2 @appendix GNU Free Documentation License
4 @cindex FDL, GNU Free Documentation License
5 @center Version 1.1, March 2000
8 Copyright @copyright{} 2000 Free Software Foundation, Inc.
9 59 Temple Place, Suite 330, Boston, MA 02111-1307, 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 @dfn{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.
41 APPLICABILITY AND DEFINITIONS
43 This License applies to any manual or other work that contains a
44 notice placed by the copyright holder saying it can be distributed
45 under the terms of this License. The ``Document'', below, refers to any
46 such manual or work. Any member of the public is a licensee, and is
49 A ``Modified Version'' of the Document means any work containing the
50 Document or a portion of it, either copied verbatim, or with
51 modifications and/or translated into another language.
53 A ``Secondary Section'' is a named appendix or a front-matter section of
54 the Document that deals exclusively with the relationship of the
55 publishers or authors of the Document to the Document's overall subject
56 (or to related matters) and contains nothing that could fall directly
57 within that overall subject. (For example, if the Document is in part a
58 textbook of mathematics, a Secondary Section may not explain any
59 mathematics.) The relationship could be a matter of historical
60 connection with the subject or with related matters, or of legal,
61 commercial, philosophical, ethical or political position regarding
64 The ``Invariant Sections'' are certain Secondary Sections whose titles
65 are designated, as being those of Invariant Sections, in the notice
66 that says that the Document is released under this License.
68 The ``Cover Texts'' are certain short passages of text that are listed,
69 as Front-Cover Texts or Back-Cover Texts, in the notice that says that
70 the Document is released under this License.
72 A ``Transparent'' copy of the Document means a machine-readable copy,
73 represented in a format whose specification is available to the
74 general public, whose contents can be viewed and edited directly and
75 straightforwardly with generic text editors or (for images composed of
76 pixels) generic paint programs or (for drawings) some widely available
77 drawing editor, and that is suitable for input to text formatters or
78 for automatic translation to a variety of formats suitable for input
79 to text formatters. A copy made in an otherwise Transparent file
80 format whose markup has been designed to thwart or discourage
81 subsequent modification by readers is not Transparent. A copy that is
82 not ``Transparent'' is called ``Opaque''.
84 Examples of suitable formats for Transparent copies include plain
85 @sc{ascii} without markup, Texinfo input format, La@TeX{} input format,
86 @acronym{SGML} or @acronym{XML} using a publicly available
87 @acronym{DTD}, and standard-conforming simple @acronym{HTML} designed
88 for human modification. Opaque formats include PostScript,
89 @acronym{PDF}, proprietary formats that can be read and edited only by
90 proprietary word processors, @acronym{SGML} or @acronym{XML} for which
91 the @acronym{DTD} and/or processing tools are not generally available,
92 and the machine-generated @acronym{HTML} produced by some word
93 processors for output purposes only.
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:
168 Use in the Title Page (and on the covers, if any) a title distinct
169 from that of the Document, and from those of previous versions
170 (which should, if there were any, be listed in the History section
171 of the Document). You may use the same title as a previous version
172 if the original publisher of that version gives permission.
175 List on the Title Page, as authors, one or more persons or entities
176 responsible for authorship of the modifications in the Modified
177 Version, together with at least five of the principal authors of the
178 Document (all of its principal authors, if it has less than five).
181 State on the Title page the name of the publisher of the
182 Modified Version, as the publisher.
185 Preserve all the copyright notices of the Document.
188 Add an appropriate copyright notice for your modifications
189 adjacent to the other copyright notices.
192 Include, immediately after the copyright notices, a license notice
193 giving the public permission to use the Modified Version under the
194 terms of this License, in the form shown in the Addendum below.
197 Preserve in that license notice the full lists of Invariant Sections
198 and required Cover Texts given in the Document's license notice.
201 Include an unaltered copy of this License.
204 Preserve the section entitled ``History'', and its title, and add to
205 it an item stating at least the title, year, new authors, and
206 publisher of the Modified Version as given on the Title Page. If
207 there is no section entitled ``History'' in the Document, create one
208 stating the title, year, authors, and publisher of the Document as
209 given on its Title Page, then add an item describing the Modified
210 Version as stated in the previous sentence.
213 Preserve the network location, if any, given in the Document for
214 public access to a Transparent copy of the Document, and likewise
215 the network locations given in the Document for previous versions
216 it was based on. These may be placed in the ``History'' section.
217 You may omit a network location for a work that was published at
218 least four years before the Document itself, or if the original
219 publisher of the version it refers to gives permission.
222 In any section entitled ``Acknowledgments'' or ``Dedications'',
223 preserve the section's title, and preserve in the section all the
224 substance and tone of each of the contributor acknowledgments
225 and/or dedications given therein.
228 Preserve all the Invariant Sections of the Document,
229 unaltered in their text and in their titles. Section numbers
230 or the equivalent are not considered part of the section titles.
233 Delete any section entitled ``Endorsements''. Such a section
234 may not be included in the Modified Version.
237 Do not retitle any existing section as ``Endorsements''
238 or to conflict in title with any Invariant Section.
241 If the Modified Version includes new front-matter sections or
242 appendices that qualify as Secondary Sections and contain no material
243 copied from the Document, you may at your option designate some or all
244 of these sections as invariant. To do this, add their titles to the
245 list of Invariant Sections in the Modified Version's license notice.
