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	<title>GNU libtextstyle: A. Licenses</title>

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	<tr><td valign="middle" align="left">[<a href="libtextstyle_3.html#SEC15" title="Beginning of this chapter or previous chapter"> << </a>]</td>
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	<hr size="2">
	<a name="Licenses"></a>
	<a name="SEC38"></a>
	<h1 class="appendix"> <a href="libtextstyle_toc.html#TOC38">A. Licenses</a> </h1>

	<p>The files of this package are covered by the licenses indicated in each
	particular file or directory. Here is a summary:
	</p>
	<ul>
	<li>
	The <code>libtextstyle</code> library and the example programs
	are covered by the GNU General Public License (GPL).
	A copy of the license is included in <a href="#SEC39">GNU GENERAL PUBLIC LICENSE</a>.

	</li><li>
	This manual is free documentation. It is dually licensed under the
	GNU FDL and the GNU GPL. This means that you can redistribute this
	manual under either of these two licenses, at your choice.
	<br>
	This manual is covered by the GNU FDL. Permission is granted to copy,
	distribute and/or modify this document under the terms of the
	GNU Free Documentation License (FDL), either version 1.2 of the
	License, or (at your option) any later version published by the
	Free Software Foundation (FSF); with no Invariant Sections, with no
	Front-Cover Text, and with no Back-Cover Texts.
	A copy of the license is included in <a href="#SEC44">GNU Free Documentation License</a>.
	<br>
	This manual is covered by the GNU GPL. You can redistribute it and/or
	modify it under the terms of the GNU General Public License (GPL), either
	version 3 of the License, or (at your option) any later version published
	by the Free Software Foundation (FSF).
	A copy of the license is included in <a href="#SEC39">GNU GENERAL PUBLIC LICENSE</a>.
	</li></ul>




	<a name="GNU-GPL"></a>
	<a name="SEC39"></a>
	<h2 class="appendixsec"> <a href="libtextstyle_toc.html#TOC39">A.1 GNU GENERAL PUBLIC LICENSE</a> </h2>
	<p align="center"> Version 3, 29 June 2007
	</p>

	<table><tr><td> </td><td><pre class="display">Copyright © 2007 Free Software Foundation, Inc. <a href="https://fsf.org/">https://fsf.org/</a>

	Everyone is permitted to copy and distribute verbatim copies of this
	license document, but changing it is not allowed.
	</pre></td></tr></table>

	<a name="SEC40"></a>
	<h2 class="heading"> Preamble </h2>

	<p>The GNU General Public License is a free, copyleft license for
	software and other kinds of works.
	</p>
	<p>The licenses for most software and other practical works are designed
	to take away your freedom to share and change the works. By contrast,
	the GNU General Public License is intended to guarantee your freedom
	to share and change all versions of a program—to make sure it remains
	free software for all its users. We, the Free Software Foundation,
	use the GNU General Public License for most of our software; it
	applies also to any other work released this way by its authors. You
	can apply it to your programs, too.
	</p>
	<p>When we speak of free software, we are referring to freedom, not
	price. Our General Public Licenses are designed to make sure that you
	have the freedom to distribute copies of free software (and charge for
	them if you wish), that you receive source code or can get it if you
	want it, that you can change the software or use pieces of it in new
	free programs, and that you know you can do these things.
	</p>
	<p>To protect your rights, we need to prevent others from denying you
	these rights or asking you to surrender the rights. Therefore, you
	have certain responsibilities if you distribute copies of the
	software, or if you modify it: responsibilities to respect the freedom
	of others.
	</p>
	<p>For example, if you distribute copies of such a program, whether
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	terms so they know their rights.
	</p>
	<p>Developers that use the GNU GPL protect your rights with two steps:
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	<p>For the developers' and authors' protection, the GPL clearly explains
	that there is no warranty for this free software. For both users' and
	authors' sake, the GPL requires that modified versions be marked as
	changed, so that their problems will not be attributed erroneously to
	authors of previous versions.
	</p>
	<p>Some devices are designed to deny users access to install or run
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	Therefore, we have designed this version of the GPL to prohibit the
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	</p>
	<p>Finally, every program is threatened constantly by software patents.
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	</p>
	<p>The precise terms and conditions for copying, distribution and
	modification follow.
	</p>
	<a name="SEC41"></a>
	<h2 class="heading"> TERMS AND CONDITIONS </h2>

	<ol>
	<li> Definitions.

