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| 1 <appendix id="appendix.gfdl-1.2"> | |
| 2 <?dbhtml filename="appendix_gfdl.html"?> | |
| 3 <title>GNU Free Documentation License</title> | |
| 4 <para> | |
| 5 Copyright (C) 2000, 2001, 2002 Free Software Foundation, | |
| 6 <abbrev>Inc.</abbrev> 51 Franklin <abbrev>St</abbrev>, Fifth Floor, | |
| 7 Boston, <abbrev>MA</abbrev> 02110-1301 <abbrev | |
| 8 role="initialism">USA</abbrev>. Everyone is permitted to copy and | |
| 9 distribute verbatim copies of this license document, but changing it is | |
| 10 not allowed. | |
| 11 </para> | |
| 12 <bridgehead id="fdl-1-preamble" renderas="sect1"> | |
| 13 0. PREAMBLE | |
| 14 </bridgehead> | |
| 15 <para> | |
| 16 The purpose of this License is to make a manual, textbook, or other | |
| 17 functional and useful document "free" in the sense of freedom: to assure | |
| 18 everyone the effective freedom to copy and redistribute it, with or | |
| 19 without modifying it, either commercially or noncommercially. | |
| 20 Secondarily, this License preserves for the author and publisher a way to | |
| 21 get credit for their work, while not being considered responsible for | |
| 22 modifications made by others. | |
| 23 </para> | |
| 24 <para> | |
| 25 This License is a kind of "copyleft", which means that derivative works of | |
| 26 the document must themselves be free in the same sense. It complements | |
| 27 the GNU General Public License, which is a copyleft license designed for | |
| 28 free software. | |
| 29 </para> | |
| 30 <para> | |
| 31 We have designed this License in order to use it for manuals for free | |
| 32 software, because free software needs free documentation: a free program | |
| 33 should come with manuals providing the same freedoms that the software | |
| 34 does. But this License is not limited to software manuals; it can be used | |
| 35 for any textual work, regardless of subject matter or whether it is | |
| 36 published as a printed book. We recommend this License principally for | |
| 37 works whose purpose is instruction or reference.</para> | |
| 38 <bridgehead id="fdl-1-definitions" renderas="sect1"> | |
| 39 1. APPLICABILITY AND DEFINITIONS | |
| 40 </bridgehead> | |
| 41 <para> | |
| 42 This License applies to any manual or other work, in any medium, that | |
| 43 contains a notice placed by the copyright holder saying it can be | |
| 44 distributed under the terms of this License. Such a notice grants a | |
| 45 world-wide, royalty-free license, unlimited in duration, to use that work | |
| 46 under the conditions stated herein. The "Document", below, refers to any | |
| 47 such manual or work. Any member of the public is a licensee, and is | |
| 48 addressed as "you". You accept the license if you copy, modify or | |
| 49 distribute the work in a way requiring permission under copyright | |
| 50 law. | |
| 51 </para> | |
| 52 <para> | |
| 53 A "Modified Version" of the Document means any work containing the | |
| 54 Document or a portion of it, either copied verbatim, or with modifications | |
| 55 and/or translated into another language. | |
| 56 </para> | |
| 57 <para> | |
| 58 A "Secondary Section" is a named appendix or a front-matter section of the | |
| 59 Document that deals exclusively with the relationship of the publishers or | |
| 60 authors of the Document to the Document's overall subject (or to related | |
| 61 matters) and contains nothing that could fall directly within that overall | |
| 62 subject. (Thus, if the Document is in part a textbook of mathematics, a | |
| 63 Secondary Section may not explain any mathematics.) The relationship | |
| 64 could be a matter of historical connection with the subject or with | |
| 65 related matters, or of legal, commercial, philosophical, ethical or | |
| 66 political position regarding them. | |
| 67 </para> | |
| 68 <para> | |
| 69 The "Invariant Sections" are certain Secondary Sections whose titles are | |
| 70 designated, as being those of Invariant Sections, in the notice that says | |
| 71 that the Document is released under this License. If a section does not | |
| 72 fit the above definition of Secondary then it is not allowed to be | |
| 73 designated as Invariant. The Document may contain zero Invariant | |
| 74 Sections. If the Document does not identify any Invariant Sections then | |
| 75 there are none. | |
| 76 </para> | |
| 77 <para> | |
| 78 The "Cover Texts" are certain short passages of text that are listed, as | |
| 79 Front-Cover Texts or Back-Cover Texts, in the notice that says that the | |
