| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | @c The GNU Free Documentation License. | 
|  | 2 | @center Version 1.3, 3 November 2008 | 
|  | 3 |  | 
|  | 4 | @c This file is intended to be included within another document, | 
|  | 5 | @c hence no sectioning command or @node. | 
|  | 6 |  | 
|  | 7 | @display | 
|  | 8 | Copyright @copyright{} 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc. | 
|  | 9 | @uref{http://fsf.org/} | 
|  | 10 |  | 
|  | 11 | Everyone is permitted to copy and distribute verbatim copies | 
|  | 12 | of this license document, but changing it is not allowed. | 
|  | 13 | @end display | 
|  | 14 |  | 
|  | 15 | @enumerate 0 | 
|  | 16 | @item | 
|  | 17 | PREAMBLE | 
|  | 18 |  | 
|  | 19 | The purpose of this License is to make a manual, textbook, or other | 
|  | 20 | functional and useful document @dfn{free} in the sense of freedom: to | 
|  | 21 | assure everyone the effective freedom to copy and redistribute it, | 
|  | 22 | with or without modifying it, either commercially or noncommercially. | 
|  | 23 | Secondarily, this License preserves for the author and publisher a way | 
|  | 24 | to get credit for their work, while not being considered responsible | 
|  | 25 | for modifications made by others. | 
|  | 26 |  | 
|  | 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. | 
|  | 31 |  | 
|  | 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. | 
|  | 39 |  | 
|  | 40 | @item | 
|  | 41 | APPLICABILITY AND DEFINITIONS | 
|  | 42 |  | 
|  | 43 | This License applies to any manual or other work, in any medium, that | 
|  | 44 | contains a notice placed by the copyright holder saying it can be | 
|  | 45 | distributed under the terms of this License.  Such a notice grants a | 
|  | 46 | world-wide, royalty-free license, unlimited in duration, to use that | 
|  | 47 | work under the conditions stated herein.  The ``Document'', below, | 
|  | 48 | refers to any such manual or work.  Any member of the public is a | 
|  | 49 | licensee, and is addressed as ``you''.  You accept the license if you | 
|  | 50 | copy, modify or distribute the work in a way requiring permission | 
|  | 51 | under copyright law. | 
|  | 52 |  | 
|  | 53 | A ``Modified Version'' of the Document means any work containing the | 
|  | 54 | Document or a portion of it, either copied verbatim, or with | 
|  | 55 | modifications and/or translated into another language. | 
|  | 56 |  | 
|  | 57 | A ``Secondary Section'' is a named appendix or a front-matter section | 
|  | 58 | of the Document that deals exclusively with the relationship of the | 
|  | 59 | publishers or authors of the Document to the Document's overall | 
|  | 60 | subject (or to related matters) and contains nothing that could fall | 
|  | 61 | directly within that overall subject.  (Thus, if the Document is in | 
|  | 62 | part a textbook of mathematics, a Secondary Section may not explain | 
|  | 63 | any mathematics.)  The relationship could be a matter of historical | 
|  | 64 | connection with the subject or with related matters, or of legal, | 
|  | 65 | commercial, philosophical, ethical or political position regarding | 
|  | 66 | them. | 
|  | 67 |  | 
|  | 68 | The ``Invariant Sections'' are certain Secondary Sections whose titles | 
|  | 69 | are designated, as being those of Invariant Sections, in the notice | 
|  | 70 | that says that the Document is released under this License.  If a | 
|  | 71 | section does not fit the above definition of Secondary then it is not | 
|  | 72 | allowed to be designated as Invariant.  The Document may contain zero | 
|  | 73 | Invariant Sections.  If the Document does not identify any Invariant | 
|  | 74 | Sections then there are none. | 
|  | 75 |  | 
|  | 76 | The ``Cover Texts'' are certain short passages of text that are listed, | 
|  | 77 | as Front-Cover Texts or Back-Cover Texts, in the notice that says that | 
|  | 78 | the Document is released under this License.  A Front-Cover Text may | 
|  | 79 | be at most 5 words, and a Back-Cover Text may be at most 25 words. | 
|  | 80 |  | 
|  | 81 | A ``Transparent'' copy of the Document means a machine-readable copy, | 
|  | 82 | represented in a format whose specification is available to the | 