	<p>“This License” refers to version 3 of the GNU General Public License.
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	The work must carry prominent notices stating that you modified it,
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	You must license the entire work, as a whole, under this License to
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	</li><li>
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	</li><li>
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	</li></ol>

	<p>A separable portion of the object code, whose source code is excluded
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	<p>A “User Product” is either (1) a “consumer product”, which means any
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	work thus licensed is called the contributor's “contributor version”.
	</p>
	<p>A contributor's “essential patent claims” are all patent claims owned
	or controlled by the contributor, whether already acquired or
	hereafter acquired, that would be infringed by some manner, permitted
	by this License, of making, using, or selling its contributor version,
	but do not include claims that would be infringed only as a
	consequence of further modification of the contributor version. For
	purposes of this definition, “control” includes the right to grant
	patent sublicenses in a manner consistent with the requirements of
	this License.
	</p>
	<p>Each contributor grants you a non-exclusive, worldwide, royalty-free
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	make, use, sell, offer for sale, import and otherwise run, modify and
	propagate the contents of its contributor version.
	</p>
	<p>In the following three paragraphs, a “patent license” is any express
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	(such as an express permission to practice a patent or covenant not to
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	patent against the party.
	</p>
	<p>If you convey a covered work, knowingly relying on a patent license,
	and the Corresponding Source of the work is not available for anyone
	to copy, free of charge and under the terms of this License, through a
	publicly available network server or other readily accessible means,
	then you must either (1) cause the Corresponding Source to be so
	available, or (2) arrange to deprive yourself of the benefit of the
	patent license for this particular work, or (3) arrange, in a manner
	consistent with the requirements of this License, to extend the patent
	license to downstream recipients. “Knowingly relying” means you have
	actual knowledge that, but for the patent license, your conveying the
	covered work in a country, or your recipient's use of the covered work
	in a country, would infringe one or more identifiable patents in that
	country that you have reason to believe are valid.
	</p>
	<p>If, pursuant to or in connection with a single transaction or
	arrangement, you convey, or propagate by procuring conveyance of, a
	covered work, and grant a patent license to some of the parties
	receiving the covered work authorizing them to use, propagate, modify
	or convey a specific copy of the covered work, then the patent license
	you grant is automatically extended to all recipients of the covered
	work and works based on it.
	</p>
	<p>A patent license is “discriminatory” if it does not include within the
	scope of its coverage, prohibits the exercise of, or is conditioned on
	the non-exercise of one or more of the rights that are specifically
	granted under this License. You may not convey a covered work if you
	are a party to an arrangement with a third party that is in the
	business of distributing software, under which you make payment to the
	third party based on the extent of your activity of conveying the
	work, and under which the third party grants, to any of the parties
	who would receive the covered work from you, a discriminatory patent
	license (a) in connection with copies of the covered work conveyed by
	you (or copies made from those copies), or (b) primarily for and in
	connection with specific products or compilations that contain the
	covered work, unless you entered into that arrangement, or that patent
	license was granted, prior to 28 March 2007.
	</p>
	<p>Nothing in this License shall be construed as excluding or limiting
	any implied license or other defenses to infringement that may
	otherwise be available to you under applicable patent law.
	</p>
	</li><li> No Surrender of Others' Freedom.

	<p>If conditions are imposed on you (whether by court order, agreement or
	otherwise) that contradict the conditions of this License, they do not
	excuse you from the conditions of this License. If you cannot convey
	a covered work so as to satisfy simultaneously your obligations under
	this License and any other pertinent obligations, then as a
	consequence you may not convey it at all. For example, if you agree
	to terms that obligate you to collect a royalty for further conveying
	from those to whom you convey the Program, the only way you could
	satisfy both those terms and this License would be to refrain entirely
	from conveying the Program.
	</p>
	</li><li> Use with the GNU Affero General Public License.

	<p>Notwithstanding any other provision of this License, you have
	permission to link or combine any covered work with a work licensed
	under version 3 of the GNU Affero General Public License into a single
	combined work, and to convey the resulting work. The terms of this
	License will continue to apply to the part which is the covered work,
	but the special requirements of the GNU Affero General Public License,
	section 13, concerning interaction through a network will apply to the
	combination as such.
	</p>
	</li><li> Revised Versions of this License.

	<p>The Free Software Foundation may publish revised and/or new versions
	of the GNU General Public 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.
	</p>
	<p>Each version is given a distinguishing version number. If the Program
	specifies that a certain numbered version of the GNU General Public
	License “or any later version” applies to it, you have the option of
	following the terms and conditions either of that numbered version or
	of any later version published by the Free Software Foundation. If
	the Program does not specify a version number of the GNU General
	Public License, you may choose any version ever published by the Free
	Software Foundation.
	</p>
	<p>If the Program specifies that a proxy can decide which future versions
	of the GNU General Public License can be used, that proxy's public
	statement of acceptance of a version permanently authorizes you to
	choose that version for the Program.
	</p>
	<p>Later license versions may give you additional or different
	permissions. However, no additional obligations are imposed on any
	author or copyright holder as a result of your choosing to follow a
	later version.
	</p>
	</li><li> Disclaimer of Warranty.

	<p>THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
	APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
	HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT
	WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
	LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
	PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
	DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
	CORRECTION.
	</p>
	</li><li> Limitation of Liability.

	<p>IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
	WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
	CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
	INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
	ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
	NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
	LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
	TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
	PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
	</p>
	</li><li> Interpretation of Sections 15 and 16.

	<p>If the disclaimer of warranty and limitation of liability provided
	above cannot be given local legal effect according to their terms,
	reviewing courts shall apply local law that most closely approximates
	an absolute waiver of all civil liability in connection with the
	Program, unless a warranty or assumption of liability accompanies a
	copy of the Program in return for a fee.
	</p>
	</li></ol>

	<a name="SEC42"></a>
	<h2 class="heading"> END OF TERMS AND CONDITIONS </h2>

	<a name="SEC43"></a>
	<h2 class="heading"> How to Apply These Terms to Your New Programs </h2>

	<p>If you develop a new program, and you want it to be of the greatest
	possible use to the public, the best way to achieve this is to make it
	free software which everyone can redistribute and change under these
	terms.
	</p>
	<p>To do so, attach the following notices to the program. It is safest
	to attach them to the start of each source file to most effectively
	state the exclusion of warranty; and each file should have at least
	the “copyright” line and a pointer to where the full notice is found.
	</p>
	<table><tr><td> </td><td><pre class="smallexample"><var>one line to give the program's name and a brief idea of what it does.</var>
	Copyright (C) <var>year</var> <var>name of author</var>

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or (at
	your option) any later version.

	This program is distributed in the hope that it will be useful, but
	WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program. If not, see <a href="https://www.gnu.org/licenses/">https://www.gnu.org/licenses/</a>.
	</pre></td></tr></table>

	<p>Also add information on how to contact you by electronic and paper mail.
	</p>
	<p>If the program does terminal interaction, make it output a short
	notice like this when it starts in an interactive mode:
	</p>
	<table><tr><td> </td><td><pre class="smallexample"><var>program</var> Copyright (C) <var>year</var> <var>name of author</var>
	This program comes with ABSOLUTELY NO WARRANTY; for details type ‘<samp>show w</samp>’.
	This is free software, and you are welcome to redistribute it
	under certain conditions; type ‘<samp>show c</samp>’ for details.
	</pre></td></tr></table>

	<p>The hypothetical commands ‘<samp>show w</samp>’ and ‘<samp>show c</samp>’ should show
	the appropriate parts of the General Public License. Of course, your
	program's commands might be different; for a GUI interface, you would
	use an “about box”.
	</p>
	<p>You should also get your employer (if you work as a programmer) or school,
	if any, to sign a “copyright disclaimer” for the program, if necessary.
	For more information on this, and how to apply and follow the GNU GPL, see
	<a href="https://www.gnu.org/licenses/">https://www.gnu.org/licenses/</a>.
	</p>
	<p>The GNU General Public License does not permit incorporating your
	program into proprietary programs. If your program is a subroutine
	library, you may consider it more useful to permit linking proprietary
	applications with the library. If this is what you want to do, use
	the GNU Lesser General Public License instead of this License. But
	first, please read <a href="https://www.gnu.org/licenses/why-not-lgpl.html">https://www.gnu.org/licenses/why-not-lgpl.html</a>.

