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<appendix id="gfdl">
<title>GNU Free Documentation License</title>




    <!-- - GNU Project - Free Software Foundation (FSF) -->
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    <title>GNU Free Documentation License</title -->
<para>Version 1.1, March 2000</para>

    <blockquote>
      <para>Copyright (C) 2000 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>

  <section label="0">
    <title>PREAMBLE</title>

    <para>The purpose of this License is to make a manual, textbook, or other written
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 non-commercially.  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>
  </section>

  <section label="1">
    <title>APPLICABILITY AND DEFINITIONS</title>

    <para>This License applies to any manual or other work that contains a notice
placed by the copyright holder saying it can be distributed under the terms
of this License.  The "Document", below, refers to any such manual or work.
Any member of the public is a licensee, and is addressed as "you".</para>

    <para>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>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.  (For example, 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>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.</para>

    <para>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.</para>

    <para>A "Transparent" copy of the Document means a machine-readable copy,
represented in a format whose specification is available to the general
public, whose contents can be viewed and edited directly and
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 has been designed to thwart or discourage subsequent modification by
readers is not Transparent. 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 designed for
human modification.  Opaque formats include: PostScript, PDF, 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 produced by some word processors
for output purposes only.</para>

    <para>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>
  </section>

  <section label="2">
    <title>VERBATIM COPYING</title>

    <para>You may copy and distribute the Document in any medium, either commercially
or non-commercially, 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.</para>

    <para>You may also lend copies, under the same conditions stated above, and you
may publicly display copies.</para>
  </section>

  <section label="3">
    <title>COPYING IN QUANTITY</title>

    <para>If you publish printed copies 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
publicly-accessible computer-network location, containing a complete
Transparent copy of the Document, free of added material, which the general
network-using public has access to download anonymously, at no charge, using
public-standard network protocols.  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>
  </section>

  <section label="4">
    <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 numeration="upperalpha">
      <listitem><para>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.</para>
      </listitem>

      <listitem><para>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 less than five).</para>
      </listitem>

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

      <listitem><para>Preserve all the copyright notices of the Document.</para>
      </listitem>

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

      <listitem><para>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.</para>
      </listitem>

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

      <listitem><para>Include an unaltered copy of this License.</para>
      </listitem>

      <listitem><para>Preserve the section entitled "History", and 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.</para>
      </listitem>

      <listitem><para>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.</para>
      </listitem>

      <listitem><para>In any section entitled "Acknowledgements" or "Dedications", preserve the
section's title, and preserve in the section all the substance and tone of
each of the contributor acknowledgements and/or dedications given therein.</para>
      </listitem>

      <listitem><para>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.</para>
      </listitem>

      <listitem><para>Delete any section entitled "Endorsements".  Such a section may not be
included in the Modified Version.</para>
      </listitem>

      <listitem><para>Do not retitle any existing section as "Endorsements" or to conflict in
title with any Invariant Section.</para>
      </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 or to assert or imply
endorsement of any Modified Version.</para>
  </section>

  <section label="5">
    <title>COMBINING DOCUMENTS</title>

    <para>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.</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>
  </section>

  <section label="6">
    <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 all other 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>
  </section>

  <section label="7">
    <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, does not as a whole count as a Modified Version of the
Document, provided no compilation copyright is claimed for the
compilation. Such a compilation is called an "aggregate", and this License
does not apply to the other self-contained works thus compiled with the
Document, on account of their being thus compiled, if they 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 quarter of the entire
aggregate, the Document's Cover Texts may be placed on covers that surround
only the Document within the aggregate. Otherwise they must appear on covers
around the whole aggregate.</para>
  </section>

  <section label="8">
    <title>Übersetzung</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 provided that you
also include the original English version of this License. In case of a
disagreement between the translation and the original English version of
this License, the original English version will prevail.</para>
  </section>

  <section label="9">
    <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>
  </section>

  <section label="10">
    <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 <ulink
url="http://www.gnu.org/copyleft/">http://www.gnu.org/copyleft/</ulink>.</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>
  </section>

  <section label="">
    <title>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 copyright and license notices
just after the title page:</para>

<blockquote><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 1.1 or any later version published by the Free Software
Foundation; with the Invariant Sections being LIST THEIR TITLES, with the
Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST.  A
copy of the license is included in the section entitled "GNU Free
Documentation License".
</para></blockquote>

    <para>If you have no Invariant Sections, write "with no Invariant Sections"
instead of saying which ones are invariant.  If you have no Front-Cover
Texts, write "no Front-Cover Texts" instead of "Front-Cover Texts being
LIST"; likewise for Back-Cover Texts.</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>
  </section>

</appendix>

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