| 80 Document is released under this License. A Front-Cover Text may be at | |
| 81 most 5 words, and a Back-Cover Text may be at most 25 words. | |
| 82 </para> | |
| 83 <para> | |
| 84 A "Transparent" copy of the Document means a machine-readable copy, | |
| 85 represented in a format whose specification is available to the general | |
| 86 public, that is suitable for revising the document straightforwardly with | |
| 87 generic text editors or (for images composed of pixels) generic paint | |
| 88 programs or (for drawings) some widely available drawing editor, and that | |
| 89 is suitable for input to text formatters or for automatic translation to a | |
| 90 variety of formats suitable for input to text formatters. A copy made in | |
| 91 an otherwise Transparent file format whose markup, or absence of markup, | |
| 92 has been arranged to thwart or discourage subsequent modification by | |
| 93 readers is not Transparent. An image format is not Transparent if used | |
| 94 for any substantial amount of text. A copy that is not "Transparent" is | |
| 95 called "Opaque". | |
| 96 </para> | |
| 97 <para> | |
| 98 Examples of suitable formats for Transparent copies include plain ASCII | |
| 99 without markup, Texinfo input format, LaTeX input format, SGML or XML | |
| 100 using a publicly available DTD, and standard-conforming simple HTML, | |
| 101 PostScript or PDF designed for human modification. Examples of | |
| 102 transparent image formats include PNG, XCF and JPG. Opaque formats | |
| 103 include proprietary formats that can be read and edited only by | |
| 104 proprietary word processors, SGML or XML for which the DTD and/or | |
| 105 processing tools are not generally available, and the machine-generated | |
| 106 HTML, PostScript or PDF produced by some word processors for output | |
| 107 purposes only. | |
| 108 </para> | |
| 109 <para> | |
| 110 The "Title Page" means, for a printed book, the title page itself, plus | |
| 111 such following pages as are needed to hold, legibly, the material this | |
| 112 License requires to appear in the title page. For works in formats which | |
| 113 do not have any title page as such, "Title Page" means the text near the | |
| 114 most prominent appearance of the work's title, preceding the beginning of | |
| 115 the body of the text. | |
| 116 </para> | |
| 117 <para> | |
| 118 A section "Entitled XYZ" means a named subunit of the Document whose title | |
| 119 either is precisely XYZ or contains XYZ in parentheses following text that | |
| 120 translates XYZ in another language. (Here XYZ stands for a specific | |
| 121 section name mentioned below, such as "Acknowledgements", "Dedications", | |
| 122 "Endorsements", or "History".) To "Preserve the Title" of such a section | |
| 123 when you modify the Document means that it remains a section "Entitled | |
| 124 XYZ" according to this definition. | |
| 125 </para> | |
| 126 <para> | |
| 127 The Document may include Warranty Disclaimers next to the notice which | |
| 128 states that this License applies to the Document. These Warranty | |
| 129 Disclaimers are considered to be included by reference in this License, | |
| 130 but only as regards disclaiming warranties: any other implication that | |
| 131 these Warranty Disclaimers may have is void and has no effect on the | |
| 132 meaning of this License. | |
| 133 </para> | |
| 134 <bridgehead id="VerbatimCopying" renderas="sect1"> | |
| 135 2. VERBATIM COPYING | |
| 136 </bridgehead> | |
| 137 <para> | |
| 138 You may copy and distribute the Document in any medium, either | |
| 139 commercially or noncommercially, provided that this License, the copyright | |
| 140 notices, and the license notice saying this License applies to the | |
| 141 Document are reproduced in all copies, and that you add no other | |
| 142 conditions whatsoever to those of this License. You may not use technical | |
| 143 measures to obstruct or control the reading or further copying of the | |
| 144 copies you make or distribute. However, you may accept compensation in | |
| 145 exchange for copies. If you distribute a large enough number of copies | |
| 146 you must also follow the conditions in section 3. | |
| 147 </para> | |
| 148 <para> | |
| 149 You may also lend copies, under the same conditions stated above, and you | |
| 150 may publicly display copies. | |
| 151 </para> | |
| 152 <bridgehead id="QuantityCopying" renderas="sect1"> | |
| 153 3. COPYING IN QUANTITY | |
| 154 </bridgehead> | |
| 155 <para> | |
