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<appendix id="legal">
<!--<appendix id="legal" lang="de;en;cs;fr;it;sv;zh_CN;nl">-->
  <title>
    <phrase lang="en">GNU Free Documentation License</phrase>
    <phrase lang="cs">GNU Free Documentation License</phrase>
    <phrase lang="de">Rechtliches</phrase>
    <phrase lang="fr">Licence d'utilisation</phrase>
    <phrase lang="it">Licenza d'utilizzo</phrase>
    <phrase lang="nl">Gebruikerslicentie</phrase>
    <phrase lang="ru">GNU Free Documentation License</phrase>
    <phrase lang="sv">Juridik</phrase>
    <phrase lang="zh_CN">GNU 自由文档许可证</phrase>
  </title>
  <subtitle>Version 1.2, November 2002</subtitle>

  <anchor id='gfdl' />

  <blockquote id="fsf-copyright">
    <title />
    <para>Copyright (C) 2000,2001,2002  Free Software Foundation, Inc.
      59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
      Everyone is permitted to copy and distribute verbatim copies
      of this license document, but changing it is not allowed.
    </para>
  </blockquote>
  
  <simplesect id="gfdl-0" role="NotInToc">
    <title>PREAMBLE</title>
    
    <para>
      The purpose of this License is to make a manual, textbook, or other
      functional and useful document "free" 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.
    </para>
    
    <para>
      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.
    </para>
    
    <para>
      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.
    </para>
  </simplesect>
  
  <simplesect id="gfdl-1" role="NotInToc">
    <title>APPLICABILITY AND DEFINITIONS</title>
    
    <para id="gfdl-doc">
      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.
    </para>
    
    <para id="gfdl-mod-ver">
      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.
    </para>
    
    <para id="gfdl-secnd-sect">
      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.
    </para>
    
    <para id="gfdl-inv-sect">
      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.
    </para>
    
    <para id="gfdl-cov-text">
      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.
    </para>
    
    <para id="gfdl-transparent">
      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 revisingthe 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".
    </para>
    
    <para>
      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.
    </para>
    
    <para id="gfdl-title-page">
      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.
    </para>
    
    <para id="gfdl-entitled">
      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", "Dedications", "Endorsements", or "History".) To
      "Preserve the Title" of such a section when you modify the Document
      means that it remains a section "Entitled XYZ" according to this
      definition.
    </para>
    
    <para>
      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.
    </para>
  </simplesect>
  
  <simplesect id="gfdl-2" role="NotInToc">
    <title>VERBATIM COPYING</title>
    
    <para>
      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
      section3.
    </para>
    
    <para>
      You may also lend copies, under the same conditions stated above,
      and you may publicly display copies.
    </para>
  </simplesect>
  
  <simplesect id="gfdl-3" role="NotInToc">
    <title>COPYING IN QUANTITY</title>
    
    <para>
      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.
    </para>
    
    <para>
      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.
    </para>
    
    <para>
      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.
    </para>
    
    <para>
      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.
    </para>
  </simplesect>
  
  <simplesect id="gfdl-4" role="NotInToc">
    <title>MODIFICATIONS</title>
    
    <para>
      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:
    </para>
    
    <orderedlist id="gfdl-modif-cond" numeration="upperalpha">
      <title />
      <listitem>
        <simpara>
          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.
        </simpara>
      </listitem>
      <listitem>
        <simpara>
          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.
        </simpara>
      </listitem>
      <listitem>
        <simpara>
          State on the Title page the name of the publisher of the Modified
          Version, as the publisher.
        </simpara>
      </listitem>
      <listitem>
        <simpara>
          Preserve all the copyright notices of the Document.
        </simpara>
      </listitem>
      <listitem>
        <simpara>
          Add an appropriate copyright notice for your
          modifications adjacent to the other copyright notices.
        </simpara>
      </listitem>
      <listitem>
        <simpara>
          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 <link
            linkend="gfdl-addendum">Addendum</link> below.
        </simpara>
      </listitem>
      <listitem>
        <simpara>
          Preserve in that license notice the full lists of Invariant
          Sections and required Cover Texts given in the Document's license
          notice.
        </simpara>
      </listitem>
      <listitem>
        <simpara>
          Include an unaltered copy of this License.
        </simpara>
      </listitem>
      <listitem>
        <simpara>
          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.
        </simpara>
      </listitem>
      <listitem>
        <simpara>
          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.
        </simpara>
      </listitem>
      <listitem>
        <simpara>
          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.
        </simpara>
      </listitem>
      <listitem>
        <simpara>
          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.
        </simpara>
      </listitem>
      <listitem>
        <simpara>
          Delete any section Entitled "Endorsements".  Such a section may
          not be included in the Modified Version.
        </simpara>
      </listitem>
      <listitem>
        <simpara>
          Do not retitle any existing section to be Entitled "Endorsements"
          or to conflict in title with any Invariant Section.
        </simpara>
      </listitem>
      <listitem>
        <simpara>
          Preserve any Warranty Disclaimers.
        </simpara>
      </listitem>
    </orderedlist>
    