|  | 83 | general public, that is suitable for revising the document | 
|  | 84 | straightforwardly with generic text editors or (for images composed of | 
|  | 85 | pixels) generic paint programs or (for drawings) some widely available | 
|  | 86 | drawing editor, and that is suitable for input to text formatters or | 
|  | 87 | for automatic translation to a variety of formats suitable for input | 
|  | 88 | to text formatters.  A copy made in an otherwise Transparent file | 
|  | 89 | format whose markup, or absence of markup, has been arranged to thwart | 
|  | 90 | or discourage subsequent modification by readers is not Transparent. | 
|  | 91 | An image format is not Transparent if used for any substantial amount | 
|  | 92 | of text.  A copy that is not ``Transparent'' is called ``Opaque''. | 
|  | 93 |  | 
|  | 94 | Examples of suitable formats for Transparent copies include plain | 
|  | 95 | ASCII without markup, Texinfo input format, La@TeX{} input | 
|  | 96 | format, SGML or XML using a publicly available | 
|  | 97 | DTD, and standard-conforming simple HTML, | 
|  | 98 | PostScript or PDF designed for human modification.  Examples | 
|  | 99 | of transparent image formats include PNG, XCF and | 
|  | 100 | JPG.  Opaque formats include proprietary formats that can be | 
|  | 101 | read and edited only by proprietary word processors, SGML or | 
|  | 102 | XML for which the DTD and/or processing tools are | 
|  | 103 | not generally available, and the machine-generated HTML, | 
|  | 104 | PostScript or PDF produced by some word processors for | 
|  | 105 | output purposes only. | 
|  | 106 |  | 
|  | 107 | The ``Title Page'' means, for a printed book, the title page itself, | 
|  | 108 | plus such following pages as are needed to hold, legibly, the material | 
|  | 109 | this License requires to appear in the title page.  For works in | 
|  | 110 | formats which do not have any title page as such, ``Title Page'' means | 
|  | 111 | the text near the most prominent appearance of the work's title, | 
|  | 112 | preceding the beginning of the body of the text. | 
|  | 113 |  | 
|  | 114 | The ``publisher'' means any person or entity that distributes copies | 
|  | 115 | of the Document to the public. | 
|  | 116 |  | 
|  | 117 | A section ``Entitled XYZ'' means a named subunit of the Document whose | 
|  | 118 | title either is precisely XYZ or contains XYZ in parentheses following | 
|  | 119 | text that translates XYZ in another language.  (Here XYZ stands for a | 
|  | 120 | specific section name mentioned below, such as ``Acknowledgements'', | 
|  | 121 | ``Dedications'', ``Endorsements'', or ``History''.)  To ``Preserve the Title'' | 
|  | 122 | of such a section when you modify the Document means that it remains a | 
|  | 123 | section ``Entitled XYZ'' according to this definition. | 
|  | 124 |  | 
|  | 125 | The Document may include Warranty Disclaimers next to the notice which | 
|  | 126 | states that this License applies to the Document.  These Warranty | 
|  | 127 | Disclaimers are considered to be included by reference in this | 
|  | 128 | License, but only as regards disclaiming warranties: any other | 
|  | 129 | implication that these Warranty Disclaimers may have is void and has | 
|  | 130 | no effect on the meaning of this License. | 
|  | 131 |  | 
|  | 132 | @item | 
|  | 133 | VERBATIM COPYING | 
|  | 134 |  | 
|  | 135 | You may copy and distribute the Document in any medium, either | 
|  | 136 | commercially or noncommercially, provided that this License, the | 
|  | 137 | copyright notices, and the license notice saying this License applies | 
|  | 138 | to the Document are reproduced in all copies, and that you add no other | 
|  | 139 | conditions whatsoever to those of this License.  You may not use | 
|  | 140 | technical measures to obstruct or control the reading or further | 
|  | 141 | copying of the copies you make or distribute.  However, you may accept | 
|  | 142 | compensation in exchange for copies.  If you distribute a large enough | 
|  | 143 | number of copies you must also follow the conditions in section 3. | 
|  | 144 |  | 
|  | 145 | You may also lend copies, under the same conditions stated above, and | 