246 These titles must be distinct from any other section titles.
248 You may add a section entitled ``Endorsements'', provided it contains
249 nothing but endorsements of your Modified Version by various
250 parties---for example, statements of peer review or that the text has
251 been approved by an organization as the authoritative definition of a
254 You may add a passage of up to five words as a Front-Cover Text, and a
255 passage of up to 25 words as a Back-Cover Text, to the end of the list
256 of Cover Texts in the Modified Version. Only one passage of
257 Front-Cover Text and one of Back-Cover Text may be added by (or
258 through arrangements made by) any one entity. If the Document already
259 includes a cover text for the same cover, previously added by you or
260 by arrangement made by the same entity you are acting on behalf of,
261 you may not add another; but you may replace the old one, on explicit
262 permission from the previous publisher that added the old one.
264 The author(s) and publisher(s) of the Document do not by this License
265 give permission to use their names for publicity for or to assert or
266 imply endorsement of any Modified Version.
271 You may combine the Document with other documents released under this
272 License, under the terms defined in section 4 above for modified
273 versions, provided that you include in the combination all of the
274 Invariant Sections of all of the original documents, unmodified, and
275 list them all as Invariant Sections of your combined work in its
278 The combined work need only contain one copy of this License, and
279 multiple identical Invariant Sections may be replaced with a single
280 copy. If there are multiple Invariant Sections with the same name but
281 different contents, make the title of each such section unique by
282 adding at the end of it, in parentheses, the name of the original
283 author or publisher of that section if known, or else a unique number.
284 Make the same adjustment to the section titles in the list of
285 Invariant Sections in the license notice of the combined work.
287 In the combination, you must combine any sections entitled ``History''
288 in the various original documents, forming one section entitled
289 ``History''; likewise combine any sections entitled ``Acknowledgments'',
290 and any sections entitled ``Dedications''. You must delete all sections
291 entitled ``Endorsements.''
294 COLLECTIONS OF DOCUMENTS
296 You may make a collection consisting of the Document and other documents
297 released under this License, and replace the individual copies of this
298 License in the various documents with a single copy that is included in
299 the collection, provided that you follow the rules of this License for
300 verbatim copying of each of the documents in all other respects.
302 You may extract a single document from such a collection, and distribute
303 it individually under this License, provided you insert a copy of this
304 License into the extracted document, and follow this License in all
305 other respects regarding verbatim copying of that document.
308 AGGREGATION WITH INDEPENDENT WORKS
310 A compilation of the Document or its derivatives with other separate
311 and independent documents or works, in or on a volume of a storage or
312 distribution medium, does not as a whole count as a Modified Version
313 of the Document, provided no compilation copyright is claimed for the
314 compilation. Such a compilation is called an ``aggregate'', and this
315 License does not apply to the other self-contained works thus compiled
316 with the Document, on account of their being thus compiled, if they
317 are not themselves derivative works of the Document.
319 If the Cover Text requirement of section 3 is applicable to these
320 copies of the Document, then if the Document is less than one quarter
321 of the entire aggregate, the Document's Cover Texts may be placed on
322 covers that surround only the Document within the aggregate.
323 Otherwise they must appear on covers around the whole aggregate.
328 Translation is considered a kind of modification, so you may
329 distribute translations of the Document under the terms of section 4.
330 Replacing Invariant Sections with translations requires special
331 permission from their copyright holders, but you may include
332 translations of some or all Invariant Sections in addition to the
333 original versions of these Invariant Sections. You may include a
334 translation of this License provided that you also include the
335 original English version of this License. In case of a disagreement
336 between the translation and the original English version of this
337 License, the original English version will prevail.
342 You may not copy, modify, sublicense, or distribute the Document except
343 as expressly provided for under this License. Any other attempt to
344 copy, modify, sublicense or distribute the Document is void, and will
345 automatically terminate your rights under this License. However,
346 parties who have received copies, or rights, from you under this
347 License will not have their licenses terminated so long as such
348 parties remain in full compliance.
351 FUTURE REVISIONS OF THIS LICENSE
353 The Free Software Foundation may publish new, revised versions
354 of the GNU Free Documentation License from time to time. Such new
355 versions will be similar in spirit to the present version, but may
356 differ in detail to address new problems or concerns. See
357 @uref{http://www.gnu.org/copyleft/}.
359 Each version of the License is given a distinguishing version number.
360 If the Document specifies that a particular numbered version of this
361 License ``or any later version'' applies to it, you have the option of
362 following the terms and conditions either of that specified version or
363 of any later version that has been published (not as a draft) by the
364 Free Software Foundation. If the Document does not specify a version
365 number of this License, you may choose any version ever published (not
366 as a draft) by the Free Software Foundation.
370 @appendixsubsec ADDENDUM: How to use this License for your documents
372 To use this License in a document you have written, include a copy of
373 the License in the document and put the following copyright and
374 license notices just after the title page:
378 Copyright (C) @var{year} @var{your name}.
379 Permission is granted to copy, distribute and/or modify this document
380 under the terms of the GNU Free Documentation License, Version 1.1
381 or any later version published by the Free Software Foundation;
382 with the Invariant Sections being @var{list their titles}, with the
383 Front-Cover Texts being @var{list}, and with the Back-Cover Texts being @var{list}.
384 A copy of the license is included in the section entitled ``GNU
385 Free Documentation License''.
389 If you have no Invariant Sections, write ``with no Invariant Sections''
390 instead of saying which ones are invariant. If you have no
391 Front-Cover Texts, write ``no Front-Cover Texts'' instead of
392 ``Front-Cover Texts being @var{list}''; likewise for Back-Cover Texts.
394 If your document contains nontrivial examples of program code, we
395 recommend releasing these examples in parallel under your choice of
396 free software license, such as the GNU General Public License,
397 to permit their use in free software.
400 @c ispell-local-pdict: "ispell-dict"