[elpa] externals/ef-themes 2b9b75c1a1 272/281: Add the manual

[ELPA Syncer]

branch: externals/ef-themes
commit 2b9b75c1a13f45f11ff6e811716ed86556698106
Author: Protesilaos Stavrou <info@protesilaos.com>
Commit: Protesilaos Stavrou <info@protesilaos.com>

    Add the manual
---
 README.md       |  83 ++-----
 README.org      | 694 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 doclicense.texi | 505 +++++++++++++++++++++++++++++++++++++++++
 3 files changed, 1212 insertions(+), 70 deletions(-)

diff --git a/README.md b/README.md
index 51c21d5217..3f87af4b95 100644
--- a/README.md
+++ b/README.md
@@ -1,72 +1,15 @@
 # Ef (εὖ) themes for GNU Emacs
 
-WORK-IN-PROGRESS
-
-Colourful and legible themes.
-
-## Screenshots (PRE-RELEASE and WORK-IN-PROGRESS)
-
-**Those will be removed from the repo before the actual package is
-released.**
-
-The themes in order:
-
-- `ef-spring`
-- `ef-summer`
-- `ef-day`
-- `ef-night`
-- `ef-winter`
-- `ef-autumn`
-
-![Ef Spring PRE-RELEASE 
DEMO](./screenshots/pre-release-ef-themes-demo-spring.png)
-
-![Ef Summer PRE-RELEASE 
DEMO](./screenshots/pre-release-ef-themes-demo-summer.png)
-
-![Ef Day PRE-RELEASE DEMO](./screenshots/pre-release-ef-themes-demo-day.png)
-
-![Ef Night PRE-RELEASE 
DEMO](./screenshots/pre-release-ef-themes-demo-night.png)
-
-![Ef Winter PRE-RELEASE 
DEMO](./screenshots/pre-release-ef-themes-demo-winter.png)
-
-![Ef Autumn PRE-RELEASE 
DEMO](./screenshots/pre-release-ef-themes-demo-autumn.png)
-
-## Principles
-
-* No customisation options!  Either you like them or you don't.
-
-* Curated list of supported packages.  I will only cover what I use
-  and/or know is in a well-maintained state.
-
-* Minimum contrast ratio of 4.5:1 against the main background (WCAG AA
-  standard).  Use my `modus-themes` package (also built into Emacs 28 or
-  higher) if you need top-class accessibility.
-
-## Minimal VS maximal scope
-
-The `ef-themes` are meant to be minimal in scope, as opposed to my
-`modus-themes` whose accessibility requirements make them maximalist _by
-necessity_.  The `modus-themes` are such because:
-
-1. Accessibility is not a one-size-fits-all.  Customisation options are
-   necessary to empower users.
-2. Accessibility is as good as its weakest link.  If the user spends all
-   day using FOO package, it needs to be perfectly legible, otherwise
-   the whole theme fails to deliver on its promise.
-
-The `ef-themes` can afford to be minimal because they do not have such a
-lofty accessibility target.
-
-## FAQ
-
-### Will you stop using the modus-themes?
-
-No.  For my workflow, accessibility is the most important quality.  The
-`modus-themes` will remain my default choice.
-
-### Then why develop the ef-themes?
-
-Because I think that users deserve "pretty" themes that (i) do make some
-considerations for legibility, and (ii) are not designed on a whimsy.
-
-In other words, the `ef-themes` are my answer to those who like my
-`modus-themes` but want something with a bit more flair.
+WORK-IN-PROGRESS: screenshots will be available once things stabilise.
+
+The `ef-themes` are a collection of light and dark themes for GNU Emacs
+whose goal is to provide colorful ("pretty") yet legible options for
+users who want something with a bit more flair than the `modus-themes`
+(also designed by me).