|  | 146 | you may publicly display copies. | 
|  | 147 |  | 
|  | 148 | @item | 
|  | 149 | COPYING IN QUANTITY | 
|  | 150 |  | 
|  | 151 | If you publish printed copies (or copies in media that commonly have | 
|  | 152 | printed covers) of the Document, numbering more than 100, and the | 
|  | 153 | Document's license notice requires Cover Texts, you must enclose the | 
|  | 154 | copies in covers that carry, clearly and legibly, all these Cover | 
|  | 155 | Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on | 
|  | 156 | the back cover.  Both covers must also clearly and legibly identify | 
|  | 157 | you as the publisher of these copies.  The front cover must present | 
|  | 158 | the full title with all words of the title equally prominent and | 
|  | 159 | visible.  You may add other material on the covers in addition. | 
|  | 160 | Copying with changes limited to the covers, as long as they preserve | 
|  | 161 | the title of the Document and satisfy these conditions, can be treated | 
|  | 162 | as verbatim copying in other respects. | 
|  | 163 |  | 
|  | 164 | If the required texts for either cover are too voluminous to fit | 
|  | 165 | legibly, you should put the first ones listed (as many as fit | 
|  | 166 | reasonably) on the actual cover, and continue the rest onto adjacent | 
|  | 167 | pages. | 
|  | 168 |  | 
|  | 169 | If you publish or distribute Opaque copies of the Document numbering | 
|  | 170 | more than 100, you must either include a machine-readable Transparent | 
|  | 171 | copy along with each Opaque copy, or state in or with each Opaque copy | 
|  | 172 | a computer-network location from which the general network-using | 
|  | 173 | public has access to download using public-standard network protocols | 
|  | 174 | a complete Transparent copy of the Document, free of added material. | 
|  | 175 | If you use the latter option, you must take reasonably prudent steps, | 
|  | 176 | when you begin distribution of Opaque copies in quantity, to ensure | 
|  | 177 | that this Transparent copy will remain thus accessible at the stated | 
|  | 178 | location until at least one year after the last time you distribute an | 
|  | 179 | Opaque copy (directly or through your agents or retailers) of that | 
|  | 180 | edition to the public. | 
|  | 181 |  | 
|  | 182 | It is requested, but not required, that you contact the authors of the | 
|  | 183 | Document well before redistributing any large number of copies, to give | 
|  | 184 | them a chance to provide you with an updated version of the Document. | 
|  | 185 |  | 
|  | 186 | @item | 
|  | 187 | MODIFICATIONS | 
|  | 188 |  | 
|  | 189 | You may copy and distribute a Modified Version of the Document under | 
|  | 190 | the conditions of sections 2 and 3 above, provided that you release | 
|  | 191 | the Modified Version under precisely this License, with the Modified | 
|  | 192 | Version filling the role of the Document, thus licensing distribution | 
|  | 193 | and modification of the Modified Version to whoever possesses a copy | 
|  | 194 | of it.  In addition, you must do these things in the Modified Version: | 
|  | 195 |  | 
|  | 196 | @enumerate A | 
|  | 197 | @item | 
|  | 198 | Use in the Title Page (and on the covers, if any) a title distinct | 
|  | 199 | from that of the Document, and from those of previous versions | 
|  | 200 | (which should, if there were any, be listed in the History section | 
|  | 201 | of the Document).  You may use the same title as a previous version | 
|  | 202 | if the original publisher of that version gives permission. | 
|  | 203 |  | 
|  | 204 | @item | 
|  | 205 | List on the Title Page, as authors, one or more persons or entities | 
|  | 206 | responsible for authorship of the modifications in the Modified | 
|  | 207 | Version, together with at least five of the principal authors of the | 
|  | 208 | Document (all of its principal authors, if it has fewer than five), | 
|  | 209 | unless they release you from this requirement. | 
|  | 210 |  | 
|  | 211 | @item | 
|  | 212 | State on the Title page the name of the publisher of the | 
|  | 213 | Modified Version, as the publisher. | 
|  | 214 |  | 
