the | |
167 | Document well before redistributing any large number of copies, to give | |
168 | them a chance to provide you with an updated version of the Document. | |
169 | ||
170 | ||
171 | 4. MODIFICATIONS | |
172 | ||
173 | You may copy and distribute a Modified Version of the Document under | |
174 | the conditions of sections 2 and 3 above, provided that you release | |
175 | the Modified Version under precisely this License, with the Modified | |
176 | Version filling the role of the Document, thus licensing distribution | |
177 | and modification of the Modified Version to whoever possesses a copy | |
178 | of it. In addition, you must do these things in the Modified Version: | |
179 | ||
180 | A. Use in the Title Page (and on the covers, if any) a title distinct | |
181 | from that of the Document, and from those of previous versions | |
182 | (which should, if there were any, be listed in the History section | |
183 | of the Document). You may use the same title as a previous version | |
184 | if the original publisher of that version gives permission. | |
185 | B. List on the Title Page, as authors, one or more persons or entities | |
186 | responsible for authorship of the modifications in the Modified | |
187 | Version, together with at least five of the principal authors of the | |
188 | Document (all of its principal authors, if it has less than five). | |
189 | C. State on the Title page the name of the publisher of the | |
190 | Modified Version, as the publisher. | |
191 | D. Preserve all the copyright notices of the Document. | |
192 | E. Add an appropriate copyright notice for your modifications | |
193 | adjacent to the other copyright notices. | |
194 | F. Include, immediately after the copyright notices, a license notice | |
195 | giving the public permission to use the Modified Version under the | |
196 | terms of this License, in the form shown in the Addendum below. | |
197 | G. Preserve in that license notice the full lists of Invariant Sections | |
198 | and required Cover Texts given in the Document's license notice. | |
199 | H. Include an unaltered copy of this License. | |
200 | I. Preserve the section entitled "History", and its title, and add to | |
201 | it an item stating at least the title, year, new authors, and | |
202 | publisher of the Modified Version as given on the Title Page. If | |
203 | there is no section entitled "History" in the Document, create one | |
204 | stating the title, year, authors, and publisher of the Document as | |
205 | given on its Title Page, then add an item describing the Modified | |
206 | Version as stated in the previous sentence. | |
207 | J. Preserve the network location, if any, given in the Document for | |
208 | public access to a Transparent copy of the Document, and likewise | |
209 | the network locations given in the Document for previous versions | |
210 | it was based on. These may be placed in the "History" section. | |
211 | You may omit a network location for a work that was published at | |
212 | least four years before the Document itself, or if the original | |
213 | publisher of the version it refers to gives permission. | |
214 | K. In any section entitled "Acknowledgements" or "Dedications", | |
215 | preserve the section's title, and preserve in the section all the | |
216 | substance and tone of each of the contributor acknowledgements | |
217 | and/or dedications given therein. | |
218 | L. Preserve all the Invariant Sections of the Document, | |
219 | unaltered in their text and in their titles. Section numbers | |
220 | or the equivalent are not considered part of the section titles. | |
221 | M. Delete any section entitled "Endorsements". Such a section | |
222 | may not be included in the Modified Version. | |
223 | N. Do not retitle any existing section as "Endorsements" | |
224 | or to conflict in title with any Invariant Section. | |
225 | ||
226 | If the Modified Version includes new front-matter sections or | |
227 | appendices that qualify as Secondary Sections and contain no material | |
228 | copied from the Document, you may at your option designate some or all | |
229 | of these sections as invariant. To do this, add their titles to the | |
230 | list of Invariant Sections in the Modified Version's license notice. | |
231 | These titles must be distinct from any other section titles. | |
232 | ||
233 | You may add a section entitled "Endorsements", provided it contains | |
234 | nothing but endorsements of your Modified Version by various | |
235 | parties--for example, statements of peer review or that the text has | |
236 | been approved by an organization as the authoritative definition of a | |
237 | standard. | |
238 | ||
239 | You may add a passage of up to five words as a Front-Cover Text, and a | |
240 | passage of up to 25 words as a Back-Cover Text, to the end of the list | |
241 | of Cover Texts in the Modified Version. Only one passage of | |
242 | Front-Cover Text and one of Back-Cover Text may be added by (or | |
243 | through arrangements made by) any one entity. If the Document already | |
244 | includes a cover text for the same cover, previously added by you or | |
245 | by arrangement made by the same entity you are acting on behalf of, | |
246 | you may not add another; but you may replace the old one, on explicit | |
247 | permission from the previous publisher that added the old one. | |
248 | ||
249 | The author(s) and publisher(s) of the Document do not by this License | |
250 | give permission to use their names for publicity for or to assert or | |
251 | imply endorsement of any Modified Version. | |
252 | ||
253 | ||
254 | 5. COMBINING DOCUMENTS | |
255 | ||
256 | You may combine the Document with other documents released under this | |
257 | License, under the terms defined in section 4 above for modified | |
258 | versions, provided that you include in the combination all of the | |
259 | Invariant Sections of all of the original documents, unmodified, and | |
260 | list them all as Invariant Sections of your combined work in its | |
261 | license notice. | |
262 | ||
263 | The combined work need only contain one copy of this License, and | |
264 | multiple identical Invariant Sections may be replaced with a single | |
265 | copy. If there are multiple Invariant Sections with the same name but | |
