//**
GNU Free Documentation License v1.3 or later
https://spdx.org/licenses/GFDL-1.3-or-later.json
https://www.gnu.org/licenses/fdl-1.3.txt
**//

((
	GNU Free Documentation License Version 1.3, 3 November 2008
	{{template "fsf-copyright-block"}}
))??

   ((0. || 1.))??
   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 them.

   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.

   The "publisher" means any person or entity that distributes copies of the
   Document to the public.

   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.

   __1__ 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.

   __1__ 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 pages.

   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.

   __1__ 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:

      __1__ 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.

      __1__ 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.

      __1__ State on the Title page the name of the publisher of the Modified
      Version, as the publisher.

      __1__ Preserve all the copyright notices of the Document.

      __1__ Add an appropriate copyright notice for your modifications adjacent
      to the other copyright notices.

      __1__ 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.

      __1__ 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.

      __1__ 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.

      __1__ 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.

      __1__ 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.

      __1__ 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.

      __1__ Delete any section Entitled "Endorsements". Such a section may not
      be included in the Modified Version.

      __1__ Do not retitle any existing section to be Entitled "Endorsements" or
      to conflict in title with any Invariant Section.

      __1__ 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.

   __1__ 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".

   __1__ 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.

   __1__ 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
   in 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 aggregate.

   __1__ 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.

   __1__ TERMINATION

   You may not copy, modify, sublicense, or distribute the Document except as
   expressly provided under this License. Any attempt otherwise to copy, modify,
   sublicense, or distribute it is void, and will automatically terminate your
   rights under this License.

   However, if you cease all violation of this License, then your license from a
   particular copyright holder is reinstated (a) provisionally, unless and until
   the copyright holder explicitly and finally terminates your license, and (b)
   permanently, if the copyright holder fails to notify you of the violation by
   some reasonable means prior to 60 days after the cessation.

   Moreover, your license from a particular copyright holder is reinstated
   permanently if the copyright holder notifies you of the violation by some
   reasonable means, this is the first time you have received notice of
   violation of this License (for any work) from that copyright holder, and you
   cure the violation prior to 30 days after your receipt of the notice.

   Termination of your rights under this section does not terminate the licenses
   of parties who have received copies or rights from you under this License. If
   your rights have been terminated and not permanently reinstated, receipt of a
   copy of some or all of the same material does not give you any rights to use
   it.

   __1__ 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||licenses))
/.

   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.
   If the Document specifies that a proxy can decide which future versions of
   this License can be used, that proxy's public statement of acceptance of a
   version permanently authorizes you to choose that version for the Document.

   __1__ RELICENSING

   "Massive Multiauthor Collaboration Site" (or "MMC Site") means any World Wide
   Web server that publishes copyrightable works and also provides prominent
   facilities for anybody to edit those works. A public wiki that anybody can
   edit is an example of such a server. A "Massive Multiauthor Collaboration"
   (or "MMC") contained in the site means any set of copyrightable works thus
   published on the MMC site.

   "CC-BY-SA" means the Creative Commons Attribution-Share Alike 3.0 license
   published by Creative Commons Corporation, a not-for-profit corporation with
   a principal place of business in San Francisco, California, as well as future
   copyleft versions of that license published by that same organization.

   "Incorporate" means to publish or republish a Document, in whole or in part,
   as part of another Document.

   An MMC is "eligible for relicensing" if it is licensed under this License,
   and if all works that were first published under this License somewhere other
   than this MMC, and subsequently incorporated in whole or in part into the
   MMC, (1) had no cover texts or invariant sections, and (2) were thus
   incorporated prior to November 1, 2008.

   The operator of an MMC Site may republish an MMC contained in the site under
   CC-BY-SA on the same site at any time before August 1, 2009, provided the MMC
   is eligible for relicensing.
((  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) __10__. Permission is granted to copy, distribute and/or
modify this document under the terms of the GNU Free Documentation License,
Version 1.3 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 situation.

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.
))??