| 156 If you publish printed copies (or copies in media that commonly have | |
| 157 printed covers) of the Document, numbering more than 100, and the | |
| 158 Document's license notice requires Cover Texts, you must enclose the | |
| 159 copies in covers that carry, clearly and legibly, all these Cover Texts: | |
| 160 Front-Cover Texts on the front cover, and Back-Cover Texts on the back | |
| 161 cover. Both covers must also clearly and legibly identify you as the | |
| 162 publisher of these copies. The front cover must present the full title | |
| 163 with all words of the title equally prominent and visible. You may add | |
| 164 other material on the covers in addition. Copying with changes limited to | |
| 165 the covers, as long as they preserve the title of the Document and satisfy | |
| 166 these conditions, can be treated as verbatim copying in other | |
| 167 respects. | |
| 168 </para> | |
| 169 <para> | |
| 170 If the required texts for either cover are too voluminous to fit legibly, | |
| 171 you should put the first ones listed (as many as fit reasonably) on the | |
| 172 actual cover, and continue the rest onto adjacent pages. | |
| 173 </para> | |
| 174 <para> | |
| 175 If you publish or distribute Opaque copies of the Document numbering more | |
| 176 than 100, you must either include a machine-readable Transparent copy | |
| 177 along with each Opaque copy, or state in or with each Opaque copy a | |
| 178 computer-network location from which the general network-using public has | |
| 179 access to download using public-standard network protocols a complete | |
| 180 Transparent copy of the Document, free of added material. If you use the | |
| 181 latter option, you must take reasonably prudent steps, when you begin | |
| 182 distribution of Opaque copies in quantity, to ensure that this Transparent | |
| 183 copy will remain thus accessible at the stated location until at least one | |
| 184 year after the last time you distribute an Opaque copy (directly or | |
| 185 through your agents or retailers) of that edition to the public. | |
| 186 </para> | |
| 187 <para> | |
| 188 It is requested, but not required, that you contact the authors of the | |
| 189 Document well before redistributing any large number of copies, to give | |
| 190 them a chance to provide you with an updated version of the | |
| 191 Document. | |
| 192 </para> | |
| 193 <bridgehead id="Modifications" renderas="sect1"> | |
| 194 4. MODIFICATIONS | |
| 195 </bridgehead> | |
| 196 <para> | |
| 197 You may copy and distribute a Modified Version of the Document under the | |
| 198 conditions of sections 2 and 3 above, provided that you release the | |
| 199 Modified Version under precisely this License, with the Modified Version | |
| 200 filling the role of the Document, thus licensing distribution and | |
| 201 modification of the Modified Version to whoever possesses a copy of it. | |
| 202 In addition, you must do these things in the Modified Version: | |
| 203 </para> | |
| 204 <orderedlist numeration="upperalpha"> | |
| 205 <listitem> | |
| 206 <simpara> | |
| 207 Use in the Title Page (and on the covers, if any) a title distinct | |
| 208 from that of the Document, and from those of previous versions (which | |
| 209 should, if there were any, be listed in the History section of the | |
| 210 Document). You may use the same title as a previous version if the | |
| 211 original publisher of that version gives permission. | |
| 212 </simpara> | |
| 213 </listitem> | |
| 214 <listitem> | |
| 215 <simpara> | |
| 216 List on the Title Page, as authors, one or more persons or entities | |
| 217 responsible for authorship of the modifications in the Modified | |
| 218 Version, together with at least five of the principal authors of the | |
| 219 Document (all of its principal authors, if it has fewer than five), | |
| 220 unless they release you from this requirement. | |
| 221 </simpara> | |
| 222 </listitem> | |
| 223 <listitem> | |
| 224 <simpara> | |
| 225 State on the Title page the name of the publisher of the Modified | |
| 226 Version, as the publisher. | |
| 227 </simpara> | |
| 228 </listitem> | |
| 229 <listitem> | |
| 230 <simpara> | |
| 231 Preserve all the copyright notices of the Document. | |
| 232 </simpara> | |
| 233 </listitem> | |
| 234 <listitem> | |
| 235 <simpara> | |
| 236 Add an appropriate copyright notice for your modifications adjacent to | |
| 237 the other copyright notices. | |
| 238 </simpara> | |
| 239 </listitem> | |
| 240 <listitem> | |
| 241 <simpara> | |
| 242 Include, immediately after the copyright notices, a license notice | |