|  | 215 | @item | 
|  | 216 | Preserve all the copyright notices of the Document. | 
|  | 217 |  | 
|  | 218 | @item | 
|  | 219 | Add an appropriate copyright notice for your modifications | 
|  | 220 | adjacent to the other copyright notices. | 
|  | 221 |  | 
|  | 222 | @item | 
|  | 223 | Include, immediately after the copyright notices, a license notice | 
|  | 224 | giving the public permission to use the Modified Version under the | 
|  | 225 | terms of this License, in the form shown in the Addendum below. | 
|  | 226 |  | 
|  | 227 | @item | 
|  | 228 | Preserve in that license notice the full lists of Invariant Sections | 
|  | 229 | and required Cover Texts given in the Document's license notice. | 
|  | 230 |  | 
|  | 231 | @item | 
|  | 232 | Include an unaltered copy of this License. | 
|  | 233 |  | 
|  | 234 | @item | 
|  | 235 | Preserve the section Entitled ``History'', Preserve its Title, and add | 
|  | 236 | to it an item stating at least the title, year, new authors, and | 
|  | 237 | publisher of the Modified Version as given on the Title Page.  If | 
|  | 238 | there is no section Entitled ``History'' in the Document, create one | 
|  | 239 | stating the title, year, authors, and publisher of the Document as | 
|  | 240 | given on its Title Page, then add an item describing the Modified | 
|  | 241 | Version as stated in the previous sentence. | 
|  | 242 |  | 
|  | 243 | @item | 
|  | 244 | Preserve the network location, if any, given in the Document for | 
|  | 245 | public access to a Transparent copy of the Document, and likewise | 
|  | 246 | the network locations given in the Document for previous versions | 
|  | 247 | it was based on.  These may be placed in the ``History'' section. | 
|  | 248 | You may omit a network location for a work that was published at | 
|  | 249 | least four years before the Document itself, or if the original | 
|  | 250 | publisher of the version it refers to gives permission. | 
|  | 251 |  | 
|  | 252 | @item | 
|  | 253 | For any section Entitled ``Acknowledgements'' or ``Dedications'', Preserve | 
|  | 254 | the Title of the section, and preserve in the section all the | 
|  | 255 | substance and tone of each of the contributor acknowledgements and/or | 
|  | 256 | dedications given therein. | 
|  | 257 |  | 
|  | 258 | @item | 
|  | 259 | Preserve all the Invariant Sections of the Document, | 
|  | 260 | unaltered in their text and in their titles.  Section numbers | 
|  | 261 | or the equivalent are not considered part of the section titles. | 
|  | 262 |  | 
|  | 263 | @item | 
|  | 264 | Delete any section Entitled ``Endorsements''.  Such a section | 
|  | 265 | may not be included in the Modified Version. | 
|  | 266 |  | 
|  | 267 | @item | 
|  | 268 | Do not retitle any existing section to be Entitled ``Endorsements'' or | 
|  | 269 | to conflict in title with any Invariant Section. | 
|  | 270 |  | 
|  | 271 | @item | 
|  | 272 | Preserve any Warranty Disclaimers. | 
|  | 273 | @end enumerate | 
|  | 274 |  | 
|  | 275 | If the Modified Version includes new front-matter sections or | 
|  | 276 | appendices that qualify as Secondary Sections and contain no material | 
|  | 277 | copied from the Document, you may at your option designate some or all | 
|  | 278 | of these sections as invariant.  To do this, add their titles to the | 
|  | 279 | list of Invariant Sections in the Modified Version's license notice. | 
|  | 280 | These titles must be distinct from any other section titles. | 
|  | 281 |  | 
|  | 282 | You may add a section Entitled ``Endorsements'', provided it contains | 
|  | 283 | nothing but endorsements of your Modified Version by various | 
|  | 284 | parties---for example, statements of peer review or that the text has | 
|  | 285 | been approved by an organization as the authoritative definition of a | 
|  | 286 | standard. | 
|  | 287 |  | 
|  | 288 | You may add a passage of up to five words as a Front-Cover Text, and a | 
|  | 289 | passage of up to 25 words as a Back-Cover Text, to the end of the list | 
|  | 290 | of Cover Texts in the Modified Version.  Only one passage of | 
|  | 291 | Front-Cover Text and one of Back-Cover Text may be added by (or | 