+
++ Package name (GNU ELPA): `ef-themes`
++ Git repo on SourceHut: <https://git.sr.ht/~protesilaos/ef-themes>
+  - Mirrors:
+    + GitHub: <https://github.com/protesilaos/ef-themes>
+    + GitLab: <https://gitlab.com/protesilaos/ef-themes>
++ Mailing list: <https://lists.sr.ht/~protesilaos/ef-themes>
diff --git a/README.org b/README.org
new file mode 100644
index 0000000000..08de3adc63
--- /dev/null
+++ b/README.org
@@ -0,0 +1,694 @@
+#+title:                 ef-themes: colorful and legible themes
+#+author:                Protesilaos Stavrou
+#+email:                 info@protesilaos.com
+#+language:              en
+#+options:               ':t toc:nil author:t email:t num:t
+#+startup:               content
+#+macro:                 stable-version N/A
+#+macro:                 release-date N/A
+#+macro:                 development-version 0.1.0-dev
+#+export_file_name:      ef-themes.texi
+#+texinfo_filename:      ef-themes.info
+#+texinfo_dir_category:  Emacs misc features
+#+texinfo_dir_title:     Ef-Themes: (ef-themes)
+#+texinfo_dir_desc:      Colorful and legible themes
+#+texinfo_header:        @set MAINTAINERSITE 
@uref{https://protesilaos.com,maintainer webpage}
+#+texinfo_header:        @set MAINTAINER Protesilaos Stavrou
+#+texinfo_header:        @set MAINTAINEREMAIL @email{info@protesilaos.com}
+#+texinfo_header:        @set MAINTAINERCONTACT 
@uref{mailto:info@protesilaos.com,contact the maintainer}
+
+#+texinfo: @insertcopying
+
+This manual, written by Protesilaos Stavrou, describes the Emacs package
+called =ef-themes=, and provides every other piece of information
+pertinent to it.
+
+The documentation furnished herein corresponds to stable version
+{{{stable-version}}}, released on {{{release-date}}}.  Any reference to
+a newer feature which does not yet form part of the latest tagged
+commit, is explicitly marked as such.
+
+Current development target is {{{development-version}}}.
+
++ Package name (GNU ELPA): =ef-themes=
++ Official manual: <https://protesilaos.com/emacs/ef-themes>
++ Git repo on SourceHut: <https://git.sr.ht/~protesilaos/ef-themes>
+  - Mirrors:
+    + GitHub: <https://github.com/protesilaos/ef-themes>
+    + GitLab: <https://gitlab.com/protesilaos/ef-themes>
++ Mailing list: <https://lists.sr.ht/~protesilaos/ef-themes>
+
+If you are viewing the README.org version of this file, please note that
+the GNU ELPA machinery automatically generates an Info manual out of it.
+
+#+toc: headlines 8 insert TOC here, with eight headline levels
+
+* COPYING
+:PROPERTIES:
+:COPYING: t
+:CUSTOM_ID: h:1d213fed-b9a9-401c-9b5d-c7df602c2f63
+:END:
+
+Copyright (C) 2022  Free Software Foundation, Inc.
+
+#+begin_quote
+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, with the Front-Cover Texts being “A GNU Manual,” and
+with the Back-Cover Texts as in (a) below.  A copy of the license is
+included in the section entitled “GNU Free Documentation License.”
+
+(a) The FSF’s Back-Cover Text is: “You have the freedom to copy and
+modify this GNU manual.”
+#+end_quote
+
+* Installation
+:PROPERTIES:
+:CUSTOM_ID: h:dd9e06f2-eef0-4afe-8a12-b7af5d597108
+:END:
+#+cindex: Installation instructions
+
+** GNU ELPA package
+:PROPERTIES:
+:CUSTOM_ID: h:400d57a6-3a66-4ebf-b2e1-58a42237e0c2
+:END:
+
+The package is available as =ef-themes=.  Simply do:
+
+: M-x package-refresh-contents
+: M-x package-install
+
+And search for it.
+
+GNU ELPA provides the latest stable release.  Those who prefer to follow
+the development process in order to report bugs or suggest changes, can
+use the version of the package from the GNU-devel ELPA archive.  Read:
+https://protesilaos.com/codelog/2022-05-13-emacs-elpa-devel/.