| 243 giving the public permission to use the Modified Version under the | |
| 244 terms of this License, in the form shown in the Addendum below. | |
| 245 </simpara> | |
| 246 </listitem> | |
| 247 <listitem> | |
| 248 <simpara> | |
| 249 Preserve in that license notice the full lists of Invariant Sections | |
| 250 and required Cover Texts given in the Document's license notice. | |
| 251 </simpara> | |
| 252 </listitem> | |
| 253 <listitem> | |
| 254 <simpara> | |
| 255 Include an unaltered copy of this License. | |
| 256 </simpara> | |
| 257 </listitem> | |
| 258 <listitem> | |
| 259 <simpara> | |
| 260 Preserve the section Entitled "History", Preserve its Title, and add | |
| 261 to it an item stating at least the title, year, new authors, and | |
| 262 publisher of the Modified Version as given on the Title Page. If | |
| 263 there is no section Entitled "History" in the Document, create one | |
| 264 stating the title, year, authors, and publisher of the Document as | |
| 265 given on its Title Page, then add an item describing the Modified | |
| 266 Version as stated in the previous sentence. | |
| 267 </simpara> | |
| 268 </listitem> | |
| 269 <listitem> | |
| 270 <simpara> | |
| 271 Preserve the network location, if any, given in the Document for | |
| 272 public access to a Transparent copy of the Document, and likewise the | |
| 273 network locations given in the Document for previous versions it was | |
| 274 based on. These may be placed in the "History" section. You may omit | |
| 275 a network location for a work that was published at least four years | |
| 276 before the Document itself, or if the original publisher of the | |
| 277 version it refers to gives permission. | |
| 278 </simpara> | |
| 279 </listitem> | |
| 280 <listitem> | |
| 281 <simpara> | |
| 282 For any section Entitled "Acknowledgements" or "Dedications", Preserve | |
| 283 the Title of the section, and preserve in the section all the | |
| 284 substance and tone of each of the contributor acknowledgements and/or | |
| 285 dedications given therein. | |
| 286 </simpara> | |
| 287 </listitem> | |
| 288 <listitem> | |
| 289 <simpara> | |
| 290 Preserve all the Invariant Sections of the Document, unaltered in | |
| 291 their text and in their titles. Section numbers or the equivalent are | |
| 292 not considered part of the section titles. | |
| 293 </simpara> | |
| 294 </listitem> | |
| 295 <listitem> | |
| 296 <simpara> | |
| 297 Delete any section Entitled "Endorsements". Such a section may not be | |
| 298 included in the Modified Version. | |
| 299 </simpara> | |
| 300 </listitem> | |
| 301 <listitem> | |
| 302 <simpara> | |
| 303 Do not retitle any existing section to be Entitled "Endorsements" or | |
| 304 to conflict in title with any Invariant Section. | |
| 305 </simpara> | |
| 306 </listitem> | |
| 307 <listitem> | |
| 308 <simpara> | |
| 309 Preserve any Warranty Disclaimers. | |
| 310 </simpara> | |
| 311 </listitem> | |
| 312 </orderedlist> | |
| 313 <para> | |
| 314 If the Modified Version includes new front-matter sections or appendices | |
| 315 that qualify as Secondary Sections and contain no material copied from the | |
| 316 Document, you may at your option designate some or all of these sections | |
| 317 as invariant. To do this, add their titles to the list of Invariant | |
| 318 Sections in the Modified Version's license notice. These titles must be | |
| 319 distinct from any other section titles. | |
| 320 </para> | |
| 321 <para> | |
| 322 You may add a section Entitled "Endorsements", provided it contains | |
| 323 nothing but endorsements of your Modified Version by various parties--for | |
| 324 example, statements of peer review or that the text has been approved by | |
| 325 an organization as the authoritative definition of a standard. | |
| 326 </para> | |
| 327 <para> | |
| 328 You may add a passage of up to five words as a Front-Cover Text, and a | |
| 329 passage of up to 25 words as a Back-Cover Text, to the end of the list of | |
| 330 Cover Texts in the Modified Version. Only one passage of Front-Cover Text | |
| 331 and one of Back-Cover Text may be added by (or through arrangements made | |
| 332 by) any one entity. If the Document already includes a cover text for the | |
| 333 same cover, previously added by you or by arrangement made by the same | |
| 334 entity you are acting on behalf of, you may not add another; but you may | |
| 335 replace the old one, on explicit permission from the previous publisher | |
| 336 that added the old one. | |
