fdl.texi 21 KB

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  1. @node GNU Free Documentation License
  2. @appendixsec GNU Free Documentation License
  3. @cindex FDL, GNU Free Documentation License
  4. @center Version 1.2, November 2002
  5. @display
  6. Copyright @copyright{} 2000,2001,2002 Free Software Foundation, Inc.
  7. 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  8. Everyone is permitted to copy and distribute verbatim copies
  9. of this license document, but changing it is not allowed.
  10. @end display
  11. @enumerate 0
  12. @item
  13. PREAMBLE
  14. The purpose of this License is to make a manual, textbook, or other
  15. functional and useful document @dfn{free} in the sense of freedom: to
  16. assure everyone the effective freedom to copy and redistribute it,
  17. with or without modifying it, either commercially or noncommercially.
  18. Secondarily, this License preserves for the author and publisher a way
  19. to get credit for their work, while not being considered responsible
  20. for modifications made by others.
  21. This License is a kind of ``copyleft'', which means that derivative
  22. works of the document must themselves be free in the same sense. It
  23. complements the GNU General Public License, which is a copyleft
  24. license designed for free software.
  25. We have designed this License in order to use it for manuals for free
  26. software, because free software needs free documentation: a free
  27. program should come with manuals providing the same freedoms that the
  28. software does. But this License is not limited to software manuals;
  29. it can be used for any textual work, regardless of subject matter or
  30. whether it is published as a printed book. We recommend this License
  31. principally for works whose purpose is instruction or reference.
  32. @item
  33. APPLICABILITY AND DEFINITIONS
  34. This License applies to any manual or other work, in any medium, that
  35. contains a notice placed by the copyright holder saying it can be
  36. distributed under the terms of this License. Such a notice grants a
  37. world-wide, royalty-free license, unlimited in duration, to use that
  38. work under the conditions stated herein. The ``Document'', below,
  39. refers to any such manual or work. Any member of the public is a
  40. licensee, and is addressed as ``you''. You accept the license if you
  41. copy, modify or distribute the work in a way requiring permission
  42. under copyright law.
  43. A ``Modified Version'' of the Document means any work containing the
  44. Document or a portion of it, either copied verbatim, or with
  45. modifications and/or translated into another language.
  46. A ``Secondary Section'' is a named appendix or a front-matter section
  47. of the Document that deals exclusively with the relationship of the
  48. publishers or authors of the Document to the Document's overall
  49. subject (or to related matters) and contains nothing that could fall
  50. directly within that overall subject. (Thus, if the Document is in
  51. part a textbook of mathematics, a Secondary Section may not explain
  52. any mathematics.) The relationship could be a matter of historical
  53. connection with the subject or with related matters, or of legal,
  54. commercial, philosophical, ethical or political position regarding
  55. them.
  56. The ``Invariant Sections'' are certain Secondary Sections whose titles
  57. are designated, as being those of Invariant Sections, in the notice
  58. that says that the Document is released under this License. If a
  59. section does not fit the above definition of Secondary then it is not
  60. allowed to be designated as Invariant. The Document may contain zero
  61. Invariant Sections. If the Document does not identify any Invariant
  62. Sections then there are none.
  63. The ``Cover Texts'' are certain short passages of text that are listed,
  64. as Front-Cover Texts or Back-Cover Texts, in the notice that says that
  65. the Document is released under this License. A Front-Cover Text may
  66. be at most 5 words, and a Back-Cover Text may be at most 25 words.
  67. A ``Transparent'' copy of the Document means a machine-readable copy,
  68. represented in a format whose specification is available to the
  69. general public, that is suitable for revising the document
  70. straightforwardly with generic text editors or (for images composed of
  71. pixels) generic paint programs or (for drawings) some widely available
  72. drawing editor, and that is suitable for input to text formatters or
  73. for automatic translation to a variety of formats suitable for input
  74. to text formatters. A copy made in an otherwise Transparent file
  75. format whose markup, or absence of markup, has been arranged to thwart
  76. or discourage subsequent modification by readers is not Transparent.
  77. An image format is not Transparent if used for any substantial amount
  78. of text. A copy that is not ``Transparent'' is called ``Opaque''.