+
+** Manual installation
+:PROPERTIES:
+:CUSTOM_ID: h:97fcd2cf-a80b-4a52-a8c7-40b65e563c70
+:END:
+
+Assuming your Emacs files are found in =~/.emacs.d/=, execute the
+following commands in a shell prompt:
+
+#+begin_src sh
+cd ~/.emacs.d
+
+# Create a directory for manually-installed packages
+mkdir manual-packages
+
+# Go to the new directory
+cd manual-packages
+
+# Clone this repo, naming it "ef-themes"
+git clone https://git.sr.ht/~protesilaos/ef-themes ef-themes
+#+end_src
+
+Finally, in your =init.el= (or equivalent) evaluate this:
+
+#+begin_src emacs-lisp
+;; Make Elisp files in that directory available to the user.
+(add-to-list 'load-path "~/.emacs.d/manual-packages/ef-themes")
+#+end_src
+
+Everything is in place to set up the package.
+
+* Sample configuration
+:PROPERTIES:
+:CUSTOM_ID: h:ac76ded0-af9b-4566-aff9-75142ef2d4ef
+:END:
+
+#+begin_src emacs-lisp
+(require 'ef-themes)
+
+;; Disable all other themes to avoid awkward blending
+(mapc #'disable-theme custom-enabled-themes)
+
+;; Load the theme of choice:
+(load-theme 'ef-summer :no-confirm)
+
+;; We also provide these commands, but do not assign them to any key:
+;;
+;; - `ef-themes-select'
+;; - `ef-themes-preview-colors'
+;; - `ef-themes-preview-colors-current'
+#+end_src
+
+* Principles
+:PROPERTIES:
+:CUSTOM_ID: h:a6dd030c-6b6c-4992-83e8-3438b4607b51
+:END:
+
++ No customisation options!  Either you like them or you don't.
+
++ Curated list of supported packages.  I will only cover what I use
+  and/or know is in a well-maintained state.
+
++ Minimum contrast ratio of 4.5:1 against the main background (WCAG AA
+  standard).  Use my =modus-themes= package (also built into Emacs 28 or
+  higher) if you need top-class accessibility.
+
+* Minimal VS maximal scope
+:PROPERTIES:
+:CUSTOM_ID: h:fb219b87-ab95-401a-a742-a2fc451bf9f7
+:END:
+
+The =ef-themes= are meant to be minimal in scope, as opposed to my
+=modus-themes= whose accessibility requirements make them maximalist by
+necessity.  The =modus-themes= are such because:
+
+1. Accessibility is not a one-size-fits-all.  Customisation options are
+   necessary to empower users.
+2. Accessibility is as good as its weakest link.  If the user spends all
+   day using FOO package, it needs to be perfectly legible, otherwise
+   the whole theme fails to deliver on its promise.
+
+The =ef-themes= can afford to be minimal because they do not have such a
+lofty accessibility target.
+
+* FAQ
+:PROPERTIES:
+:CUSTOM_ID: h:a6d5c6f1-84c5-4d74-ba39-b5ccda05497a
+:END:
+
+** Will you stop using the modus-themes?
+:PROPERTIES:
+:CUSTOM_ID: h:33c9b520-0af2-441c-a2e8-2945522feb3e
+:END:
+
+No.  For my workflow, accessibility is the most important quality.  The
+=modus-themes= will remain my default choice.
+
+** Then why develop the ef-themes?
+:PROPERTIES:
+:CUSTOM_ID: h:ca441ae7-2e18-4dd2-9f5d-e3b806456251
+:END:
+
+Because I think that users deserve "pretty" themes that (i) do make some
+considerations for legibility, and (ii) are not designed on a whimsy.
+
+In other words, the =ef-themes= are my answer to those who like my
+=modus-themes= but want something with a bit more flair.
+
+* Acknowledgements
+:PROPERTIES:
+:CUSTOM_ID: h:5d8753d2-cc10-44a7-9467-dcd62157718b
+:END:
+#+cindex: Contributors
+
+This project is meant to be a collective effort.  Every bit of help
+matters.
+
++ Author/maintainer :: Protesilaos Stavrou.
