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				+@c The GNU Free Documentation License. 
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				+@center Version 1.3, 3 November 2008 
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				+ 
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				+@c This file is intended to be included within another document, 
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				+@c hence no sectioning command or @node. 
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				+ 
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				+@display 
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				+Copyright @copyright{} 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc. 
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				+@uref{http://fsf.org/} 
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				+ 
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				+Everyone is permitted to copy and distribute verbatim copies 
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				+of this license document, but changing it is not allowed. 
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				+@end display 
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				+ 
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				+@enumerate 0 
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				+@item 
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				+PREAMBLE 
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				+ 
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				+The purpose of this License is to make a manual, textbook, or other 
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				+functional and useful document @dfn{free} in the sense of freedom: to 
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				+assure everyone the effective freedom to copy and redistribute it, 
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				+with or without modifying it, either commercially or noncommercially. 
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				+Secondarily, this License preserves for the author and publisher a way 
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				+to get credit for their work, while not being considered responsible 
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				+for modifications made by others. 
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				+ 
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				+This License is a kind of ``copyleft'', which means that derivative 
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				+works of the document must themselves be free in the same sense.  It 
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				+complements the GNU General Public License, which is a copyleft 
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				+license designed for free software. 
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				+ 
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				+We have designed this License in order to use it for manuals for free 
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				+software, because free software needs free documentation: a free 
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				+program should come with manuals providing the same freedoms that the 
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				+software does.  But this License is not limited to software manuals; 
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				+it can be used for any textual work, regardless of subject matter or 
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				+whether it is published as a printed book.  We recommend this License 
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				+principally for works whose purpose is instruction or reference. 
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				+ 
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				+@item 
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				+APPLICABILITY AND DEFINITIONS 
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				+ 
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				+This License applies to any manual or other work, in any medium, that 
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				+contains a notice placed by the copyright holder saying it can be 
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				+distributed under the terms of this License.  Such a notice grants a 
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				+world-wide, royalty-free license, unlimited in duration, to use that 
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				+work under the conditions stated herein.  The ``Document'', below, 
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				+refers to any such manual or work.  Any member of the public is a 
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				+licensee, and is addressed as ``you''.  You accept the license if you 
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				+copy, modify or distribute the work in a way requiring permission 
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				+under copyright law. 
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				+ 
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				+A ``Modified Version'' of the Document means any work containing the 
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				+Document or a portion of it, either copied verbatim, or with 
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				+modifications and/or translated into another language. 
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				+ 
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				+A ``Secondary Section'' is a named appendix or a front-matter section 
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				+of the Document that deals exclusively with the relationship of the 
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				+publishers or authors of the Document to the Document's overall 
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				+subject (or to related matters) and contains nothing that could fall 
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				+directly within that overall subject.  (Thus, if the Document is in 
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				+part a textbook of mathematics, a Secondary Section may not explain 
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				+any mathematics.)  The relationship could be a matter of historical 
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				+connection with the subject or with related matters, or of legal, 
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				+commercial, philosophical, ethical or political position regarding 
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				+them. 
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				+ 
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				+The ``Invariant Sections'' are certain Secondary Sections whose titles 
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				+are designated, as being those of Invariant Sections, in the notice 
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				+that says that the Document is released under this License.  If a 
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				+section does not fit the above definition of Secondary then it is not 
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				+allowed to be designated as Invariant.  The Document may contain zero 
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				+Invariant Sections.  If the Document does not identify any Invariant 
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				+Sections then there are none. 
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				+ 
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				+The ``Cover Texts'' are certain short passages of text that are listed, 
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				+as Front-Cover Texts or Back-Cover Texts, in the notice that says that 
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				+the Document is released under this License.  A Front-Cover Text may 
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				+be at most 5 words, and a Back-Cover Text may be at most 25 words. 
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				+ 
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				+A ``Transparent'' copy of the Document means a machine-readable copy, 
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				+represented in a format whose specification is available to the 
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				+general public, that is suitable for revising the document 
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				+straightforwardly with generic text editors or (for images composed of 
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				+pixels) generic paint programs or (for drawings) some widely available 
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				+drawing editor, and that is suitable for input to text formatters or 
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				+for automatic translation to a variety of formats suitable for input 
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				+to text formatters.  A copy made in an otherwise Transparent file 
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				+format whose markup, or absence of markup, has been arranged to thwart 
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				+or discourage subsequent modification by readers is not Transparent. 