    <para>
      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.
    </para>
    
    <para>
      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.
    </para>
    
    <para>
      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.
    </para>
    
    <para>
      The author(s) and publisher(s) of the Document do not by this License
      give permission to use their names for publicity for orto assert or
      imply endorsement of any Modified Version.
    </para>
  </simplesect>
  
  <simplesect id="gfdl-5" role="NotInToc">
    <title>COMBINING DOCUMENTS</title>
    
    <para>
      You may combine the Document with other documents released under this
      License, under the terms defined in <link linkend="gfdl-4">section 4
      </link> 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.
    </para>
    
    <para>
      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.
    </para>
    
    <para>
      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".
    </para>
  </simplesect>
  
  <simplesect id="gfdl-6" role="NotInToc">
    <title>COLLECTIONS OF DOCUMENTS</title>
    
    <para>
      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 allother respects.
    </para>
    
    <para>
      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.
    </para>
  </simplesect>
  
  <simplesect id="gfdl-7" role="NotInToc">
    <title>AGGREGATION WITH INDEPENDENT WORKS</title>
    
    <para>
      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 individualworks 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.
    </para>
    
    <para>
      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.
    </para>
  </simplesect>
  
  <simplesect id="gfdl-8" role="NotInToc">
    <title>TRANSLATION</title>
    
    <para>
      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.
    </para>
    
    <para>
      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.
    </para>
  </simplesect>
  
  <simplesect id="gfdl-9" role="NotInToc">
    <title>TERMINATION</title>
    
    <para>
      You may not copy, modify, sublicense, or distribute the Document
      except as expressly provided for under this License.  Any other
      attempt to copy, modify, sublicense or distribute the Document is
      void, and will automatically terminate your rights under this
      License.  However, parties who have received copies, or rights, from
      you under this License will not have their licenses terminated so
      long as such parties remain in full compliance.
    </para>
  </simplesect>
  
  <simplesect id="gfdl-10" role="NotInToc">
    <title>FUTURE REVISIONS OF THIS LICENSE</title>
    
    <para>
      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/.
    </para>
    
    <para>
      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.
    </para>
  </simplesect>
  
  <simplesect id="gfdl-addendum" role="NotInToc">
    <title>
      ADDENDUM: How to use this License for your documents
    </title>
    
    <para>
      To use this License in a document you have written, include a copy of
      the License in the document and put the following copyrightand
      license notices just after the title page:
    </para>
    
    <blockquote id="copyright-sample">
      <title />
      <para>
        Copyright (c)  YEAR  YOUR NAME.  Permission is granted to copy,
        distribute and/or modify this document under the terms of the GNU
        Free Documentation License, Version 1.2 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".
      </para>
    </blockquote>
    
    <para>
      If you have Invariant Sections, Front-Cover Texts and Back-Cover
      Texts, replace the "with...Texts." line with this:
    </para>
    
    <blockquote id="inv-cover-sample">
      <title />
      <para>
        with the Invariant Sections being LIST THEIR TITLES, with the
        Front-Cover Texts being LIST, and with the Back-Cover Texts
        being LIST.
      </para>
    </blockquote>
    
    <para>
      If you have Invariant Sections without Cover Texts, or some other
      combination of the three, merge those two alternatives to suitthe
      situation.
    </para>
    
    <para>
      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.
    </para>
  </simplesect>
</appendix>
