<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- fdl.qdoc --> <title>GNU Free Documentation License (FDL) | Qt 5.12</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td ><a href="index.html">Qt 5.12</a></td><td >GNU Free Documentation License (FDL)</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.12.6 Reference Documentation</td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">GNU Free Documentation License (FDL)</h1> <span class="subtitle"></span> <!-- $$$fdl.html-description --> <div class="descr"> <a name="details"></a> <p>Qt documentation is available under commercial licenses from The Qt Company. In addition, is is available under the terms of the GNU Free Documentation License version 1.3, as published by the Free Software Foundation.</p> <p>Example code embedded in the Qt documentation is also licensed under a <a href="https://spdx.org/licenses/BSD-3-Clause.html">BSD 3-Clause "New" or "Revised" License</a>. See <a href="examples-license.html">License of Qt examples</a> for further details.</p> <p>The Qt Toolkit is Copyright (C) 2018 The Qt Company Ltd. and other contributors.<br /> Contact: <a href="https://www.qt.io/licensing/">https://www.qt.io/licensing/</a></p> <p>Reference: <a href="http://www.gnu.org/copyleft/fdl.html">GNU Free Documentation License</a></p> <pre class="cpp"> GNU Free Documentation License Version <span class="number">1.3</span><span class="operator">,</span> <span class="number">3</span> November <span class="number">2008</span> Copyright (C) <span class="number">2000</span><span class="operator">,</span> <span class="number">2001</span><span class="operator">,</span> <span class="number">2002</span><span class="operator">,</span> <span class="number">2007</span><span class="operator">,</span> <span class="number">2008</span> Free Software Foundation<span class="operator">,</span> Inc<span class="operator">.</span> <span class="operator"><</span>http:<span class="comment">//fsf.org/></span> Everyone is permitted to copy and distribute verbatim copies of <span class="keyword">this</span> license document<span class="operator">,</span> but changing it is <span class="keyword">not</span> allowed<span class="operator">.</span> <span class="number">0.</span> PREAMBLE The purpose of <span class="keyword">this</span> License is to make a manual<span class="operator">,</span> textbook<span class="operator">,</span> <span class="keyword">or</span> other functional and useful document <span class="string">"free"</span> in the sense of freedom: to assure everyone the effective freedom to copy and redistribute it<span class="operator">,</span> with <span class="keyword">or</span> without modifying it<span class="operator">,</span> either commercially <span class="keyword">or</span> noncommercially<span class="operator">.</span> Secondarily<span class="operator">,</span> <span class="keyword">this</span> License preserves <span class="keyword">for</span> the author and publisher a way to get credit <span class="keyword">for</span> their work<span class="operator">,</span> <span class="keyword">while</span> <span class="keyword">not</span> being considered responsible <span class="keyword">for</span> modifications made by others<span class="operator">.</span> This License is a kind of <span class="string">"copyleft"</span><span class="operator">,</span> which means that derivative works of the document must themselves be free in the same sense<span class="operator">.</span> It complements the GNU General Public License<span class="operator">,</span> which is a copyleft license designed <span class="keyword">for</span> free software<span class="operator">.</span> We have designed <span class="keyword">this</span> License in order to use it <span class="keyword">for</span> manuals <span class="keyword">for</span> free software<span class="operator">,</span> because free software needs free documentation: a free program should come with manuals providing the same freedoms that the software does<span class="operator">.</span> But <span class="keyword">this</span> License is <span class="keyword">not</span> limited to software manuals; it can be used <span class="keyword">for</span> any textual work<span class="operator">,</span> regardless of subject matter <span class="keyword">or</span> whether it is published as a printed book<span class="operator">.</span> We recommend <span class="keyword">this</span> License principally <span class="keyword">for</span> works whose purpose is instruction <span class="keyword">or</span> reference<span class="operator">.</span> <span class="number">1.</span> APPLICABILITY AND DEFINITIONS This License applies to any manual <span class="keyword">or</span> other work<span class="operator">,</span> in any medium<span class="operator">,</span> that contains a notice placed by the copyright holder saying it can be distributed under the terms of <span class="keyword">this</span> License<span class="operator">.</span> Such a notice grants a world<span class="operator">-</span>wide<span class="operator">,</span> royalty<span class="operator">-</span>free license<span class="operator">,</span> unlimited in duration<span class="operator">,</span> to use that work under the conditions stated herein<span class="operator">.