	</p>
	<a name="GNU-FDL"></a>
	<a name="SEC44"></a>
	<h2 class="appendixsec"> <a href="libtextstyle_toc.html#TOC40">A.2 GNU Free Documentation License</a> </h2>
	<p align="center"> Version 1.3, 3 November 2008
	</p>

	<table><tr><td> </td><td><pre class="display">Copyright © 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
	<a href="https://fsf.org/">https://fsf.org/</a>

	Everyone is permitted to copy and distribute verbatim copies
	of this license document, but changing it is not allowed.
	</pre></td></tr></table>

	<ol>
	<li>
	PREAMBLE

	<p>The purpose of this License is to make a manual, textbook, or other
	functional and useful document <em>free</em> in the sense of freedom: to
	assure everyone the effective freedom to copy and redistribute it,
	with or without modifying it, either commercially or noncommercially.
	Secondarily, this License preserves for the author and publisher a way
	to get credit for their work, while not being considered responsible
	for modifications made by others.
	</p>
	<p>This License is a kind of “copyleft”, which means that derivative
	works of the document must themselves be free in the same sense. It
	complements the GNU General Public License, which is a copyleft
	license designed for free software.
	</p>
	<p>We have designed this License in order to use it for manuals for free
	software, because free software needs free documentation: a free
	program should come with manuals providing the same freedoms that the
	software does. But this License is not limited to software manuals;
	it can be used for any textual work, regardless of subject matter or
	whether it is published as a printed book. We recommend this License
	principally for works whose purpose is instruction or reference.
	</p>
	</li><li>
	APPLICABILITY AND DEFINITIONS

	<p>This License applies to any manual or other work, in any medium, that
	contains a notice placed by the copyright holder saying it can be
	distributed under the terms of this License. Such a notice grants a
	world-wide, royalty-free license, unlimited in duration, to use that
	work under the conditions stated herein. The “Document”, below,
	refers to any such manual or work. Any member of the public is a
	licensee, and is addressed as “you”. You accept the license if you
	copy, modify or distribute the work in a way requiring permission
	under copyright law.
	</p>
	<p>A “Modified Version” of the Document means any work containing the
	Document or a portion of it, either copied verbatim, or with
	modifications and/or translated into another language.
	</p>
	<p>A “Secondary Section” is a named appendix or a front-matter section
	of the Document that deals exclusively with the relationship of the
	publishers or authors of the Document to the Document'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.
	</p>
	<p>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.
	</p>
	<p>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.
	</p>
	<p>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
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	to text formatters. A copy made in an otherwise Transparent file
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	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”.
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	<p>Examples of suitable formats for Transparent copies include plain
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	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
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	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.
	</p>
	<p>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's title,
	preceding the beginning of the body of the text.
	</p>
	<p>The “publisher” means any person or entity that distributes copies
	of the Document to the public.
	</p>
	<p>A section “Entitled XYZ” means a named subunit of the Document whose
	title either is precisely XYZ or contains XYZ in parentheses following
	text that translates XYZ in another language. (Here XYZ stands for a
	specific section name mentioned below, such as “Acknowledgements”,
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	of such a section when you modify the Document means that it remains a
	section “Entitled XYZ” according to this definition.
	</p>
	<p>The Document may include Warranty Disclaimers next to the notice which
	states that this License applies to the Document. These Warranty
	Disclaimers are considered to be included by reference in this
	License, but only as regards disclaiming warranties: any other
	implication that these Warranty Disclaimers may have is void and has
	no effect on the meaning of this License.
	</p>
	</li><li>
	VERBATIM COPYING

	<p>You may copy and distribute the Document in any medium, either
	commercially or noncommercially, provided that this License, the
	copyright notices, and the license notice saying this License applies
	to the Document are reproduced in all copies, and that you add no other
	conditions whatsoever to those of this License. You may not use
	technical measures to obstruct or control the reading or further
	copying of the copies you make or distribute. However, you may accept
	compensation in exchange for copies. If you distribute a large enough
	number of copies you must also follow the conditions in section 3.
	</p>
	<p>You may also lend copies, under the same conditions stated above, and
	you may publicly display copies.
	</p>
	</li><li>
	COPYING IN QUANTITY

	<p>If you publish printed copies (or copies in media that commonly have
	printed covers) of the Document, numbering more than 100, and the
	Document'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.
	</p>
	<p>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.
	</p>
	<p>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.
	</p>
	<p>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.
	</p>
	</li><li>
	MODIFICATIONS

	<p>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:
	</p>
	<ol>
	<li>
	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.

