2 @node GNU Free Documentation License
4 @appendix GNU Free Documentation License
5 @center Version 1.1, March 2000
8 Copyright (C) 2000, 2003 Free Software Foundation, Inc.
9 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
11 Everyone is permitted to copy and distribute verbatim copies
12 of this license document, but changing it is not allowed.
19 The purpose of this License is to make a manual, textbook, or other
20 written document ``free'' in the sense of freedom: to assure everyone
21 the effective freedom to copy and redistribute it, with or without
22 modifying it, either commercially or noncommercially. Secondarily,
23 this License preserves for the author and publisher a way to get
24 credit for their work, while not being considered responsible for
25 modifications made by others.
27 This License is a kind of ``copyleft'', which means that derivative
28 works of the document must themselves be free in the same sense. It
29 complements the GNU General Public License, which is a copyleft
30 license designed for free software.
32 We have designed this License in order to use it for manuals for free
33 software, because free software needs free documentation: a free
34 program should come with manuals providing the same freedoms that the
35 software does. But this License is not limited to software manuals;
36 it can be used for any textual work, regardless of subject matter or
37 whether it is published as a printed book. We recommend this License
38 principally for works whose purpose is instruction or reference.
42 APPLICABILITY AND DEFINITIONS
44 This License applies to any manual or other work that contains a
45 notice placed by the copyright holder saying it can be distributed
46 under the terms of this License. The ``Document'', below, refers to any
47 such manual or work. Any member of the public is a licensee, and is
50 A ``Modified Version'' of the Document means any work containing the
51 Document or a portion of it, either copied verbatim, or with
52 modifications and/or translated into another language.
54 A ``Secondary Section'' is a named appendix or a front-matter section of
55 the Document that deals exclusively with the relationship of the
56 publishers or authors of the Document to the Document's overall subject
57 (or to related matters) and contains nothing that could fall directly
58 within that overall subject. (For example, if the Document is in part a
59 textbook of mathematics, a Secondary Section may not explain any
60 mathematics.) The relationship could be a matter of historical
61 connection with the subject or with related matters, or of legal,
62 commercial, philosophical, ethical or political position regarding
65 The ``Invariant Sections'' are certain Secondary Sections whose titles
66 are designated, as being those of Invariant Sections, in the notice
67 that says that the Document is released under this License.
69 The ``Cover Texts'' are certain short passages of text that are listed,
70 as Front-Cover Texts or Back-Cover Texts, in the notice that says that
71 the Document is released under this License.
73 A ``Transparent'' copy of the Document means a machine-readable copy,
74 represented in a format whose specification is available to the
75 general public, whose contents can be viewed and edited directly and
76 straightforwardly with generic text editors or (for images composed of
77 pixels) generic paint programs or (for drawings) some widely available
78 drawing editor, and that is suitable for input to text formatters or
79 for automatic translation to a variety of formats suitable for input
80 to text formatters. A copy made in an otherwise Transparent file
81 format whose markup has been designed to thwart or discourage
82 subsequent modification by readers is not Transparent. A copy that is
83 not ``Transparent'' is called ``Opaque.''
85 Examples of suitable formats for Transparent copies include plain
86 ASCII without markup, Texinfo input format, LaTeX input format, SGML
87 or XML using a publicly available DTD, and standard-conforming simple
88 HTML designed for human modification. Opaque formats include
89 PostScript, PDF, proprietary formats that can be read and edited only
90 by proprietary word processors, SGML or XML for which the DTD and/or
91 processing tools are not generally available, and the
92 machine-generated HTML produced by some word processors for output
95 The ``Title Page'' means, for a printed book, the title page itself,
96 plus such following pages as are needed to hold, legibly, the material
97 this License requires to appear in the title page. For works in
98 formats which do not have any title page as such, ``Title Page'' means
99 the text near the most prominent appearance of the work's title,
100 preceding the beginning of the body of the text.
105 You may copy and distribute the Document in any medium, either
106 commercially or noncommercially, provided that this License, the
107 copyright notices, and the license notice saying this License applies
108 to the Document are reproduced in all copies, and that you add no other
109 conditions whatsoever to those of this License. You may not use
110 technical measures to obstruct or control the reading or further
111 copying of the copies you make or distribute. However, you may accept
112 compensation in exchange for copies. If you distribute a large enough
113 number of copies you must also follow the conditions in section 3.
115 You may also lend copies, under the same conditions stated above, and
116 you may publicly display copies.
121 If you publish printed copies of the Document numbering more than 100,
122 and the Document's license notice requires Cover Texts, you must enclose
123 the copies in covers that carry, clearly and legibly, all these Cover
124 Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on
125 the back cover. Both covers must also clearly and legibly identify
126 you as the publisher of these copies. The front cover must present
127 the full title with all words of the title equally prominent and
128 visible. You may add other material on the covers in addition.
129 Copying with changes limited to the covers, as long as they preserve
130 the title of the Document and satisfy these conditions, can be treated
131 as verbatim copying in other respects.
