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<section id="licenses-gfdl-section-2" xreflabel="Applicability and definitions">
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    <title>Applicability and definitions</title>
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    <para>This License applies to any manual or other work, in any
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    medium, that contains a notice placed by the copyright holder
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    saying it can be distributed under the terms of this License.
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    Such a notice grants a world-wide, royalty-free license, unlimited
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    in duration, to use that work under the conditions stated herein.
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    The <quote>Document</quote>, below, refers to any such manual or
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    work.  Any member of the public is a licensee, and is addressed as
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    <quote>you</quote>.  You accept the license if you copy, modify or
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    distribute the work in a way requiring permission under copyright
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    law.</para>
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    <para>A <quote>Modified Version</quote> of the Document means any
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    work containing the Document or a portion of it, either copied
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    verbatim, or with modifications and/or translated into another
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    language.</para>
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    <para>A <quote>Secondary Section</quote> is a named appendix or a
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    front-matter section of the Document that deals exclusively with
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    the relationship of the publishers or authors of the Document to
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    the Document's overall subject (or to related matters) and
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    contains nothing that could fall directly within that overall
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    subject.  (Thus, if the Document is in part a textbook of
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    mathematics, a Secondary Section may not explain any mathematics.)
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    The relationship could be a matter of historical connection with
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    the subject or with related matters, or of legal, commercial,
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    philosophical, ethical or political position regarding
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    them.</para>
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    <para>The <quote>Invariant Sections</quote> are certain Secondary Sections
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    whose titles are designated, as being those of Invariant Sections,
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    in the notice that says that the Document is released under this
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    License.  If a section does not fit the above definition of
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    Secondary then it is not allowed to be designated as Invariant.
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    The Document may contain zero Invariant Sections.  If the Document
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    does not identify any Invariant Sections then there are
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    none.</para>
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    <para>The <quote>Cover Texts</quote> are certain short passages of text that
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    are listed, as Front-Cover Texts or Back-Cover Texts, in the
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    notice that says that the Document is released under this License.
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    A Front-Cover Text may be at most 5 words, and a Back-Cover Text
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    may be at most 25 words.</para>
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    <para>A <quote>Transparent</quote> copy of the Document means a
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    machine-readable copy, represented in a format whose specification
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    is available to the general public, that is suitable for revising
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    the document straightforwardly with generic text editors or (for
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    images composed of pixels) generic paint programs or (for
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    drawings) some widely available drawing editor, and that is
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    suitable for input to text formatters or for automatic translation
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    to a variety of formats suitable for input to text formatters.  A
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    copy made in an otherwise Transparent file format whose markup, or
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    absence of markup, has been arranged to thwart or discourage
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    subsequent modification by readers is not Transparent.  An image
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    format is not Transparent if used for any substantial amount of
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    text.  A copy that is not <quote>Transparent</quote> is called
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    <quote>Opaque</quote>.</para>
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    <para>Examples of suitable formats for Transparent copies include
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    plain ASCII without markup, Texinfo input format, LaTeX input
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    format, SGML or XML using a publicly available DTD, and
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    standard-conforming simple HTML, PostScript or PDF designed for
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    human modification.  Examples of transparent image formats include
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    PNG, XCF and JPG.  Opaque formats include proprietary formats that
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    can be read and edited only by proprietary word processors, SGML
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    or XML for which the DTD and/or processing tools are not generally
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    available, and the machine-generated HTML, PostScript or PDF
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    produced by some word processors for output purposes only.</para>
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    <para>The <quote>Title Page</quote> means, for a printed book, the
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    title page itself, plus such following pages as are needed to
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    hold, legibly, the material this License requires to appear in the
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    title page.  For works in formats which do not have any title page
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    as such, <quote>Title Page</quote> means the text near the most
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    prominent appearance of the work's title, preceding the beginning
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    of the body of the text.</para>
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    <para>A section <quote>Entitled XYZ</quote> means a named subunit
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    of the Document whose title either is precisely XYZ or contains
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    XYZ in parentheses following text that translates XYZ in another
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    language.  (Here XYZ stands for a specific section name mentioned
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    below, such as <quote>Acknowledgements</quote>,
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    <quote>Dedications</quote>, <quote>Endorsements</quote>, or
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    <quote>History</quote>.) To <quote>Preserve the Title</quote> of
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    such a section when you modify the Document means that it remains
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    a section <quote>Entitled XYZ</quote> according to this
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    definition.</para>
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    <para>The Document may include Warranty Disclaimers next to the
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    notice which states that this License applies to the Document.
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    These Warranty Disclaimers are considered to be included by
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    reference in this License, but only as regards disclaiming
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    warranties: any other implication that these Warranty Disclaimers
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    may have is void and has no effect on the meaning of this
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    License.</para>
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</section>