+
++ Ideas and/or user feedback :: Spike-Leung, Summer Emacs.
+
+* GNU Free Documentation License
+:PROPERTIES:
+:CUSTOM_ID: h:a349a898-0068-4529-ab3b-167c1b7b8534
+:END:
+
+#+texinfo: @include doclicense.texi
+
+#+begin_export html
+<pre>
+
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+
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+"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 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.
+
+
+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 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.
+
+
+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
+https://www.gnu.org/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.
+
+11. 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)  YEAR  YOUR NAME.
+    Permission is granted to copy, distribute and/or modify this document
+    under the terms of the GNU Free Documentation License, Version 1.3
+    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.
+</pre>
+#+end_export
+
+#+html: <!--
+
+* Indices
+:PROPERTIES:
+:CUSTOM_ID: h:3dbfeab5-bf86-4dfe-bf90-74061205b570
+:END:
+
+** Function index
+:PROPERTIES:
+:CUSTOM_ID: h:c3fa52c2-988f-40f2-84a8-07699a61867c
+:END:
+
+** Variable index
+:PROPERTIES:
+:CUSTOM_ID: h:02b12c7b-22e5-457b-8086-5bf7866db0de
+:END:
+
+** Concept index
+:PROPERTIES:
+:CUSTOM_ID: h:c68456c8-ec2b-4d16-93d2-f9fcb18b2fdd
+:END:
+
+#+html: -->
diff --git a/doclicense.texi b/doclicense.texi
new file mode 100644
index 0000000000..eaf3da0e92
--- /dev/null
+++ b/doclicense.texi
@@ -0,0 +1,505 @@
+@c The GNU Free Documentation License.
+@center Version 1.3, 3 November 2008
+
+@c This file is intended to be included within another document,
+@c hence no sectioning command or @node.
+
+@display
+Copyright @copyright{} 2000, 2001, 2002, 2007, 2008 Free Software Foundation, 
Inc.
+@uref{https://fsf.org/}
+
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+@end display
+
+@enumerate 0
+@item
+PREAMBLE
+
+The purpose of this License is to make a manual, textbook, or other
+functional and useful document @dfn{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.
+
+@item
+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, La@TeX{} 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.
+
+@item
+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.
+
+@item
+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.
+
+@item
+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:
+
+@enumerate A
+@item
+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.
+
+@item
+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.
+
+@item
+State on the Title page the name of the publisher of the
+Modified Version, as the publisher.
+
+@item
+Preserve all the copyright notices of the Document.
+
+@item
+Add an appropriate copyright notice for your modifications
+adjacent to the other copyright notices.
+
+@item
+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.
+
+@item
+Preserve in that license notice the full lists of Invariant Sections
+and required Cover Texts given in the Document's license notice.
+
+@item
+Include an unaltered copy of this License.
+
+@item
+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.
+
+@item
+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.
+
+@item
+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.
+
+@item
+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.
+
+@item
+Delete any section Entitled ``Endorsements''.  Such a section
+may not be included in the Modified Version.
+
+@item
+Do not retitle any existing section to be Entitled ``Endorsements'' or
+to conflict in title with any Invariant Section.
+
+@item
+Preserve any Warranty Disclaimers.
+@end enumerate
+
+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.
+
+@item
+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.''
+
+@item
+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.
+
+@item
+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.
+
+@item
+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.
+
+@item
+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.
+
+@item
+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
+@uref{https://www.gnu.org/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.
+
+@item
+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.
+
+@end enumerate
+
+@page
+@heading 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:
+
+@smallexample
+@group
+  Copyright (C)  @var{year}  @var{your name}.
+  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''.
+@end group
+@end smallexample
+
+If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
+replace the ``with@dots{}Texts.''@: line with this:
+
+@smallexample
+@group
+    with the Invariant Sections being @var{list their titles}, with
+    the Front-Cover Texts being @var{list}, and with the Back-Cover Texts
+    being @var{list}.
+@end group
+@end smallexample
+
+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.
+
+@c Local Variables:
+@c ispell-local-pdict: "ispell-dict"
+@c End: