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Version 1.2, November 2002
Copyright (C) 2000,2001,2002  Free Software Foundation, Inc.
51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
0. PREAMBLE
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,
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considered responsible for modifications made by
others.
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.
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
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1. APPLICABILITY AND DEFINITIONS
This License applies to any manual or other work, in any medium,
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The "Invariant Sections" are certain Secondary Sections whose titles
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The "Cover Texts" are certain short passages of text that are listed,
as Front-Cover Texts or Back-Cover Texts,
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A "Transparent" copy of the Document means a machine-readable
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The "Title Page" means, for a printed book, the title page itself, plus
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A section "Entitled XYZ" means a named subunit of the Document
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"History".) To "Preserve the Title" of such a section when you modify
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section "Entitled XYZ" according to this definition.
The Document may include Warranty Disclaimers next to the notice
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included by reference in this License, but
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these Warranty Disclaimers may have is
void and has no effect on the meaning of this License.
2. VERBATIM COPYING
You may copy and distribute the Document in any medium, either
commercially or noncommercially, provided
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are reproduced in all copies, and that you add no other conditions
whatsoever to those of this License. You
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and you may publicly display copies.
3. COPYING IN QUANTITY
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
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You may add other material on the covers in addition. Copying with
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If the required texts for either cover are too voluminous to fit legibly,
you should put the first ones listed (as
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onto adjacent pages.
If you publish or distribute Opaque copies of the Document
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It is requested, but not required, that you contact the authors of the
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4. MODIFICATIONS
You may copy and distribute a Modified Version of the Document
under the conditions of sections 2 and 3
above, provided that you release the Modified Version under
precisely this License, with the Modified Version
filling the role of the Document, thus licensing distribution and
modification of the Modified Version to whoever
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Modified Version:
A. Use in the Title Page (and on the covers, if any) a title distinct from
that of the Document, and from those
of previous versions (which should, if there were any, be listed in the
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may use the same title as a previous version if the original
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B. List on the Title Page, as authors, one or more persons or
entities responsible for authorship of the
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the principal authors of the Document (all of
its principal authors, if it has fewer than five), unless they release
you from this requirement.
C. State on the Title page the name of the publisher of the Modified
Version, as the publisher.
D. Preserve all the copyright notices of the Document.
E. Add an appropriate copyright notice for your modifications
adjacent to the other copyright notices.
F. Include, immediately after the copyright notices, a license notice
giving the public permission to use the
Modified Version under the terms of this License, in the form shown
in the Addendum below.
G. Preserve in that license notice the full lists of Invariant Sections
and required Cover Texts given in the
Document's license notice.
H. Include an unaltered copy of this License.
I. 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
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as given on its Title Page, then add an item describing the Modified
Version as stated in the previous
sentence.
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public access to a Transparent copy of
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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.
K. 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.
L. 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.
M. Delete any section Entitled "Endorsements". Such a section may
not be included in the Modified
Version.
N. Do not retitle any existing section to be Entitled "Endorsements"
or to conflict in title with any Invariant
Section.
O. Preserve any Warranty Disclaimers.
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.
You may add a section Entitled "Endorsements", provided it
contains nothing but endorsements of your
Modified Version by various parties--for example, statements of peer
review or that the text has been approved
by an organization as the authoritative definition of a standard.
You may add a passage of up to five words as a Front-Cover Text,
and a passage of up to 25 words as a
Back-Cover Text, to the end of the list of Cover Texts in the Modified
Version. Only one passage of Front-Cover
Text and one of Back-Cover Text may be added by (or through
arrangements made by) any one entity. If the
Document already includes a cover text for the same cover,
previously added by you or by arrangement made
by the same entity you are acting on behalf of, you may not add
another; but you may replace the old one, on
explicit permission from the previous publisher that added the old
one.
The author(s) and publisher(s) of the Document do not by this
License give permission to use their names for
publicity for or to assert or imply endorsement of any Modified
Version.
5. COMBINING DOCUMENTS
You may combine the Document with other documents released
under this License, under the terms defined
in section 4 above for modified versions, provided that you include in
the combination all of the Invariant
Sections of all of the original documents, unmodified, and list them
all as Invariant Sections of your combined
work in its license notice, and that you preserve all their Warranty
Disclaimers.
The combined work need only contain one copy of this License, and
multiple identical Invariant Sections may
be replaced with a single copy. If there are multiple Invariant
Sections with the same name but different
contents, make the title of each such section unique by adding at
the end of it, in parentheses, the name of
the original author or publisher of that section if known, or else a
unique number. Make the same adjustment
to the section titles in the list of Invariant Sections in the license
notice of the combined work.
In the combination, you must combine any sections Entitled
"History" in the various original documents,
forming one section Entitled "History"; likewise combine any
sections Entitled "Acknowledgements", and any
sections Entitled "Dedications". You must delete all sections
Entitled "Endorsements."
6. COLLECTIONS OF DOCUMENTS
You may make a collection consisting of the Document and other
documents released under this License,
and replace the individual copies of this License in the various
documents with a single copy that is included
in the collection, provided that you follow the rules of this License for
verbatim copying of each of the
documents in all other respects.
You may extract a single document from such a collection, and
distribute it individually under this License,
provided you insert a copy of this License into the extracted
document, and follow this License in all other
respects regarding verbatim copying of that document.
7. AGGREGATION WITH INDEPENDENT WORKS
A compilation of the Document or its derivatives with other separate
and independent documents or works, in
or on a volume of a storage or distribution medium, is called an
"aggregate" if the copyright resulting from the
compilation is not used to limit the legal rights of the compilation's
users beyond what the individual works
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License does not apply to the other works in the
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Document.
If the Cover Text requirement of section 3 is applicable to these
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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.
8. TRANSLATION
Translation is considered a kind of modification, so you may
distribute translations of the Document under the
terms of section 4. Replacing Invariant Sections with translations
requires special permission from their
copyright holders, but you may include translations of some or all
Invariant Sections in addition to the original
versions of these Invariant Sections. You may include a translation
of this License, and all the license notices
in the Document, and any Warranty Disclaimers, provided that you
also include the original English version of
this License and the original versions of those notices and
disclaimers. In case of a disagreement between
the translation and the original version of this License or a notice or
disclaimer, the original version will prevail.

If a section in the Document is Entitled "Acknowledgements",
"Dedications", or "History", the requirement
(section 4) to Preserve its Title (section 1) will typically require
changing the actual title.
9. TERMINATION
You may not copy, modify, sublicense, or distribute the Document
except as expressly provided 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.
10. FUTURE REVISIONS OF THIS LICENSE
The Free Software Foundation may publish new, revised versions of
the GNU Free Documentation License
from time to time. Such new versions will be similar in spirit to the
present version, but may differ in detail to
address new problems or concerns. See
http://www.gnu.org/copyleft/.
Each version of the License is given a distinguishing version
number. If the Document specifies that a
particular numbered version of this License "or any later version"
applies to it, you have the option of following
the terms and conditions either of that specified version or of any
later version that has been published (not
as a draft) by the Free Software Foundation. If the Document does
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License, you may choose any version ever published (not as a draft)
by the Free Software Foundation.
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