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Free Documentation License

		GNU Free Documentation License
                                             		  Version 1.2, November 2002
                                             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.
                                             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, 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.
                                             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 book.  We recommend this License
                                             principally for works whose purpose is instruction or reference.
                                             1. APPLICABILITY AND DEFINITIONS
                                             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.
                                             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.
                                             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
                                             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.
                                             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.
                                             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
                                             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".
                                             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.
                                             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.
                                             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.
                                             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.
                                             2. VERBATIM COPYING
                                             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.
                                             You may also lend copies, under the same conditions stated above, 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 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.
                                             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
                                             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.
                                             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.
                                             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 possesses a copy
                                             of it.  In addition, you must do these things in the 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 History section
                                             of the Document).  You may use the same title as a previous version
                                             if the original publisher of that version gives permission.
                                             B. 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.
                                             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 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.
                                             J. 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.
                                             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
                                             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 permit.
                                             When the Document is included an aggregate, this License does not
                                             apply to the other works in the aggregate which are not themselves
                                             derivative works of the Document.
                                             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
                                             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 Warrany 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
                                             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
                                             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.
                                             ADDENDUM: How to use this License for your documents
                                             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:
                                                 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".
                                             If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
                                             replace the "with...Texts." line with this:
                                                 with the Invariant Sections being LIST THEIR TITLES, with the
                                                 Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST.
                                             If you have Invariant Sections without Cover Texts, or some other
                                             combination of the three, merge those two alternatives to suit the
                                             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.

Enter supporting content here

Copyright (c) 2004 Jason Helms.
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".