  79. Examples of suitable formats for Transparent copies include plain
  80. @sc{ascii} without markup, Texinfo input format, La@TeX{} input
  81. format, @acronym{SGML} or @acronym{XML} using a publicly available
  82. @acronym{DTD}, and standard-conforming simple @acronym{HTML},
  83. PostScript or @acronym{PDF} designed for human modification. Examples
  84. of transparent image formats include @acronym{PNG}, @acronym{XCF} and
  85. @acronym{JPG}. Opaque formats include proprietary formats that can be
  86. read and edited only by proprietary word processors, @acronym{SGML} or
  87. @acronym{XML} for which the @acronym{DTD} and/or processing tools are
  88. not generally available, and the machine-generated @acronym{HTML},
  89. PostScript or @acronym{PDF} produced by some word processors for
  90. output purposes only.
  91. The ``Title Page'' means, for a printed book, the title page itself,
  92. plus such following pages as are needed to hold, legibly, the material
  93. this License requires to appear in the title page. For works in
  94. formats which do not have any title page as such, ``Title Page'' means
  95. the text near the most prominent appearance of the work's title,
  96. preceding the beginning of the body of the text.
  97. A section ``Entitled XYZ'' means a named subunit of the Document whose
  98. title either is precisely XYZ or contains XYZ in parentheses following
  99. text that translates XYZ in another language. (Here XYZ stands for a
  100. specific section name mentioned below, such as ``Acknowledgements'',
  101. ``Dedications'', ``Endorsements'', or ``History''.) To ``Preserve the Title''
  102. of such a section when you modify the Document means that it remains a
  103. section ``Entitled XYZ'' according to this definition.
  104. The Document may include Warranty Disclaimers next to the notice which
  105. states that this License applies to the Document. These Warranty
  106. Disclaimers are considered to be included by reference in this
  107. License, but only as regards disclaiming warranties: any other
  108. implication that these Warranty Disclaimers may have is void and has
  109. no effect on the meaning of this License.
  110. @item
  111. VERBATIM COPYING
  112. You may copy and distribute the Document in any medium, either
  113. commercially or noncommercially, provided that this License, the
  114. copyright notices, and the license notice saying this License applies
  115. to the Document are reproduced in all copies, and that you add no other
  116. conditions whatsoever to those of this License. You may not use
  117. technical measures to obstruct or control the reading or further
  118. copying of the copies you make or distribute. However, you may accept
  119. compensation in exchange for copies. If you distribute a large enough
  120. number of copies you must also follow the conditions in section 3.
  121. You may also lend copies, under the same conditions stated above, and
  122. you may publicly display copies.
  123. @item
  124. COPYING IN QUANTITY
  125. If you publish printed copies (or copies in media that commonly have
  126. printed covers) of the Document, numbering more than 100, and the
  127. Document's license notice requires Cover Texts, you must enclose the
  128. copies in covers that carry, clearly and legibly, all these Cover
  129. Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on
  130. the back cover. Both covers must also clearly and legibly identify
  131. you as the publisher of these copies. The front cover must present
  132. the full title with all words of the title equally prominent and
  133. visible. You may add other material on the covers in addition.
  134. Copying with changes limited to the covers, as long as they preserve
  135. the title of the Document and satisfy these conditions, can be treated
  136. as verbatim copying in other respects.
  137. If the required texts for either cover are too voluminous to fit
  138. legibly, you should put the first ones listed (as many as fit
  139. reasonably) on the actual cover, and continue the rest onto adjacent
  140. pages.
  141. If you publish or distribute Opaque copies of the Document numbering
  142. more than 100, you must either include a machine-readable Transparent
  143. copy along with each Opaque copy, or state in or with each Opaque copy
  144. a computer-network location from which the general network-using
  145. public has access to download using public-standard network protocols
  146. a complete Transparent copy of the Document, free of added material.
  147. If you use the latter option, you must take reasonably prudent steps,
  148. when you begin distribution of Opaque copies in quantity, to ensure
  149. that this Transparent copy will remain thus accessible at the stated
  150. location until at least one year after the last time you distribute an
  151. Opaque copy (directly or through your agents or retailers) of that
  152. edition to the public.
  153. It is requested, but not required, that you contact the authors of the
  154. Document well before redistributing any large number of copies, to give
  155. them a chance to provide you with an updated version of the Document.
  156. @item
  157. MODIFICATIONS
  158. You may copy and distribute a Modified Version of the Document under
  159. the conditions of sections 2 and 3 above, provided that you release
  160. the Modified Version under precisely this License, with the Modified
  161. Version filling the role of the Document, thus licensing distribution
  162. and modification of the Modified Version to whoever possesses a copy
  163. of it. In addition, you must do these things in the Modified Version:
  164. @enumerate A
  165. @item
  166. 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. @item
  172. List on the Title Page, as authors, one or more persons or entities
  173. responsible for authorship of the modifications in the Modified
  174. Version, together with at least five of the principal authors of the
  175. Document (all of its principal authors, if it has fewer than five),
  176. unless they release you from this requirement.