</span> The <span class="string">"Document"</span><span class="operator">,</span> below<span class="operator">,</span> refers to any such manual <span class="keyword">or</span> work<span class="operator">.</span> Any member of the <span class="keyword">public</span> is a licensee<span class="operator">,</span> and is addressed as <span class="string">"you"</span><span class="operator">.</span> You accept the license <span class="keyword">if</span> you copy<span class="operator">,</span> modify <span class="keyword">or</span> distribute the work in a way requiring permission under copyright law<span class="operator">.</span> A <span class="string">"Modified Version"</span> of the Document means any work containing the Document <span class="keyword">or</span> a portion of it<span class="operator">,</span> either copied verbatim<span class="operator">,</span> <span class="keyword">or</span> with modifications and<span class="operator">/</span><span class="keyword">or</span> translated into another language<span class="operator">.</span> A <span class="string">"Secondary Section"</span> is a named appendix <span class="keyword">or</span> a front<span class="operator">-</span>matter section of the Document that deals exclusively with the relationship of the publishers <span class="keyword">or</span> authors of the Document to the Document<span class="char">'s overall subject (or to related matters) and contains nothing that could fall directly within that overall subject. (Thus, if the Document is in part a textbook of mathematics, a Secondary Section may not explain any mathematics.) The relationship could be a matter of historical connection with the subject or with related matters, or of legal, commercial, philosophical, ethical or political position regarding them. The "Invariant Sections" are certain Secondary Sections whose titles are designated, as being those of Invariant Sections, in the notice that says that the Document is released under this License. If a section does not fit the above definition of Secondary then it is not allowed to be designated as Invariant. The Document may contain zero Invariant Sections. If the Document does not identify any Invariant Sections then there are none. The "Cover Texts" are certain short passages of text that are listed, as Front-Cover Texts or Back-Cover Texts, in the notice that says that the Document is released under this License. A Front-Cover Text may be at most 5 words, and a Back-Cover Text may be at most 25 words. A "Transparent" copy of the Document means a machine-readable copy, represented in a format whose specification is available to the general public, that is suitable for revising the document straightforwardly with generic text editors or (for images composed of pixels) generic paint programs or (for drawings) some widely available drawing editor, and that is suitable for input to text formatters or for automatic translation to a variety of formats suitable for input to text formatters. A copy made in an otherwise Transparent file format whose markup, or absence of markup, has been arranged to thwart or discourage subsequent modification by readers is not Transparent. An image format is not Transparent if used for any substantial amount of text. A copy that is not "Transparent" is called "Opaque". Examples of suitable formats for Transparent copies include plain ASCII without markup, Texinfo input format, LaTeX input format, SGML or XML using a publicly available DTD, and standard-conforming simple HTML, PostScript or PDF designed for human modification. Examples of transparent image formats include PNG, XCF and JPG. Opaque formats include proprietary formats that can be read and edited only by proprietary word processors, SGML or XML for which the DTD and/or processing tools are not generally available, and the machine-generated HTML, PostScript or PDF produced by some word processors for output purposes only. The "Title Page" means, for a printed book, the title page itself, plus such following pages as are needed to hold, legibly, the material this License requires to appear in the title page. For works in formats which do not have any title page as such, "Title Page" means the text near the most prominent appearance of the work'</span>s title<span class="operator">,</span> preceding the beginning of the body of the text<span class="operator">.</span> The <span class="string">"publisher"</span> means any person <span class="keyword">or</span> entity that distributes copies of the Document to the <span class="keyword">public</span><span class="operator">.</span> A section <span class="string">"Entitled XYZ"</span> means a named subunit of the Document whose title either is precisely XYZ <span class="keyword">or</span> contains XYZ in parentheses following text that translates XYZ in another language<span class="operator">.</span> (Here XYZ stands <span class="keyword">for</span> a specific section name mentioned below<span class="operator">,</span> such as <span class="string">"Acknowledgements"</span><span class="operator">,</span> <span class="string">"Dedications"</span><span class="operator">,</span> <span class="string">"Endorsements"</span><span class="operator">,</span> <span class="keyword">or</span> <span class="string">"History"</span><span class="operator">.</span>) To <span class="string">"Preserve the Title"</span> of such a section when you modify the Document means that it remains a section <span class="string">"Entitled XYZ"</span> according to <span class="keyword">this</span> definition<span class="operator">.</span> The Document may <span class="keyword">include</span> Warranty Disclaimers next to the notice which states that <span class="keyword">this</span> License applies to the Document<span class="operator">.</span> These Warranty Disclaimers are considered to be included by reference in <span class="keyword">this</span> License<span class="operator">,</span> but only as regards disclaiming warranties: any other implication that these Warranty Disclaimers may have is <span class="type">void</span> and has no effect on the meaning of <span class="keyword">this</span> License<span class="operator">.</span> <span class="number">2.</span> VERBATIM COPYING You may copy and distribute the Document in any medium<span class="operator">,</span> either commercially <span class="keyword">or</span> noncommercially<span class="operator">,</span> provided that <span class="keyword">this</span> License<span class="operator">,</span> the copyright notices<span class="operator">,</span> and the license notice saying <span class="keyword">this</span> License applies to the Document are reproduced in all copies<span class="operator">,</span> and that you add no other conditions whatsoever to those of <span class="keyword">this</span> License<span class="operator">.</span> You may <span class="keyword">not</span> use technical measures to obstruct <span class="keyword">or</span> control the reading <span class="keyword">or</span> further copying of the copies you make <span class="keyword">or</span> distribute<span class="operator">.</span> However<span class="operator">,</span> you may accept compensation in exchange <span class="keyword">for</span> copies<span class="operator">.</span> If you distribute a large enough number of copies you must also follow the conditions in section <span class="number">3.</span> You may also lend copies<span class="operator">,</span> under the same conditions stated above<span class="operator">,</span> and you may publicly display copies<span class="operator">.</span> <span class="number">3.</span> COPYING IN QUANTITY If you publish printed copies (<span class="keyword">or</span> copies in media that commonly have printed covers) of the Document<span class="operator">,</span> numbering more than <span class="number">100</span><span class="operator">,</span> and the Document<span class="char">'s license notice requires Cover Texts, you must enclose the copies in covers that carry, clearly and legibly, all these Cover Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on the back cover. Both covers must also clearly and legibly identify you as the publisher of these copies. The front cover must present the full title with all words of the title equally prominent and visible. You may add other material on the covers in addition. Copying with changes limited to the covers, as long as they preserve the title of the Document and satisfy these conditions, can be treated as verbatim copying in other respects. If the required texts for either cover are too voluminous to fit legibly, you should put the first ones listed (as many as fit reasonably) on the actual cover, and continue the rest onto adjacent pages. If you publish or distribute Opaque copies of the Document numbering more than 100, you must either include a machine-readable Transparent copy along with each Opaque copy, or state in or with each Opaque copy a computer-network location from which the general network-using public has access to download using public-standard network protocols a complete Transparent copy of the Document, free of added material. If you use the latter option, you must take reasonably prudent steps, when you begin distribution of Opaque copies in quantity, to ensure that this Transparent copy will remain thus accessible at the stated location until at least one year after the last time you distribute an Opaque copy (directly or through your agents or retailers) of that edition to the public. It is requested, but not required, that you contact the authors of the Document well before redistributing any large number of copies, to give them a chance to provide you with an updated version of the Document. 