| 337 </para> | |
| 338 <para> | |
| 339 The author(s) and publisher(s) of the Document do not by this License give | |
| 340 permission to use their names for publicity for or to assert or imply | |
| 341 endorsement of any Modified Version. | |
| 342 </para> | |
| 343 <bridgehead id="Combining" renderas="sect1"> | |
| 344 5. COMBINING DOCUMENTS | |
| 345 </bridgehead> | |
| 346 <para> | |
| 347 You may combine the Document with other documents released under this | |
| 348 License, under the terms defined in section 4 above for modified versions, | |
| 349 provided that you include in the combination all of the Invariant Sections | |
| 350 of all of the original documents, unmodified, and list them all as | |
| 351 Invariant Sections of your combined work in its license notice, and that | |
| 352 you preserve all their Warranty Disclaimers. | |
| 353 </para> | |
| 354 <para> | |
| 355 The combined work need only contain one copy of this License, and multiple | |
| 356 identical Invariant Sections may be replaced with a single copy. If there | |
| 357 are multiple Invariant Sections with the same name but different contents, | |
| 358 make the title of each such section unique by adding at the end of it, in | |
| 359 parentheses, the name of the original author or publisher of that section | |
| 360 if known, or else a unique number. Make the same adjustment to the | |
| 361 section titles in the list of Invariant Sections in the license notice of | |
| 362 the combined work. | |
| 363 </para> | |
| 364 <para> | |
| 365 In the combination, you must combine any sections Entitled "History" in | |
| 366 the various original documents, forming one section Entitled "History"; | |
| 367 likewise combine any sections Entitled "Acknowledgements", and any | |
| 368 sections Entitled "Dedications". You must delete all sections Entitled | |
| 369 "Endorsements". | |
| 370 </para> | |
| 371 <bridgehead id="Collections" renderas="sect1"> | |
| 372 6. COLLECTIONS OF DOCUMENTS | |
| 373 </bridgehead> | |
| 374 <para> | |
| 375 You may make a collection consisting of the Document and other documents | |
| 376 released under this License, and replace the individual copies of this | |
| 377 License in the various documents with a single copy that is included in | |
| 378 the collection, provided that you follow the rules of this License for | |
| 379 verbatim copying of each of the documents in all other respects. | |
| 380 </para> | |
| 381 <para> | |
| 382 You may extract a single document from such a collection, and distribute | |
| 383 it individually under this License, provided you insert a copy of this | |
| 384 License into the extracted document, and follow this License in all other | |
| 385 respects regarding verbatim copying of that document. | |
| 386 </para> | |
| 387 <bridgehead id="Aggregation" renderas="sect1"> | |
| 388 7. AGGREGATION WITH INDEPENDENT WORKS | |
| 389 </bridgehead> | |
| 390 <para> | |
| 391 A compilation of the Document or its derivatives with other separate and | |
| 392 independent documents or works, in or on a volume of a storage or | |
| 393 distribution medium, is called an "aggregate" if the copyright resulting | |
| 394 from the compilation is not used to limit the legal rights of the | |
| 395 compilation's users beyond what the individual works permit. When the | |
| 396 Document is included in an aggregate, this License does not apply to the | |
| 397 other works in the aggregate which are not themselves derivative works of | |
| 398 the Document. | |
| 399 </para> | |
| 400 <para> | |
| 401 If the Cover Text requirement of section 3 is applicable to these copies | |
| 402 of the Document, then if the Document is less than one half of the entire | |
| 403 aggregate, the Document's Cover Texts may be placed on covers that bracket | |
| 404 the Document within the aggregate, or the electronic equivalent of covers | |
| 405 if the Document is in electronic form. Otherwise they must appear on | |
| 406 printed covers that bracket the whole aggregate. | |
| 407 </para> | |
| 408 <bridgehead id="Translation" renderas="sect1"> | |
| 409 8. TRANSLATION | |
| 410 </bridgehead> | |
| 411 <para> | |
| 412 Translation is considered a kind of modification, so you may distribute | |
| 413 translations of the Document under the terms of section 4. Replacing | |
| 414 Invariant Sections with translations requires special permission from | |
| 415 their copyright holders, but you may include translations of some or all | |
| 416 Invariant Sections in addition to the original versions of these Invariant | |