|  | 292 | through arrangements made by) any one entity.  If the Document already | 
|  | 293 | includes a cover text for the same cover, previously added by you or | 
|  | 294 | by arrangement made by the same entity you are acting on behalf of, | 
|  | 295 | you may not add another; but you may replace the old one, on explicit | 
|  | 296 | permission from the previous publisher that added the old one. | 
|  | 297 |  | 
|  | 298 | The author(s) and publisher(s) of the Document do not by this License | 
|  | 299 | give permission to use their names for publicity for or to assert or | 
|  | 300 | imply endorsement of any Modified Version. | 
|  | 301 |  | 
|  | 302 | @item | 
|  | 303 | COMBINING DOCUMENTS | 
|  | 304 |  | 
|  | 305 | You may combine the Document with other documents released under this | 
|  | 306 | License, under the terms defined in section 4 above for modified | 
|  | 307 | versions, provided that you include in the combination all of the | 
|  | 308 | Invariant Sections of all of the original documents, unmodified, and | 
|  | 309 | list them all as Invariant Sections of your combined work in its | 
|  | 310 | license notice, and that you preserve all their Warranty Disclaimers. | 
|  | 311 |  | 
|  | 312 | The combined work need only contain one copy of this License, and | 
|  | 313 | multiple identical Invariant Sections may be replaced with a single | 
|  | 314 | copy.  If there are multiple Invariant Sections with the same name but | 
|  | 315 | different contents, make the title of each such section unique by | 
|  | 316 | adding at the end of it, in parentheses, the name of the original | 
|  | 317 | author or publisher of that section if known, or else a unique number. | 
|  | 318 | Make the same adjustment to the section titles in the list of | 
|  | 319 | Invariant Sections in the license notice of the combined work. | 
|  | 320 |  | 
|  | 321 | In the combination, you must combine any sections Entitled ``History'' | 
|  | 322 | in the various original documents, forming one section Entitled | 
|  | 323 | ``History''; likewise combine any sections Entitled ``Acknowledgements'', | 
|  | 324 | and any sections Entitled ``Dedications''.  You must delete all | 
|  | 325 | sections Entitled ``Endorsements.'' | 
|  | 326 |  | 
|  | 327 | @item | 
|  | 328 | COLLECTIONS OF DOCUMENTS | 
|  | 329 |  | 
|  | 330 | You may make a collection consisting of the Document and other documents | 
|  | 331 | released under this License, and replace the individual copies of this | 
|  | 332 | License in the various documents with a single copy that is included in | 
|  | 333 | the collection, provided that you follow the rules of this License for | 
|  | 334 | verbatim copying of each of the documents in all other respects. | 
|  | 335 |  | 
|  | 336 | You may extract a single document from such a collection, and distribute | 
|  | 337 | it individually under this License, provided you insert a copy of this | 
|  | 338 | License into the extracted document, and follow this License in all | 
|  | 339 | other respects regarding verbatim copying of that document. | 
|  | 340 |  | 
|  | 341 | @item | 
|  | 342 | AGGREGATION WITH INDEPENDENT WORKS | 
|  | 343 |  | 
|  | 344 | A compilation of the Document or its derivatives with other separate | 
|  | 345 | and independent documents or works, in or on a volume of a storage or | 
|  | 346 | distribution medium, is called an ``aggregate'' if the copyright | 
|  | 347 | resulting from the compilation is not used to limit the legal rights | 
|  | 348 | of the compilation's users beyond what the individual works permit. | 
|  | 349 | When the Document is included in an aggregate, this License does not | 
|  | 350 | apply to the other works in the aggregate which are not themselves | 
|  | 351 | derivative works of the Document. | 
|  | 352 |  | 
|  | 353 | If the Cover Text requirement of section 3 is applicable to these | 
|  | 354 | copies of the Document, then if the Document is less than one half of | 
|  | 355 | the entire aggregate, the Document's Cover Texts may be placed on | 
|  | 356 | covers that bracket the Document within the aggregate, or the | 
|  | 357 | electronic equivalent of covers if the Document is in electronic form. | 