  177. @item
  178. State on the Title page the name of the publisher of the
  179. Modified Version, as the publisher.
  180. @item
  181. Preserve all the copyright notices of the Document.
  182. @item
  183. Add an appropriate copyright notice for your modifications
  184. adjacent to the other copyright notices.
  185. @item
  186. Include, immediately after the copyright notices, a license notice
  187. giving the public permission to use the Modified Version under the
  188. terms of this License, in the form shown in the Addendum below.
  189. @item
  190. Preserve in that license notice the full lists of Invariant Sections
  191. and required Cover Texts given in the Document's license notice.
  192. @item
  193. Include an unaltered copy of this License.
  194. @item
  195. Preserve the section Entitled ``History'', Preserve its Title, and add
  196. to it an item stating at least the title, year, new authors, and
  197. publisher of the Modified Version as given on the Title Page. If
  198. there is no section Entitled ``History'' in the Document, create one
  199. stating the title, year, authors, and publisher of the Document as
  200. given on its Title Page, then add an item describing the Modified
  201. Version as stated in the previous sentence.
  202. @item
  203. Preserve the network location, if any, given in the Document for
  204. public access to a Transparent copy of the Document, and likewise
  205. the network locations given in the Document for previous versions
  206. it was based on. These may be placed in the ``History'' section.
  207. You may omit a network location for a work that was published at
  208. least four years before the Document itself, or if the original
  209. publisher of the version it refers to gives permission.
  210. @item
  211. For any section Entitled ``Acknowledgements'' or ``Dedications'', Preserve
  212. the Title of the section, and preserve in the section all the
  213. substance and tone of each of the contributor acknowledgements and/or
  214. dedications given therein.
  215. @item
  216. Preserve all the Invariant Sections of the Document,
  217. unaltered in their text and in their titles. Section numbers
  218. or the equivalent are not considered part of the section titles.
  219. @item
  220. Delete any section Entitled ``Endorsements''. Such a section
  221. may not be included in the Modified Version.
  222. @item
  223. Do not retitle any existing section to be Entitled ``Endorsements'' or
  224. to conflict in title with any Invariant Section.
  225. @item
  226. Preserve any Warranty Disclaimers.
  227. @end enumerate
  228. If the Modified Version includes new front-matter sections or
  229. appendices that qualify as Secondary Sections and contain no material
  230. copied from the Document, you may at your option designate some or all
  231. of these sections as invariant. To do this, add their titles to the
  232. list of Invariant Sections in the Modified Version's license notice.
  233. These titles must be distinct from any other section titles.
  234. You may add a section Entitled ``Endorsements'', provided it contains
  235. nothing but endorsements of your Modified Version by various
  236. parties---for example, statements of peer review or that the text has
  237. been approved by an organization as the authoritative definition of a
  238. standard.
  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. The author(s) and publisher(s) of the Document do not by this License
  249. give permission to use their names for publicity for or to assert or
  250. imply endorsement of any Modified Version.
  251. @item
  252. COMBINING DOCUMENTS
  253. You may combine the Document with other documents released under this
  254. License, under the terms defined in section 4 above for modified
  255. versions, provided that you include in the combination all of the
  256. Invariant Sections of all of the original documents, unmodified, and
  257. list them all as Invariant Sections of your combined work in its
  258. license notice, and that you preserve all their Warranty Disclaimers.
  259. The combined work need only contain one copy of this License, and
  260. multiple identical Invariant Sections may be replaced with a single
  261. copy. If there are multiple Invariant Sections with the same name but
  262. different contents, make the title of each such section unique by
  263. adding at the end of it, in parentheses, the name of the original
  264. author or publisher of that section if known, or else a unique number.
  265. Make the same adjustment to the section titles in the list of
  266. Invariant Sections in the license notice of the combined work.
  267. In the combination, you must combine any sections Entitled ``History''
  268. in the various original documents, forming one section Entitled
  269. ``History''; likewise combine any sections Entitled ``Acknowledgements'',
  270. and any sections Entitled ``Dedications''. You must delete all
  271. sections Entitled ``Endorsements.''
  272. @item
  273. COLLECTIONS OF DOCUMENTS
  274. You may make a collection consisting of the Document and other documents
  275. released under this License, and replace the individual copies of this
  276. License in the various documents with a single copy that is included in
  277. the collection, provided that you follow the rules of this License for
  278. verbatim copying of each of the documents in all other respects.