266 | different contents, make the title of each such section unique by | |
267 | adding at the end of it, in parentheses, the name of the original | |
268 | author or publisher of that section if known, or else a unique number. | |
269 | Make the same adjustment to the section titles in the list of | |
270 | Invariant Sections in the license notice of the combined work. | |
271 | ||
272 | In the combination, you must combine any sections entitled "History" | |
273 | in the various original documents, forming one section entitled | |
274 | "History"; likewise combine any sections entitled "Acknowledgements", | |
275 | and any sections entitled "Dedications". You must delete all sections | |
276 | entitled "Endorsements." | |
277 | ||
278 | ||
279 | 6. COLLECTIONS OF DOCUMENTS | |
280 | ||
281 | You may make a collection consisting of the Document and other documents | |
282 | released under this License, and replace the individual copies of this | |
283 | License in the various documents with a single copy that is included in | |
284 | the collection, provided that you follow the rules of this License for | |
285 | verbatim copying of each of the documents in all other respects. | |
286 | ||
287 | You may extract a single document from such a collection, and distribute | |
288 | it individually under this License, provided you insert a copy of this | |
289 | License into the extracted document, and follow this License in all | |
290 | other respects regarding verbatim copying of that document. | |
291 | ||
292 | ||
293 | 7. AGGREGATION WITH INDEPENDENT WORKS | |
294 | ||
295 | A compilation of the Document or its derivatives with other separate | |
296 | and independent documents or works, in or on a volume of a storage or | |
297 | distribution medium, does not as a whole count as a Modified Version | |
298 | of the Document, provided no compilation copyright is claimed for the | |
299 | compilation. Such a compilation is called an "aggregate", and this | |
300 | License does not apply to the other self-contained works thus compiled | |
301 | with the Document, on account of their being thus compiled, if they | |
302 | are not themselves derivative works of the Document. | |
303 | ||
304 | If the Cover Text requirement of section 3 is applicable to these | |
305 | copies of the Document, then if the Document is less than one quarter | |
306 | of the entire aggregate, the Document's Cover Texts may be placed on | |
307 | covers that surround only the Document within the aggregate. | |
308 | Otherwise they must appear on covers around the whole aggregate. | |
309 | ||
310 | ||
311 | 8. TRANSLATION | |
312 | ||
313 | Translation is considered a kind of modification, so you may | |
314 | distribute translations of the Document under the terms of section 4. | |
315 | Replacing Invariant Sections with translations requires special | |
316 | permission from their copyright holders, but you may include | |
317 | translations of some or all Invariant Sections in addition to the | |
318 | original versions of these Invariant Sections. You may include a | |
319 | translation of this License provided that you also include the | |
320 | original English version of this License. In case of a disagreement | |
321 | between the translation and the original English version of this | |
322 | License, the original English version will prevail. | |
323 | ||
324 | ||
325 | 9. TERMINATION | |
326 | ||
327 | You may not copy, modify, sublicense, or distribute the Document except | |
328 | as expressly provided for under this License. Any other attempt to | |
329 | copy, modify, sublicense or distribute the Document is void, and will | |
330 | automatically terminate your rights under this License. However, | |
331 | parties who have received copies, or rights, from you under this | |
332 | License will not have their licenses terminated so long as such | |
333 | parties remain in full compliance. | |
334 | ||
335 | ||
336 | 10. FUTURE REVISIONS OF THIS LICENSE | |
337 | ||
338 | The Free Software Foundation may publish new, revised versions | |
339 | of the GNU Free Documentation License from time to time. Such new | |
340 | versions will be similar in spirit to the present version, but may | |
341 | differ in detail to address new problems or concerns. See | |
342 | https://www.gnu.org/licenses/. | |
343 | ||
344 | Each version of the License is given a distinguishing version number. | |
345 | If the Document specifies that a particular numbered version of this | |
346 | License "or any later version" applies to it, you have the option of | |
347 | following the terms and conditions either of that specified version or | |
348 | of any later version that has been published (not as a draft) by the | |
349 | Free Software Foundation. If the Document does not specify a version | |
350 | number of this License, you may choose any version ever published (not | |
351 | as a draft) by the Free Software Foundation. | |
352 | ||
353 | ||
354 | ADDENDUM: How to use this License for your documents | |
355 | ||
356 | To use this License in a document you have written, include a copy of | |
357 | the License in the document and put the following copyright and | |
358 | license notices just after the title page: | |
359 | ||
360 | Copyright (c) YEAR YOUR NAME. | |
361 | Permission is granted to copy, distribute and/or modify this document | |
362 | under the terms of the GNU Free Documentation License, Version 1.1 | |
363 | or any later version published by the Free Software Foundation; | |
364 | with the Invariant Sections being LIST THEIR TITLES, with the | |
365 | Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST. | |
366 | A copy of the license is included in the section entitled "GNU | |
367 | Free Documentation License". | |
368 | ||
369 | If you have no Invariant Sections, write "with no Invariant Sections" | |
370 | instead of saying which ones are invariant. If you have no | |
371 | Front-Cover Texts, write "no Front-Cover Texts" instead of | |
372 | "Front-Cover Texts being LIST"; likewise for Back-Cover Texts. | |
373 | ||
374 | If your document contains nontrivial examples of program code, we | |
375 | recommend releasing these examples in parallel under your choice of | |
376 | free software license, such as the GNU General Public License, | |
377 | to permit their use in free software. |