|  | 358 | Otherwise they must appear on printed covers that bracket the whole | 
|  | 359 | aggregate. | 
|  | 360 |  | 
|  | 361 | @item | 
|  | 362 | TRANSLATION | 
|  | 363 |  | 
|  | 364 | Translation is considered a kind of modification, so you may | 
|  | 365 | distribute translations of the Document under the terms of section 4. | 
|  | 366 | Replacing Invariant Sections with translations requires special | 
|  | 367 | permission from their copyright holders, but you may include | 
|  | 368 | translations of some or all Invariant Sections in addition to the | 
|  | 369 | original versions of these Invariant Sections.  You may include a | 
|  | 370 | translation of this License, and all the license notices in the | 
|  | 371 | Document, and any Warranty Disclaimers, provided that you also include | 
|  | 372 | the original English version of this License and the original versions | 
|  | 373 | of those notices and disclaimers.  In case of a disagreement between | 
|  | 374 | the translation and the original version of this License or a notice | 
|  | 375 | or disclaimer, the original version will prevail. | 
|  | 376 |  | 
|  | 377 | If a section in the Document is Entitled ``Acknowledgements'', | 
|  | 378 | ``Dedications'', or ``History'', the requirement (section 4) to Preserve | 
|  | 379 | its Title (section 1) will typically require changing the actual | 
|  | 380 | title. | 
|  | 381 |  | 
|  | 382 | @item | 
|  | 383 | TERMINATION | 
|  | 384 |  | 
|  | 385 | You may not copy, modify, sublicense, or distribute the Document | 
|  | 386 | except as expressly provided under this License.  Any attempt | 
|  | 387 | otherwise to copy, modify, sublicense, or distribute it is void, and | 
|  | 388 | will automatically terminate your rights under this License. | 
|  | 389 |  | 
|  | 390 | However, if you cease all violation of this License, then your license | 
|  | 391 | from a particular copyright holder is reinstated (a) provisionally, | 
|  | 392 | unless and until the copyright holder explicitly and finally | 
|  | 393 | terminates your license, and (b) permanently, if the copyright holder | 
|  | 394 | fails to notify you of the violation by some reasonable means prior to | 
|  | 395 | 60 days after the cessation. | 
|  | 396 |  | 
|  | 397 | Moreover, your license from a particular copyright holder is | 
|  | 398 | reinstated permanently if the copyright holder notifies you of the | 
|  | 399 | violation by some reasonable means, this is the first time you have | 
|  | 400 | received notice of violation of this License (for any work) from that | 
|  | 401 | copyright holder, and you cure the violation prior to 30 days after | 
|  | 402 | your receipt of the notice. | 
|  | 403 |  | 
|  | 404 | Termination of your rights under this section does not terminate the | 
|  | 405 | licenses of parties who have received copies or rights from you under | 
|  | 406 | this License.  If your rights have been terminated and not permanently | 
|  | 407 | reinstated, receipt of a copy of some or all of the same material does | 
|  | 408 | not give you any rights to use it. | 
|  | 409 |  | 
|  | 410 | @item | 
|  | 411 | FUTURE REVISIONS OF THIS LICENSE | 
|  | 412 |  | 
|  | 413 | The Free Software Foundation may publish new, revised versions | 
|  | 414 | of the GNU Free Documentation License from time to time.  Such new | 
|  | 415 | versions will be similar in spirit to the present version, but may | 
|  | 416 | differ in detail to address new problems or concerns.  See | 
|  | 417 | @uref{http://www.gnu.org/copyleft/}. | 
|  | 418 |  | 
|  | 419 | Each version of the License is given a distinguishing version number. | 
|  | 420 | If the Document specifies that a particular numbered version of this | 
|  | 421 | License ``or any later version'' applies to it, you have the option of | 
|  | 422 | following the terms and conditions either of that specified version or | 
|  | 423 | of any later version that has been published (not as a draft) by the | 
|  | 424 | Free Software Foundation.  If the Document does not specify a version | 
|  | 425 | number of this License, you may choose any version ever published (not | 