133 If the required texts for either cover are too voluminous to fit
134 legibly, you should put the first ones listed (as many as fit
135 reasonably) on the actual cover, and continue the rest onto adjacent
138 If you publish or distribute Opaque copies of the Document numbering
139 more than 100, you must either include a machine-readable Transparent
140 copy along with each Opaque copy, or state in or with each Opaque copy
141 a publicly-accessible computer-network location containing a complete
142 Transparent copy of the Document, free of added material, which the
143 general network-using public has access to download anonymously at no
144 charge using public-standard network protocols. If you use the latter
145 option, you must take reasonably prudent steps, when you begin
146 distribution of Opaque copies in quantity, to ensure that this
147 Transparent copy will remain thus accessible at the stated location
148 until at least one year after the last time you distribute an Opaque
149 copy (directly or through your agents or retailers) of that edition to
152 It is requested, but not required, that you contact the authors of the
153 Document well before redistributing any large number of copies, to give
154 them a chance to provide you with an updated version of the Document.
159 You may copy and distribute a Modified Version of the Document under
160 the conditions of sections 2 and 3 above, provided that you release
161 the Modified Version under precisely this License, with the Modified
162 Version filling the role of the Document, thus licensing distribution
163 and modification of the Modified Version to whoever possesses a copy
164 of it. In addition, you must do these things in the Modified Version:
166 A. Use in the Title Page (and on the covers, if any) a title distinct
167 from that of the Document, and from those of previous versions
168 (which should, if there were any, be listed in the History section
169 of the Document). You may use the same title as a previous version
170 if the original publisher of that version gives permission.@*
171 B. List on the Title Page, as authors, one or more persons or entities
172 responsible for authorship of the modifications in the Modified
173 Version, together with at least five of the principal authors of the
174 Document (all of its principal authors, if it has less than five).@*
175 C. State on the Title page the name of the publisher of the
176 Modified Version, as the publisher.@*
177 D. Preserve all the copyright notices of the Document.@*
178 E. Add an appropriate copyright notice for your modifications
179 adjacent to the other copyright notices.@*
180 F. Include, immediately after the copyright notices, a license notice
181 giving the public permission to use the Modified Version under the
182 terms of this License, in the form shown in the Addendum below.@*
183 G. Preserve in that license notice the full lists of Invariant Sections
184 and required Cover Texts given in the Document's license notice.@*
185 H. Include an unaltered copy of this License.@*
186 I. Preserve the section entitled ``History'', and its title, and add to
187 it an item stating at least the title, year, new authors, and
188 publisher of the Modified Version as given on the Title Page. If
189 there is no section entitled ``History'' in the Document, create one
190 stating the title, year, authors, and publisher of the Document as
191 given on its Title Page, then add an item describing the Modified
192 Version as stated in the previous sentence.@*
193 J. Preserve the network location, if any, given in the Document for
194 public access to a Transparent copy of the Document, and likewise
195 the network locations given in the Document for previous versions
196 it was based on. These may be placed in the ``History'' section.
197 You may omit a network location for a work that was published at
198 least four years before the Document itself, or if the original
199 publisher of the version it refers to gives permission.@*
200 K. In any section entitled ``Acknowledgements'' or ``Dedications'',
201 preserve the section's title, and preserve in the section all the
202 substance and tone of each of the contributor acknowledgements
203 and/or dedications given therein.@*
204 L. Preserve all the Invariant Sections of the Document,
205 unaltered in their text and in their titles. Section numbers
206 or the equivalent are not considered part of the section titles.@*
207 M. Delete any section entitled ``Endorsements.'' Such a section
208 may not be included in the Modified Version.@*
209 N. Do not retitle any existing section as ``Endorsements''
210 or to conflict in title with any Invariant Section.@*
212 If the Modified Version includes new front-matter sections or
213 appendices that qualify as Secondary Sections and contain no material
214 copied from the Document, you may at your option designate some or all
215 of these sections as invariant. To do this, add their titles to the
216 list of Invariant Sections in the Modified Version's license notice.
217 These titles must be distinct from any other section titles.
219 You may add a section entitled ``Endorsements'', provided it contains
220 nothing but endorsements of your Modified Version by various
221 parties--for example, statements of peer review or that the text has
222 been approved by an organization as the authoritative definition of a
225 You may add a passage of up to five words as a Front-Cover Text, and a
226 passage of up to 25 words as a Back-Cover Text, to the end of the list
227 of Cover Texts in the Modified Version. Only one passage of
228 Front-Cover Text and one of Back-Cover Text may be added by (or
229 through arrangements made by) any one entity. If the Document already
230 includes a cover text for the same cover, previously added by you or
231 by arrangement made by the same entity you are acting on behalf of,
232 you may not add another; but you may replace the old one, on explicit
233 permission from the previous publisher that added the old one.