	</li><li>
	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.

	</li><li>
	State on the Title page the name of the publisher of the
	Modified Version, as the publisher.

	</li><li>
	Preserve all the copyright notices of the Document.

	</li><li>
	Add an appropriate copyright notice for your modifications
	adjacent to the other copyright notices.

	</li><li>
	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.

	</li><li>
	Preserve in that license notice the full lists of Invariant Sections
	and required Cover Texts given in the Document's license notice.

	</li><li>
	Include an unaltered copy of this License.

	</li><li>
	Preserve the section Entitled “History”, Preserve its Title, and add
	to it an item stating at least the title, year, new authors, and
	publisher of the Modified Version as given on the Title Page. If
	there is no section Entitled “History” in the Document, create one
	stating the title, year, authors, and publisher of the Document as
	given on its Title Page, then add an item describing the Modified
	Version as stated in the previous sentence.

	</li><li>
	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.

	</li><li>
	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.

	</li><li>
	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.

	</li><li>
	Delete any section Entitled “Endorsements”. Such a section
	may not be included in the Modified Version.

	</li><li>
	Do not retitle any existing section to be Entitled “Endorsements” or
	to conflict in title with any Invariant Section.

	</li><li>
	Preserve any Warranty Disclaimers.
	</li></ol>

	<p>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.
	</p>
	<p>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.
	</p>
	<p>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.
	</p>
	<p>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.
	</p>
	</li><li>
	COMBINING DOCUMENTS

	<p>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.
	</p>
	<p>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.
	</p>
	<p>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.”
	</p>
	</li><li>
	COLLECTIONS OF DOCUMENTS

	<p>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.
	</p>
	<p>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.
	</p>
	</li><li>
	AGGREGATION WITH INDEPENDENT WORKS

	<p>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.
	</p>
	<p>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.
	</p>
	</li><li>
	TRANSLATION

	<p>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.
	</p>
	<p>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.
	</p>
	</li><li>
	TERMINATION

	<p>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.
	</p>
	<p>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.
	</p>
	<p>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.
	</p>
	<p>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.
	</p>
	</li><li>
	FUTURE REVISIONS OF THIS LICENSE

	<p>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
	<a href="https://www.gnu.org/licenses/">https://www.gnu.org/licenses/</a>.
	</p>
	<p>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.
	</p>
	</li><li>
	RELICENSING

	<p>“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.
	</p>
	<p>“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.
	</p>
	<p>“Incorporate” means to publish or republish a Document, in whole or
	in part, as part of another Document.
	</p>
	<p>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.
	</p>
	<p>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.
	</p>
	</li></ol>


	<a name="SEC45"></a>
	<h2 class="heading"> ADDENDUM: How to use this License for your documents </h2>

	<p>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:
	</p>
	<table><tr><td> </td><td><pre class="smallexample"> Copyright (C) <var>year</var> <var>your name</var>.
	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''.
	</pre></td></tr></table>

	<p>If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
	replace the “with…Texts.” line with this:
	</p>
	<table><tr><td> </td><td><pre class="smallexample"> with the Invariant Sections being <var>list their titles</var>, with
	the Front-Cover Texts being <var>list</var>, and with the Back-Cover Texts
	being <var>list</var>.
	</pre></td></tr></table>

	<p>If you have Invariant Sections without Cover Texts, or some other
	combination of the three, merge those two alternatives to suit the
	situation.
	</p>
	<p>If your document contains nontrivial examples of program code, we
	recommend releasing these examples in parallel under your choice of
	free software license, such as the GNU General Public License,
	to permit their use in free software.
	</p>


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