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				+An image format is not Transparent if used for any substantial amount 
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				+of text.  A copy that is not ``Transparent'' is called ``Opaque''. 
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				+ 
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				+Examples of suitable formats for Transparent copies include plain 
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				+ASCII without markup, Texinfo input format, La@TeX{} input 
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				+format, SGML or XML using a publicly available 
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				+DTD, and standard-conforming simple HTML, 
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				+PostScript or PDF designed for human modification.  Examples 
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				+of transparent image formats include PNG, XCF and 
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				+JPG@.  Opaque formats include proprietary formats that can be 
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				+read and edited only by proprietary word processors, SGML or 
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				+XML for which the DTD and/or processing tools are 
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				+not generally available, and the machine-generated HTML, 
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				+PostScript or PDF produced by some word processors for 
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				+output purposes only. 
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				+ 
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				+The ``Title Page'' means, for a printed book, the title page itself, 
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				+plus such following pages as are needed to hold, legibly, the material 
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				+this License requires to appear in the title page.  For works in 
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				+formats which do not have any title page as such, ``Title Page'' means 
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				+the text near the most prominent appearance of the work's title, 
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				+preceding the beginning of the body of the text. 
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				+ 
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				+The ``publisher'' means any person or entity that distributes copies 
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				+of the Document to the public. 
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				+ 
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				+A section ``Entitled XYZ'' means a named subunit of the Document whose 
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				+title either is precisely XYZ or contains XYZ in parentheses following 
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				+text that translates XYZ in another language.  (Here XYZ stands for a 
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				+specific section name mentioned below, such as ``Acknowledgements'', 
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				+``Dedications'', ``Endorsements'', or ``History''.)  To ``Preserve the Title'' 
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				+of such a section when you modify the Document means that it remains a 
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				+section ``Entitled XYZ'' according to this definition. 
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				+ 
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				+The Document may include Warranty Disclaimers next to the notice which 
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				+states that this License applies to the Document.  These Warranty 
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				+Disclaimers are considered to be included by reference in this 
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				+License, but only as regards disclaiming warranties: any other 
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				+implication that these Warranty Disclaimers may have is void and has 
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				+no effect on the meaning of this License. 
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				+ 
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				+@item 
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				+VERBATIM COPYING 
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				+ 
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				+You may copy and distribute the Document in any medium, either 
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				+commercially or noncommercially, provided that this License, the 
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				+copyright notices, and the license notice saying this License applies 
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				+to the Document are reproduced in all copies, and that you add no other 
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				+conditions whatsoever to those of this License.  You may not use 
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				+technical measures to obstruct or control the reading or further 
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				+copying of the copies you make or distribute.  However, you may accept 
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				+compensation in exchange for copies.  If you distribute a large enough 
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				+number of copies you must also follow the conditions in section 3. 
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				+ 
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				+You may also lend copies, under the same conditions stated above, and 
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				+you may publicly display copies. 
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				+ 
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				+@item 
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				+COPYING IN QUANTITY 
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				+ 
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				+If you publish printed copies (or copies in media that commonly have 
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				+printed covers) of the Document, numbering more than 100, and the 
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				+Document's license notice requires Cover Texts, you must enclose the 
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				+copies in covers that carry, clearly and legibly, all these Cover 
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				+Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on 
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				+the back cover.  Both covers must also clearly and legibly identify 
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				+you as the publisher of these copies.  The front cover must present 
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				+the full title with all words of the title equally prominent and 
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				+visible.  You may add other material on the covers in addition. 
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				+Copying with changes limited to the covers, as long as they preserve 
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				+the title of the Document and satisfy these conditions, can be treated 
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				+as verbatim copying in other respects. 
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				+ 
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				+If the required texts for either cover are too voluminous to fit 
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				+legibly, you should put the first ones listed (as many as fit 
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				+reasonably) on the actual cover, and continue the rest onto adjacent 
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				+pages. 
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				+ 
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				+If you publish or distribute Opaque copies of the Document numbering 
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				+more than 100, you must either include a machine-readable Transparent 
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				+copy along with each Opaque copy, or state in or with each Opaque copy 
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				+a computer-network location from which the general network-using 
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				+public has access to download using public-standard network protocols 
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				+a complete Transparent copy of the Document, free of added material. 