4. MODIFICATIONS You may copy and distribute a Modified Version of the Document under the conditions of sections 2 and 3 above, provided that you release the Modified Version under precisely this License, with the Modified Version filling the role of the Document, thus licensing distribution and modification of the Modified Version to whoever possesses a copy of it. In addition, you must do these things in the Modified Version: A. Use in the Title Page (and on the covers, if any) a title distinct from that of the Document, and from those of previous versions (which should, if there were any, be listed in the History section of the Document). You may use the same title as a previous version if the original publisher of that version gives permission. B. List on the Title Page, as authors, one or more persons or entities responsible for authorship of the modifications in the Modified Version, together with at least five of the principal authors of the Document (all of its principal authors, if it has fewer than five), unless they release you from this requirement. C. State on the Title page the name of the publisher of the Modified Version, as the publisher. D. Preserve all the copyright notices of the Document. E. Add an appropriate copyright notice for your modifications adjacent to the other copyright notices. F. Include, immediately after the copyright notices, a license notice giving the public permission to use the Modified Version under the terms of this License, in the form shown in the Addendum below. G. Preserve in that license notice the full lists of Invariant Sections and required Cover Texts given in the Document'</span>s license notice<span class="operator">.</span> H<span class="operator">.</span> Include an unaltered copy of <span class="keyword">this</span> License<span class="operator">.</span> I<span class="operator">.</span> Preserve the section Entitled <span class="string">"History"</span><span class="operator">,</span> Preserve its Title<span class="operator">,</span> and add to it an item stating at least the title<span class="operator">,</span> year<span class="operator">,</span> <span class="keyword">new</span> authors<span class="operator">,</span> and publisher of the Modified Version as given on the Title Page<span class="operator">.</span> If there is no section Entitled <span class="string">"History"</span> in the Document<span class="operator">,</span> create one stating the title<span class="operator">,</span> year<span class="operator">,</span> authors<span class="operator">,</span> and publisher of the Document as given on its Title Page<span class="operator">,</span> then add an item describing the Modified Version as stated in the previous sentence<span class="operator">.</span> J<span class="operator">.</span> Preserve the network location<span class="operator">,</span> <span class="keyword">if</span> any<span class="operator">,</span> given in the Document <span class="keyword">for</span> <span class="keyword">public</span> access to a Transparent copy of the Document<span class="operator">,</span> and likewise the network locations given in the Document <span class="keyword">for</span> previous versions it was based on<span class="operator">.</span> These may be placed in the <span class="string">"History"</span> section<span class="operator">.</span> You may omit a network location <span class="keyword">for</span> a work that was published at least four years before the Document itself<span class="operator">,</span> <span class="keyword">or</span> <span class="keyword">if</span> the original publisher of the version it refers to gives permission<span class="operator">.</span> K<span class="operator">.</span> For any section Entitled <span class="string">"Acknowledgements"</span> <span class="keyword">or</span> <span class="string">"Dedications"</span><span class="operator">,</span> Preserve the Title of the section<span class="operator">,</span> and preserve in the section all the substance and tone of each of the contributor acknowledgements and<span class="operator">/</span><span class="keyword">or</span> dedications given therein<span class="operator">.</span> L<span class="operator">.</span> Preserve all the Invariant Sections of the Document<span class="operator">,</span> unaltered in their text and in their titles<span class="operator">.</span> Section numbers <span class="keyword">or</span> the equivalent are <span class="keyword">not</span> considered part of the section titles<span class="operator">.</span> M<span class="operator">.</span> Delete any section Entitled <span class="string">"Endorsements"</span><span class="operator">.</span> Such a section may <span class="keyword">not</span> be included in the Modified Version<span class="operator">.</span> N<span class="operator">.</span> Do <span class="keyword">not</span> retitle any existing section to be Entitled <span class="string">"Endorsements"</span> <span class="keyword">or</span> to conflict in title with any Invariant Section<span class="operator">.</span> O<span class="operator">.</span> Preserve any Warranty Disclaimers<span class="operator">.</span> If the Modified Version includes <span class="keyword">new</span> front<span class="operator">-</span>matter sections <span class="keyword">or</span> appendices that qualify as Secondary Sections and contain no material copied from the Document<span class="operator">,</span> you may at your option designate some <span class="keyword">or</span> all of these sections as invariant<span class="operator">.</span> To <span class="keyword">do</span> <span class="keyword">this</span><span class="operator">,</span> add their titles to the list of Invariant Sections in the Modified Version<span class="char">'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. 5. 