|  | 426 | as a draft) by the Free Software Foundation.  If the Document | 
|  | 427 | specifies that a proxy can decide which future versions of this | 
|  | 428 | License can be used, that proxy's public statement of acceptance of a | 
|  | 429 | version permanently authorizes you to choose that version for the | 
|  | 430 | Document. | 
|  | 431 |  | 
|  | 432 | @item | 
|  | 433 | RELICENSING | 
|  | 434 |  | 
|  | 435 | ``Massive Multiauthor Collaboration Site'' (or ``MMC Site'') means any | 
|  | 436 | World Wide Web server that publishes copyrightable works and also | 
|  | 437 | provides prominent facilities for anybody to edit those works.  A | 
|  | 438 | public wiki that anybody can edit is an example of such a server.  A | 
|  | 439 | ``Massive Multiauthor Collaboration'' (or ``MMC'') contained in the | 
|  | 440 | site means any set of copyrightable works thus published on the MMC | 
|  | 441 | site. | 
|  | 442 |  | 
|  | 443 | ``CC-BY-SA'' means the Creative Commons Attribution-Share Alike 3.0 | 
|  | 444 | license published by Creative Commons Corporation, a not-for-profit | 
|  | 445 | corporation with a principal place of business in San Francisco, | 
|  | 446 | California, as well as future copyleft versions of that license | 
|  | 447 | published by that same organization. | 
|  | 448 |  | 
|  | 449 | ``Incorporate'' means to publish or republish a Document, in whole or | 
|  | 450 | in part, as part of another Document. | 
|  | 451 |  | 
|  | 452 | An MMC is ``eligible for relicensing'' if it is licensed under this | 
|  | 453 | License, and if all works that were first published under this License | 
|  | 454 | somewhere other than this MMC, and subsequently incorporated in whole | 
|  | 455 | or in part into the MMC, (1) had no cover texts or invariant sections, | 
|  | 456 | and (2) were thus incorporated prior to November 1, 2008. | 
|  | 457 |  | 
|  | 458 | The operator of an MMC Site may republish an MMC contained in the site | 
|  | 459 | under CC-BY-SA on the same site at any time before August 1, 2009, | 
|  | 460 | provided the MMC is eligible for relicensing. | 
|  | 461 |  | 
|  | 462 | @end enumerate | 
|  | 463 |  | 
|  | 464 | @page | 
|  | 465 | @heading ADDENDUM: How to use this License for your documents | 
|  | 466 |  | 
|  | 467 | To use this License in a document you have written, include a copy of | 
|  | 468 | the License in the document and put the following copyright and | 
|  | 469 | license notices just after the title page: | 
|  | 470 |  | 
|  | 471 | @smallexample | 
|  | 472 | @group | 
|  | 473 | Copyright (C)  @var{year}  @var{your name}. | 
|  | 474 | Permission is granted to copy, distribute and/or modify this document | 
|  | 475 | under the terms of the GNU Free Documentation License, Version 1.3 | 
|  | 476 | or any later version published by the Free Software Foundation; | 
|  | 477 | with no Invariant Sections, no Front-Cover Texts, and no Back-Cover | 
|  | 478 | Texts.  A copy of the license is included in the section entitled ``GNU | 
|  | 479 | Free Documentation License''. | 
|  | 480 | @end group | 
|  | 481 | @end smallexample | 
|  | 482 |  | 
|  | 483 | If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, | 
|  | 484 | replace the ``with@dots{}Texts.''@: line with this: | 
|  | 485 |  | 
|  | 486 | @smallexample | 
|  | 487 | @group | 
|  | 488 | with the Invariant Sections being @var{list their titles}, with | 
|  | 489 | the Front-Cover Texts being @var{list}, and with the Back-Cover Texts | 
|  | 490 | being @var{list}. | 
|  | 491 | @end group | 
|  | 492 | @end smallexample | 
|  | 493 |  | 
|  | 494 | If you have Invariant Sections without Cover Texts, or some other | 
|  | 495 | combination of the three, merge those two alternatives to suit the | 
|  | 496 | situation. | 
|  | 497 |  | 
|  | 498 | If your document contains nontrivial examples of program code, we | 
|  | 499 | recommend releasing these examples in parallel under your choice of | 
|  | 500 | free software license, such as the GNU General Public License, | 
|  | 501 | to permit their use in free software. | 
|  | 502 |  | 
|  | 503 | @c Local Variables: | 
|  | 504 | @c ispell-local-pdict: "ispell-dict" | 
|  | 505 | @c End: |