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				+If you use the latter option, you must take reasonably prudent steps, 
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				+when you begin distribution of Opaque copies in quantity, to ensure 
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				+that this Transparent copy will remain thus accessible at the stated 
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				+location until at least one year after the last time you distribute an 
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				+Opaque copy (directly or through your agents or retailers) of that 
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				+edition to the public. 
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				+ 
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				+It is requested, but not required, that you contact the authors of the 
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				+Document well before redistributing any large number of copies, to give 
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				+them a chance to provide you with an updated version of the Document. 
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				+ 
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				+@item 
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				+MODIFICATIONS 
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				+ 
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				+You may copy and distribute a Modified Version of the Document under 
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				+the conditions of sections 2 and 3 above, provided that you release 
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				+the Modified Version under precisely this License, with the Modified 
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				+Version filling the role of the Document, thus licensing distribution 
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				+and modification of the Modified Version to whoever possesses a copy 
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				+of it.  In addition, you must do these things in the Modified Version: 
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				+ 
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				+@enumerate A 
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				+@item 
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				+Use in the Title Page (and on the covers, if any) a title distinct 
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				+from that of the Document, and from those of previous versions 
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				+(which should, if there were any, be listed in the History section 
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				+of the Document).  You may use the same title as a previous version 
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				+if the original publisher of that version gives permission. 
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				+ 
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				+@item 
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				+List on the Title Page, as authors, one or more persons or entities 
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				+responsible for authorship of the modifications in the Modified 
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				+Version, together with at least five of the principal authors of the 
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				+Document (all of its principal authors, if it has fewer than five), 
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				+unless they release you from this requirement. 
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				+ 
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				+@item 
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				+State on the Title page the name of the publisher of the 
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				+Modified Version, as the publisher. 
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				+ 
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				+@item 
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				+Preserve all the copyright notices of the Document. 
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				+ 
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				+@item 
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				+Add an appropriate copyright notice for your modifications 
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				+adjacent to the other copyright notices. 
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				+ 
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				+@item 
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				+Include, immediately after the copyright notices, a license notice 
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				+giving the public permission to use the Modified Version under the 
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				+terms of this License, in the form shown in the Addendum below. 
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				+ 
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				+@item 
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				+Preserve in that license notice the full lists of Invariant Sections 
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				+and required Cover Texts given in the Document's license notice. 
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				+ 
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				+@item 
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				+Include an unaltered copy of this License. 
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				+ 
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				+@item 
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				+Preserve the section Entitled ``History'', Preserve its Title, and add 
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				+to it an item stating at least the title, year, new authors, and 
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				+publisher of the Modified Version as given on the Title Page.  If 
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				+there is no section Entitled ``History'' in the Document, create one 
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				+stating the title, year, authors, and publisher of the Document as 
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				+given on its Title Page, then add an item describing the Modified 
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				 | 
				 | 
			
			
				+Version as stated in the previous sentence. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@item 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Preserve the network location, if any, given in the Document for 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+public access to a Transparent copy of the Document, and likewise 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+the network locations given in the Document for previous versions 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+it was based on.  These may be placed in the ``History'' section. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+You may omit a network location for a work that was published at 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+least four years before the Document itself, or if the original 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+publisher of the version it refers to gives permission. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@item 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+For any section Entitled ``Acknowledgements'' or ``Dedications'', Preserve 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+the Title of the section, and preserve in the section all the 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+substance and tone of each of the contributor acknowledgements and/or 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+dedications given therein. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@item 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Preserve all the Invariant Sections of the Document, 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+unaltered in their text and in their titles.  Section numbers 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+or the equivalent are not considered part of the section titles. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@item 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Delete any section Entitled ``Endorsements''.  Such a section 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+may not be included in the Modified Version. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@item 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Do not retitle any existing section to be Entitled ``Endorsements'' or 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+to conflict in title with any Invariant Section. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@item 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Preserve any Warranty Disclaimers. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@end enumerate 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+If the Modified Version includes new front-matter sections or 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+appendices that qualify as Secondary Sections and contain no material 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+copied from the Document, you may at your option designate some or all 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+of these sections as invariant.  To do this, add their titles to the 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+list of Invariant Sections in the Modified Version's license notice. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+These titles must be distinct from any other section titles. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+You may add a section Entitled ``Endorsements'', provided it contains 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+nothing but endorsements of your Modified Version by various 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+parties---for example, statements of peer review or that the text has 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+been approved by an organization as the authoritative definition of a 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+standard. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+You may add a passage of up to five words as a Front-Cover Text, and a 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+passage of up to 25 words as a Back-Cover Text, to the end of the list 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+of Cover Texts in the Modified Version.  Only one passage of 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Front-Cover Text and one of Back-Cover Text may be added by (or 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+through arrangements made by) any one entity.  If the Document already 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+includes a cover text for the same cover, previously added by you or 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+by arrangement made by the same entity you are acting on behalf of, 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+you may not add another; but you may replace the old one, on explicit 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+permission from the previous publisher that added the old one. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+The author(s) and publisher(s) of the Document do not by this License 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+give permission to use their names for publicity for or to assert or 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+imply endorsement of any Modified Version. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@item 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+COMBINING DOCUMENTS 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+You may combine the Document with other documents released under this 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+License, under the terms defined in section 4 above for modified 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+versions, provided that you include in the combination all of the 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Invariant Sections of all of the original documents, unmodified, and 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+list them all as Invariant Sections of your combined work in its 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+license notice, and that you preserve all their Warranty Disclaimers. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+The combined work need only contain one copy of this License, and 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+multiple identical Invariant Sections may be replaced with a single 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+copy.  If there are multiple Invariant Sections with the same name but 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+different contents, make the title of each such section unique by 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+adding at the end of it, in parentheses, the name of the original 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+author or publisher of that section if known, or else a unique number. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Make the same adjustment to the section titles in the list of 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Invariant Sections in the license notice of the combined work. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+In the combination, you must combine any sections Entitled ``History'' 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+in the various original documents, forming one section Entitled 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+``History''; likewise combine any sections Entitled ``Acknowledgements'', 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+and any sections Entitled ``Dedications''.  You must delete all 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+sections Entitled ``Endorsements.'' 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@item 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+COLLECTIONS OF DOCUMENTS 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+You may make a collection consisting of the Document and other documents 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+released under this License, and replace the individual copies of this 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+License in the various documents with a single copy that is included in 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+the collection, provided that you follow the rules of this License for 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+verbatim copying of each of the documents in all other respects. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+You may extract a single document from such a collection, and distribute 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+it individually under this License, provided you insert a copy of this 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+License into the extracted document, and follow this License in all 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+other respects regarding verbatim copying of that document. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@item 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+AGGREGATION WITH INDEPENDENT WORKS 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+A compilation of the Document or its derivatives with other separate 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+and independent documents or works, in or on a volume of a storage or 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+distribution medium, is called an ``aggregate'' if the copyright 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+resulting from the compilation is not used to limit the legal rights 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+of the compilation's users beyond what the individual works permit. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+When the Document is included in an aggregate, this License does not 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+apply to the other works in the aggregate which are not themselves 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+derivative works of the Document. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+If the Cover Text requirement of section 3 is applicable to these 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+copies of the Document, then if the Document is less than one half of 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+the entire aggregate, the Document's Cover Texts may be placed on 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+covers that bracket the Document within the aggregate, or the 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+electronic equivalent of covers if the Document is in electronic form. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Otherwise they must appear on printed covers that bracket the whole 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+aggregate. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@item 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+TRANSLATION 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Translation is considered a kind of modification, so you may 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+distribute translations of the Document under the terms of section 4. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Replacing Invariant Sections with translations requires special 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+permission from their copyright holders, but you may include 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+translations of some or all Invariant Sections in addition to the 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+original versions of these Invariant Sections.  You may include a 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+translation of this License, and all the license notices in the 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Document, and any Warranty Disclaimers, provided that you also include 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+the original English version of this License and the original versions 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+of those notices and disclaimers.  In case of a disagreement between 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+the translation and the original version of this License or a notice 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+or disclaimer, the original version will prevail. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+If a section in the Document is Entitled ``Acknowledgements'', 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+``Dedications'', or ``History'', the requirement (section 4) to Preserve 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+its Title (section 1) will typically require changing the actual 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+title. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@item 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+TERMINATION 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+You may not copy, modify, sublicense, or distribute the Document 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+except as expressly provided under this License.  Any attempt 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+otherwise to copy, modify, sublicense, or distribute it is void, and 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+will automatically terminate your rights under this License. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+However, if you cease all violation of this License, then your license 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+from a particular copyright holder is reinstated (a) provisionally, 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+unless and until the copyright holder explicitly and finally 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+terminates your license, and (b) permanently, if the copyright holder 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+fails to notify you of the violation by some reasonable means prior to 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+60 days after the cessation. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Moreover, your license from a particular copyright holder is 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+reinstated permanently if the copyright holder notifies you of the 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+violation by some reasonable means, this is the first time you have 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+received notice of violation of this License (for any work) from that 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+copyright holder, and you cure the violation prior to 30 days after 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+your receipt of the notice. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Termination of your rights under this section does not terminate the 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+licenses of parties who have received copies or rights from you under 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+this License.  If your rights have been terminated and not permanently 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+reinstated, receipt of a copy of some or all of the same material does 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+not give you any rights to use it. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@item 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+FUTURE REVISIONS OF THIS LICENSE 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+The Free Software Foundation may publish new, revised versions 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+of the GNU Free Documentation License from time to time.  Such new 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+versions will be similar in spirit to the present version, but may 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+differ in detail to address new problems or concerns.  See 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@uref{http://www.gnu.org/copyleft/}. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Each version of the License is given a distinguishing version number. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+If the Document specifies that a particular numbered version of this 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+License ``or any later version'' applies to it, you have the option of 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+following the terms and conditions either of that specified version or 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+of any later version that has been published (not as a draft) by the 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Free Software Foundation.  If the Document does not specify a version 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+number of this License, you may choose any version ever published (not 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+as a draft) by the Free Software Foundation.  If the Document 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+specifies that a proxy can decide which future versions of this 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+License can be used, that proxy's public statement of acceptance of a 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+version permanently authorizes you to choose that version for the 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+Document. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@item 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+RELICENSING 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+``Massive Multiauthor Collaboration Site'' (or ``MMC Site'') means any 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+World Wide Web server that publishes copyrightable works and also 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+provides prominent facilities for anybody to edit those works.  A 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+public wiki that anybody can edit is an example of such a server.  A 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+``Massive Multiauthor Collaboration'' (or ``MMC'') contained in the 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+site means any set of copyrightable works thus published on the MMC 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+site. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+``CC-BY-SA'' means the Creative Commons Attribution-Share Alike 3.0 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+license published by Creative Commons Corporation, a not-for-profit 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+corporation with a principal place of business in San Francisco, 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+California, as well as future copyleft versions of that license 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+published by that same organization. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+``Incorporate'' means to publish or republish a Document, in whole or 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+in part, as part of another Document. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+An MMC is ``eligible for relicensing'' if it is licensed under this 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+License, and if all works that were first published under this License 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+somewhere other than this MMC, and subsequently incorporated in whole 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+or in part into the MMC, (1) had no cover texts or invariant sections, 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+and (2) were thus incorporated prior to November 1, 2008. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+The operator of an MMC Site may republish an MMC contained in the site 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+under CC-BY-SA on the same site at any time before August 1, 2009, 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+provided the MMC is eligible for relicensing. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@end enumerate 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@page 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@heading ADDENDUM: How to use this License for your documents 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+To use this License in a document you have written, include a copy of 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+the License in the document and put the following copyright and 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+license notices just after the title page: 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@smallexample 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@group 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+  Copyright (C)  @var{year}  @var{your name}. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+  Permission is granted to copy, distribute and/or modify this document 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+  under the terms of the GNU Free Documentation License, Version 1.3 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+  or any later version published by the Free Software Foundation; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+  with no Invariant Sections, no Front-Cover Texts, and no Back-Cover 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+  Texts.  A copy of the license is included in the section entitled ``GNU 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+  Free Documentation License''. 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@end group 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+@end smallexample 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+replace the ``with@dots{}Texts.''@: line with this: 
			 | 
		
	
		
			
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				+ 
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				+@smallexample 
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				+@group 
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				+    with the Invariant Sections being @var{list their titles}, with 
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				+    the Front-Cover Texts being @var{list}, and with the Back-Cover Texts 
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				+    being @var{list}. 
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				+@end group 
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				+@end smallexample 
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				+ 
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				+If you have Invariant Sections without Cover Texts, or some other 
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				+combination of the three, merge those two alternatives to suit the 
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				+situation. 
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				+ 
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				+If your document contains nontrivial examples of program code, we 
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				+recommend releasing these examples in parallel under your choice of 
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				+free software license, such as the GNU General Public License, 
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				+to permit their use in free software. 
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				+ 
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				+@c Local Variables: 
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				+@c ispell-local-pdict: "ispell-dict" 
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				+@c End: 
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