235 The author(s) and publisher(s) of the Document do not by this License
236 give permission to use their names for publicity for or to assert or
237 imply endorsement of any Modified Version.
242 You may combine the Document with other documents released under this
243 License, under the terms defined in section 4 above for modified
244 versions, provided that you include in the combination all of the
245 Invariant Sections of all of the original documents, unmodified, and
246 list them all as Invariant Sections of your combined work in its
249 The combined work need only contain one copy of this License, and
250 multiple identical Invariant Sections may be replaced with a single
251 copy. If there are multiple Invariant Sections with the same name but
252 different contents, make the title of each such section unique by
253 adding at the end of it, in parentheses, the name of the original
254 author or publisher of that section if known, or else a unique number.
255 Make the same adjustment to the section titles in the list of
256 Invariant Sections in the license notice of the combined work.
258 In the combination, you must combine any sections entitled ``History''
259 in the various original documents, forming one section entitled
260 ``History''; likewise combine any sections entitled ``Acknowledgements'',
261 and any sections entitled ``Dedications.'' You must delete all sections
262 entitled ``Endorsements.''
265 COLLECTIONS OF DOCUMENTS
267 You may make a collection consisting of the Document and other documents
268 released under this License, and replace the individual copies of this
269 License in the various documents with a single copy that is included in
270 the collection, provided that you follow the rules of this License for
271 verbatim copying of each of the documents in all other respects.
273 You may extract a single document from such a collection, and distribute
274 it individually under this License, provided you insert a copy of this
275 License into the extracted document, and follow this License in all
276 other respects regarding verbatim copying of that document.
279 AGGREGATION WITH INDEPENDENT WORKS
281 A compilation of the Document or its derivatives with other separate
282 and independent documents or works, in or on a volume of a storage or
283 distribution medium, does not as a whole count as a Modified Version
284 of the Document, provided no compilation copyright is claimed for the
285 compilation. Such a compilation is called an ``aggregate'', and this
286 License does not apply to the other self-contained works thus compiled
287 with the Document, on account of their being thus compiled, if they
288 are not themselves derivative works of the Document.
290 If the Cover Text requirement of section 3 is applicable to these
291 copies of the Document, then if the Document is less than one quarter
292 of the entire aggregate, the Document's Cover Texts may be placed on
293 covers that surround only the Document within the aggregate.
294 Otherwise they must appear on covers around the whole aggregate.
299 Translation is considered a kind of modification, so you may
300 distribute translations of the Document under the terms of section 4.
301 Replacing Invariant Sections with translations requires special
302 permission from their copyright holders, but you may include
303 translations of some or all Invariant Sections in addition to the
304 original versions of these Invariant Sections. You may include a
305 translation of this License provided that you also include the
306 original English version of this License. In case of a disagreement
307 between the translation and the original English version of this
308 License, the original English version will prevail.
313 You may not copy, modify, sublicense, or distribute the Document except
314 as expressly provided for under this License. Any other attempt to
315 copy, modify, sublicense or distribute the Document is void, and will
316 automatically terminate your rights under this License. However,
317 parties who have received copies, or rights, from you under this
318 License will not have their licenses terminated so long as such
319 parties remain in full compliance.
322 FUTURE REVISIONS OF THIS LICENSE
324 The Free Software Foundation may publish new, revised versions
325 of the GNU Free Documentation License from time to time. Such new
326 versions will be similar in spirit to the present version, but may
327 differ in detail to address new problems or concerns. See
328 http://www.gnu.org/copyleft/.
330 Each version of the License is given a distinguishing version number.
331 If the Document specifies that a particular numbered version of this
332 License ``or any later version'' applies to it, you have the option of
333 following the terms and conditions either of that specified version or
334 of any later version that has been published (not as a draft) by the
335 Free Software Foundation. If the Document does not specify a version
336 number of this License, you may choose any version ever published (not
337 as a draft) by the Free Software Foundation.
341 @unnumberedsec ADDENDUM: How to use this License for your documents
343 To use this License in a document you have written, include a copy of
344 the License in the document and put the following copyright and
345 license notices just after the title page:
349 Copyright (C) @var{year} @var{your name}.
350 Permission is granted to copy, distribute and/or modify this document
351 under the terms of the GNU Free Documentation License, Version 1.1
352 or any later version published by the Free Software Foundation;
353 with the Invariant Sections being @var{list their titles}, with the
354 Front-Cover Texts being @var{list}, and with the Back-Cover Texts being @var{list}.
355 A copy of the license is included in the section entitled "GNU
356 Free Documentation License."
360 If you have no Invariant Sections, write ``with no Invariant Sections''
361 instead of saying which ones are invariant. If you have no
362 Front-Cover Texts, write ``no Front-Cover Texts'' instead of
363 ``Front-Cover Texts being @var{list}''; likewise for Back-Cover Texts.
365 If your document contains nontrivial examples of program code, we
366 recommend releasing these examples in parallel under your choice of
367 free software license, such as the GNU General Public License,
368 to permit their use in free software.