| 417 Sections. You may include a translation of this License, and all the | |
| 418 license notices in the Document, and any Warranty Disclaimers, provided | |
| 419 that you also include the original English version of this License and the | |
| 420 original versions of those notices and disclaimers. In case of a | |
| 421 disagreement between the translation and the original version of this | |
| 422 License or a notice or disclaimer, the original version will prevail. | |
| 423 </para> | |
| 424 <para> | |
| 425 If a section in the Document is Entitled "Acknowledgements", | |
| 426 "Dedications", or "History", the requirement (section 4) to Preserve its | |
| 427 Title (section 1) will typically require changing the actual title. | |
| 428 </para> | |
| 429 <bridgehead id="fdl-1-termination" renderas="sect1"> | |
| 430 9. TERMINATION | |
| 431 </bridgehead> | |
| 432 <para> | |
| 433 You may not copy, modify, sublicense, or distribute the Document except as | |
| 434 expressly provided for under this License. Any other attempt to copy, | |
| 435 modify, sublicense or distribute the Document is void, and will | |
| 436 automatically terminate your rights under this License. However, parties | |
| 437 who have received copies, or rights, from you under this License will not | |
| 438 have their licenses terminated so long as such parties remain in full | |
| 439 compliance. | |
| 440 </para> | |
| 441 <bridgehead id="FutureRevisions" renderas="sect1"> | |
| 442 10. FUTURE REVISIONS OF THIS LICENSE | |
| 443 </bridgehead> | |
| 444 <para> | |
| 445 The Free Software Foundation may publish new, revised versions of the GNU | |
| 446 Free Documentation License from time to time. Such new versions will be | |
| 447 similar in spirit to the present version, but may differ in detail to | |
| 448 address new problems or concerns. See <ulink | |
| 449 url="http://www.gnu.org/copyleft/">http://www.gnu.org/copyleft/</ulink>. | |
| 450 </para> | |
| 451 <para> | |
| 452 Each version of the License is given a distinguishing version number. If | |
| 453 the Document specifies that a particular numbered version of this License | |
| 454 "or any later version" applies to it, you have the option of following the | |
| 455 terms and conditions either of that specified version or of any later | |
| 456 version that has been published (not as a draft) by the Free Software | |
| 457 Foundation. If the Document does not specify a version number of this | |
| 458 License, you may choose any version ever published (not as a draft) by the | |
| 459 Free Software Foundation. | |
| 460 </para> | |
| 461 <bridgehead id="HowToUse" renderas="sect1"> | |
| 462 ADDENDUM: How to use this License for your documents | |
| 463 </bridgehead> | |
| 464 <para> | |
| 465 To use this License in a document you have written, include a copy of the | |
| 466 License in the document and put the following copyright and license | |
| 467 notices just after the title page: | |
| 468 </para> | |
| 469 <blockquote> | |
| 470 <para> | |
| 471 Copyright (C) YEAR YOUR NAME. | |
| 472 </para> | |
| 473 <para> | |
| 474 Permission is granted to copy, distribute and/or modify this document | |
| 475 under the terms of the GNU Free Documentation License, Version 1.2 or | |
| 476 any later version published by the Free Software Foundation; with no | |
| 477 Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A | |
| 478 copy of the license is included in the section entitled "GNU Free | |
| 479 Documentation License". | |
| 480 </para> | |
| 481 </blockquote> | |
| 482 <para> | |
| 483 If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, | |
| 484 replace the "with...Texts." line with this: | |
| 485 </para> | |
| 486 <blockquote> | |
| 487 <para> | |
| 488 with the Invariant Sections being LIST THEIR TITLES, with the | |
| 489 Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST. | |
| 490 </para> | |
| 491 </blockquote> | |
| 492 <para> | |
| 493 If you have Invariant Sections without Cover Texts, or some other | |
| 494 combination of the three, merge those two alternatives to suit the | |
| 495 situation. | |
| 496 </para> | |
| 497 <para> | |
| 498 If your document contains nontrivial examples of program code, we | |
| 499 recommend releasing these examples in parallel under your choice of free | |
| 500 software license, such as the GNU General Public License, to permit their | |
| 501 use in free software. | |
| 502 </para> | |
| 503 </appendix> | |
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