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". 6. 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. 7. 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'</span>s users beyond what the individual works permit<span class="operator">.</span> When the Document is included in an aggregate<span class="operator">,</span> <span class="keyword">this</span> License does <span class="keyword">not</span> apply to the other works in the aggregate which are <span class="keyword">not</span> themselves derivative works of the Document<span class="operator">.</span> If the Cover Text requirement of section <span class="number">3</span> is applicable to these copies of the Document<span class="operator">,</span> then <span class="keyword">if</span> the Document is less than one half of the entire aggregate<span class="operator">,</span> the Document<span class="char">'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. 8. 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. 9. 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. 10. 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 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'</span>s <span class="keyword">public</span> statement of acceptance of a version permanently authorizes you to choose that version <span class="keyword">for</span> the Document<span class="operator">.</span> <span class="number">11.</span> RELICENSING <span class="string">"Massive Multiauthor Collaboration Site"</span> (<span class="keyword">or</span> <span class="string">"MMC Site"</span>) means any World Wide Web server that publishes copyrightable works and also provides prominent facilities <span class="keyword">for</span> anybody to edit those works<span class="operator">.</span> A <span class="keyword">public</span> wiki that anybody can edit is an example of such a server<span class="operator">.</span> A <span class="string">"Massive Multiauthor Collaboration"</span> (<span class="keyword">or</span> <span class="string">"MMC"</span>) contained in the site means any set of copyrightable works thus published on the MMC site<span class="operator">.</span> <span class="string">"CC-BY-SA"</span> means the Creative Commons Attribution<span class="operator">-</span>Share Alike <span class="number">3.0</span> license published by Creative Commons Corporation<span class="operator">,</span> a <span class="keyword">not</span><span class="operator">-</span><span class="keyword">for</span><span class="operator">-</span>profit corporation with a principal place of business in San Francisco<span class="operator">,</span> California<span class="operator">,</span> as well as future copyleft versions of that license published by that same organization<span class="operator">.</span> <span class="string">"Incorporate"</span> means to publish <span class="keyword">or</span> republish a Document<span class="operator">,</span> in whole <span class="keyword">or</span> in part<span class="operator">,</span> as part of another Document<span class="operator">.</span> An MMC is <span class="string">"eligible for relicensing"</span> <span class="keyword">if</span> it is licensed under <span class="keyword">this</span> License<span class="operator">,</span> and <span class="keyword">if</span> all works that were first published under <span class="keyword">this</span> License somewhere other than <span class="keyword">this</span> MMC<span class="operator">,</span> and subsequently incorporated in whole <span class="keyword">or</span> in part into the MMC<span class="operator">,</span> (<span class="number">1</span>) had no cover texts <span class="keyword">or</span> invariant sections<span class="operator">,</span> and (<span class="number">2</span>) were thus incorporated prior to November <span class="number">1</span><span class="operator">,</span> <span class="number">2008.</span> The <span class="keyword">operator</span> of an MMC Site may republish an MMC contained in the site under CC<span class="operator">-</span>BY<span class="operator">-</span>SA on the same site at any time before August <span class="number">1</span><span class="operator">,</span> <span class="number">2009</span><span class="operator">,</span> provided the MMC is eligible <span class="keyword">for</span> relicensing<span class="operator">.</span> ADDENDUM: How to use <span class="keyword">this</span> License <span class="keyword">for</span> your documents To use <span class="keyword">this</span> License in a document you have written<span class="operator">,</span> <span class="keyword">include</span> a copy of the License in the document and put the following copyright and license notices just after the title page: Copyright (c) YEAR YOUR NAME<span class="operator">.</span> Permission is granted to copy<span class="operator">,</span> distribute and<span class="operator">/</span><span class="keyword">or</span> modify <span class="keyword">this</span> document under the terms of the GNU Free Documentation License<span class="operator">,</span> Version <span class="number">1.3</span> <span class="keyword">or</span> any later version published by the Free Software Foundation; 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