  279. You may extract a single document from such a collection, and distribute
  280. it individually under this License, provided you insert a copy of this
  281. License into the extracted document, and follow this License in all
  282. other respects regarding verbatim copying of that document.
  283. @item
  284. AGGREGATION WITH INDEPENDENT WORKS
  285. A compilation of the Document or its derivatives with other separate
  286. and independent documents or works, in or on a volume of a storage or
  287. distribution medium, is called an ``aggregate'' if the copyright
  288. resulting from the compilation is not used to limit the legal rights
  289. of the compilation's users beyond what the individual works permit.
  290. When the Document is included in an aggregate, this License does not
  291. apply to the other works in the aggregate which are not themselves
  292. derivative works of the Document.
  293. If the Cover Text requirement of section 3 is applicable to these
  294. copies of the Document, then if the Document is less than one half of
  295. the entire aggregate, the Document's Cover Texts may be placed on
  296. covers that bracket the Document within the aggregate, or the
  297. electronic equivalent of covers if the Document is in electronic form.
  298. Otherwise they must appear on printed covers that bracket the whole
  299. aggregate.
  300. @item
  301. TRANSLATION
  302. Translation is considered a kind of modification, so you may
  303. distribute translations of the Document under the terms of section 4.
  304. Replacing Invariant Sections with translations requires special
  305. permission from their copyright holders, but you may include
  306. translations of some or all Invariant Sections in addition to the
  307. original versions of these Invariant Sections. You may include a
  308. translation of this License, and all the license notices in the
  309. Document, and any Warranty Disclaimers, provided that you also include
  310. the original English version of this License and the original versions
  311. of those notices and disclaimers. In case of a disagreement between
  312. the translation and the original version of this License or a notice
  313. or disclaimer, the original version will prevail.
  314. If a section in the Document is Entitled ``Acknowledgements'',
  315. ``Dedications'', or ``History'', the requirement (section 4) to Preserve
  316. its Title (section 1) will typically require changing the actual
  317. title.
  318. @item
  319. TERMINATION
  320. You may not copy, modify, sublicense, or distribute the Document except
  321. as expressly provided for under this License. Any other attempt to
  322. copy, modify, sublicense or distribute the Document is void, and will
  323. automatically terminate your rights under this License. However,
  324. parties who have received copies, or rights, from you under this
  325. License will not have their licenses terminated so long as such
  326. parties remain in full compliance.
  327. @item
  328. FUTURE REVISIONS OF THIS LICENSE
  329. The Free Software Foundation may publish new, revised versions
  330. of the GNU Free Documentation License from time to time. Such new
  331. versions will be similar in spirit to the present version, but may
  332. differ in detail to address new problems or concerns. See
  333. @uref{http://www.gnu.org/copyleft/}.
  334. Each version of the License is given a distinguishing version number.
  335. If the Document specifies that a particular numbered version of this
  336. License ``or any later version'' applies to it, you have the option of
  337. following the terms and conditions either of that specified version or
  338. of any later version that has been published (not as a draft) by the
  339. Free Software Foundation. If the Document does not specify a version
  340. number of this License, you may choose any version ever published (not
  341. as a draft) by the Free Software Foundation.
  342. @end enumerate
  343. @page
  344. @appendixsubsec ADDENDUM: How to use this License for your documents
  345. To use this License in a document you have written, include a copy of
  346. the License in the document and put the following copyright and
  347. license notices just after the title page:
  348. @smallexample
  349. @group
  350. Copyright (C) @var{year} @var{your name}.
  351. Permission is granted to copy, distribute and/or modify this document
  352. under the terms of the GNU Free Documentation License, Version 1.2
  353. or any later version published by the Free Software Foundation;
  354. with no Invariant Sections, no Front-Cover Texts, and no Back-Cover
  355. Texts. A copy of the license is included in the section entitled ``GNU
  356. Free Documentation License''.
  357. @end group
  358. @end smallexample
  359. If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
  360. replace the ``with...Texts.'' line with this:
  361. @smallexample
  362. @group
  363. with the Invariant Sections being @var{list their titles}, with
  364. the Front-Cover Texts being @var{list}, and with the Back-Cover Texts
  365. being @var{list}.
  366. @end group
  367. @end smallexample
  368. If you have Invariant Sections without Cover Texts, or some other
  369. combination of the three, merge those two alternatives to suit the
  370. situation.
  371. If your document contains nontrivial examples of program code, we
  372. recommend releasing these examples in parallel under your choice of
  373. free software license, such as the GNU General Public License,
  374. to permit their use in free software.
  375. @c Local Variables:
  376. @c ispell-local-pdict: "ispell-dict"
  377. @c End: