472 lines
20 KiB
ReStructuredText
472 lines
20 KiB
ReStructuredText
|
.. -*- coding: utf-8; mode: rst -*-
|
||
|
|
||
|
.. _fdl:
|
||
|
|
||
|
******************************
|
||
|
GNU Free Documentation License
|
||
|
******************************
|
||
|
|
||
|
|
||
|
.. _fdl-preamble:
|
||
|
|
||
|
0. PREAMBLE
|
||
|
===========
|
||
|
|
||
|
The purpose of this License is to make a manual, textbook, or other
|
||
|
written document “free” in the sense of freedom: to assure everyone the
|
||
|
effective freedom to copy and redistribute it, with or without modifying
|
||
|
it, either commercially or 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.
|
||
|
|
||
|
|
||
|
.. _fdl-section1:
|
||
|
|
||
|
1. APPLICABILITY AND DEFINITIONS
|
||
|
================================
|
||
|
|
||
|
|
||
|
.. _fdl-document:
|
||
|
|
||
|
This License applies to any manual or other work that contains a notice
|
||
|
placed by the copyright holder saying it can be distributed under the
|
||
|
terms of this License. The “Document”, below, refers to any such manual
|
||
|
or work. Any member of the public is a licensee, and is addressed as
|
||
|
“you”.
|
||
|
|
||
|
|
||
|
.. _fdl-modified:
|
||
|
|
||
|
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.
|
||
|
|
||
|
|
||
|
.. _fdl-secondary:
|
||
|
|
||
|
A “Secondary Section” is a named appendix or a front-matter section of
|
||
|
the :ref:`Document <fdl-document>` that deals exclusively with the
|
||
|
relationship of the publishers or authors of the Document to the
|
||
|
Document's overall subject (or to related matters) and contains nothing
|
||
|
that could fall directly within that overall subject. (For example, if
|
||
|
the Document is in part a textbook of mathematics, a Secondary Section
|
||
|
may not explain any mathematics.) The relationship could be a matter of
|
||
|
historical connection with the subject or with related matters, or of
|
||
|
legal, commercial, philosophical, ethical or political position
|
||
|
regarding them.
|
||
|
|
||
|
|
||
|
.. _fdl-invariant:
|
||
|
|
||
|
The “Invariant Sections” are certain
|
||
|
:ref:`Secondary Sections <fdl-secondary>` whose titles are designated,
|
||
|
as being those of Invariant Sections, in the notice that says that the
|
||
|
:ref:`Document <fdl-document>` is released under this License.
|
||
|
|
||
|
|
||
|
.. _fdl-cover-texts:
|
||
|
|
||
|
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
|
||
|
:ref:`Document <fdl-document>` is released under this License.
|
||
|
|
||
|
|
||
|
.. _fdl-transparent:
|
||
|
|
||
|
A “Transparent” copy of the :ref:`Document <fdl-document>` means a
|
||
|
machine-readable copy, represented in a format whose specification is
|
||
|
available to the general public, whose contents can be viewed and edited
|
||
|
directly and straightforwardly with generic text editors or (for images
|
||
|
composed of pixels) generic paint programs or (for drawings) some widely
|
||
|
available drawing editor, and that is suitable for input to text
|
||
|
formatters or for automatic translation to a variety of formats suitable
|
||
|
for input to text formatters. A copy made in an otherwise Transparent
|
||
|
file format whose markup has been designed to thwart or discourage
|
||
|
subsequent modification by readers is not Transparent. A copy that is
|
||
|
not “Transparent” is called “Opaque”.
|
||
|
|
||
|
Examples of suitable formats for Transparent copies include plain ASCII
|
||
|
without markup, Texinfo input format, LaTeX input format, SGML or XML
|
||
|
using a publicly available DTD, and standard-conforming simple HTML
|
||
|
designed for human modification. Opaque formats include PostScript, PDF,
|
||
|
proprietary formats that can be read and edited only by proprietary word
|
||
|
processors, SGML or XML for which the DTD and/or processing tools are
|
||
|
not generally available, and the machine-generated HTML produced by some
|
||
|
word processors for output purposes only.
|
||
|
|
||
|
|
||
|
.. _fdl-title-page:
|
||
|
|
||
|
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.
|
||
|
|
||
|
|
||
|
.. _fdl-section2:
|
||
|
|
||
|
2. VERBATIM COPYING
|
||
|
===================
|
||
|
|
||
|
You may copy and distribute the :ref:`Document <fdl-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
|
||
|
:ref:`section 3 <fdl-section3>`.
|
||
|
|
||
|
You may also lend copies, under the same conditions stated above, and
|
||
|
you may publicly display copies.
|
||
|
|
||
|
|
||
|
.. _fdl-section3:
|
||
|
|
||
|
3. COPYING IN QUANTITY
|
||
|
======================
|
||
|
|
||
|
If you publish printed copies of the :ref:`Document <fdl-document>`
|
||
|
numbering more than 100, and the Document's license notice requires
|
||
|
:ref:`Cover Texts <fdl-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
|
||
|
:ref:`Document <fdl-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 :ref:`Opaque <fdl-transparent>` copies of
|
||
|
the :ref:`Document <fdl-document>` numbering more than 100, you must
|
||
|
either include a machine-readable :ref:`Transparent <fdl-transparent>`
|
||
|
copy along with each Opaque copy, or state in or with each Opaque copy a
|
||
|
publicly-accessible computer-network location containing a complete
|
||
|
Transparent copy of the Document, free of added material, which the
|
||
|
general network-using public has access to download anonymously at no
|
||
|
charge using public-standard network protocols. If you use the latter
|
||
|
option, you must take reasonably prudent steps, when you begin
|
||
|
distribution of Opaque copies in quantity, to ensure that this
|
||
|
Transparent copy will remain thus accessible at the stated location
|
||
|
until at least one year after the last time you distribute an Opaque
|
||
|
copy (directly or through your agents or retailers) of that edition to
|
||
|
the public.
|
||
|
|
||
|
It is requested, but not required, that you contact the authors of the
|
||
|
:ref:`Document <fdl-document>` well before redistributing any large
|
||
|
number of copies, to give them a chance to provide you with an updated
|
||
|
version of the Document.
|
||
|
|
||
|
|
||
|
.. _fdl-section4:
|
||
|
|
||
|
4. MODIFICATIONS
|
||
|
================
|
||
|
|
||
|
You may copy and distribute a :ref:`Modified Version <fdl-modified>`
|
||
|
of the :ref:`Document <fdl-document>` under the conditions of sections
|
||
|
:ref:`2 <fdl-section2>` and :ref:`3 <fdl-section3>` 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 :ref:`Title Page <fdl-title-page>` (and on the covers,
|
||
|
if any) a title distinct from that of the
|
||
|
:ref:`Document <fdl-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 :ref:`Title Page <fdl-title-page>`, as authors, one or
|
||
|
more persons or entities responsible for authorship of the
|
||
|
modifications in the :ref:`Modified Version <fdl-modified>`,
|
||
|
together with at least five of the principal authors of the
|
||
|
:ref:`Document <fdl-document>` (all of its principal authors, if it
|
||
|
has less than five).
|
||
|
|
||
|
- **C.**
|
||
|
State on the :ref:`Title Page <fdl-title-page>` the name of the
|
||
|
publisher of the :ref:`Modified Version <fdl-modified>`, as the
|
||
|
publisher.
|
||
|
|
||
|
- **D.**
|
||
|
Preserve all the copyright notices of the
|
||
|
:ref:`Document <fdl-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
|
||
|
:ref:`Modified Version <fdl-modified>` under the terms of this
|
||
|
License, in the form shown in the Addendum below.
|
||
|
|
||
|
- **G.**
|
||
|
Preserve in that license notice the full lists of
|
||
|
:ref:`Invariant Sections <fdl-invariant>` and required
|
||
|
:ref:`Cover Texts <fdl-cover-texts>` given in the
|
||
|
:ref:`Document's <fdl-document>` license notice.
|
||
|
|
||
|
- **H.**
|
||
|
Include an unaltered copy of this License.
|
||
|
|
||
|
- **I.**
|
||
|
Preserve the section entitled “History”, and its title, and add to it
|
||
|
an item stating at least the title, year, new authors, and publisher
|
||
|
of the :ref:`Modified Version <fdl-modified>` as given on the
|
||
|
:ref:`Title Page <fdl-title-page>`. If there is no section entitled
|
||
|
“History” in the :ref:`Document <fdl-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
|
||
|
:ref:`Document <fdl-document>` for public access to a
|
||
|
:ref:`Transparent <fdl-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.**
|
||
|
In any section entitled “Acknowledgements” or “Dedications”, preserve
|
||
|
the section's title, and preserve in the section all the substance
|
||
|
and tone of each of the contributor acknowledgements and/or
|
||
|
dedications given therein.
|
||
|
|
||
|
- **L.**
|
||
|
Preserve all the :ref:`Invariant Sections <fdl-invariant>` of the
|
||
|
:ref:`Document <fdl-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 :ref:`Modified Version <fdl-modified>`.
|
||
|
|
||
|
- **N.**
|
||
|
Do not retitle any existing section as “Endorsements” or to conflict
|
||
|
in title with any :ref:`Invariant Section <fdl-invariant>`.
|
||
|
|
||
|
If the :ref:`Modified Version <fdl-modified>` includes new
|
||
|
front-matter sections or appendices that qualify as
|
||
|
:ref:`Secondary Sections <fdl-secondary>` 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 :ref:`Invariant Sections <fdl-invariant>` 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
|
||
|
:ref:`Modified Version <fdl-modified>` 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
|
||
|
:ref:`Front-Cover Text <fdl-cover-texts>`, and a passage of up to 25
|
||
|
words as a :ref:`Back-Cover Text <fdl-cover-texts>`, to the end of the
|
||
|
list of :ref:`Cover Texts <fdl-cover-texts>` in the
|
||
|
:ref:`Modified Version <fdl-modified>`. 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
|
||
|
:ref:`Document <fdl-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 :ref:`Document <fdl-document>`
|
||
|
do not by this License give permission to use their names for publicity
|
||
|
for or to assert or imply endorsement of any
|
||
|
:ref:`Modified Version <fdl-modified>`.
|
||
|
|
||
|
|
||
|
.. _fdl-section5:
|
||
|
|
||
|
5. COMBINING DOCUMENTS
|
||
|
======================
|
||
|
|
||
|
You may combine the :ref:`Document <fdl-document>` with other
|
||
|
documents released under this License, under the terms defined in
|
||
|
:ref:`section 4 <fdl-section4>` above for modified versions, provided
|
||
|
that you include in the combination all of the
|
||
|
:ref:`Invariant Sections <fdl-invariant>` of all of the original
|
||
|
documents, unmodified, and list them all as Invariant Sections of your
|
||
|
combined work in its license notice.
|
||
|
|
||
|
The combined work need only contain one copy of this License, and
|
||
|
multiple identical :ref:`Invariant Sections <fdl-invariant>` 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.”
|
||
|
|
||
|
|
||
|
.. _fdl-section6:
|
||
|
|
||
|
6. COLLECTIONS OF DOCUMENTS
|
||
|
===========================
|
||
|
|
||
|
You may make a collection consisting of the
|
||
|
:ref:`Document <fdl-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 dispbibute
|
||
|
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.
|
||
|
|
||
|
|
||
|
.. _fdl-section7:
|
||
|
|
||
|
7. AGGREGATION WITH INDEPENDENT WORKS
|
||
|
=====================================
|
||
|
|
||
|
A compilation of the :ref:`Document <fdl-document>` or its derivatives
|
||
|
with other separate and independent documents or works, in or on a
|
||
|
volume of a storage or distribution medium, does not as a whole count as
|
||
|
a :ref:`Modified Version <fdl-modified>` of the Document, provided no
|
||
|
compilation copyright is claimed for the compilation. Such a compilation
|
||
|
is called an “aggregate”, and this License does not apply to the other
|
||
|
self-contained works thus compiled with the Document , on account of
|
||
|
their being thus compiled, if they are not themselves derivative works
|
||
|
of the Document. If the :ref:`Cover Text <fdl-cover-texts>`
|
||
|
requirement of :ref:`section 3 <fdl-section3>` is applicable to these
|
||
|
copies of the Document, then if the Document is less than one quarter of
|
||
|
the entire aggregate, the Document's Cover Texts may be placed on covers
|
||
|
that surround only the Document within the aggregate. Otherwise they
|
||
|
must appear on covers around the whole aggregate.
|
||
|
|
||
|
|
||
|
.. _fdl-section8:
|
||
|
|
||
|
8. TRANSLATION
|
||
|
==============
|
||
|
|
||
|
Translation is considered a kind of modification, so you may distribute
|
||
|
translations of the :ref:`Document <fdl-document>` under the terms of
|
||
|
:ref:`section 4 <fdl-section4>`. Replacing
|
||
|
:ref:`Invariant Sections <fdl-invariant>` with translations requires
|
||
|
special permission from their copyright holders, but you may include
|
||
|
translations of some or all Invariant Sections in addition to the
|
||
|
original versions of these Invariant Sections. You may include a
|
||
|
translation of this License provided that you also include the original
|
||
|
English version of this License. In case of a disagreement between the
|
||
|
translation and the original English version of this License, the
|
||
|
original English version will prevail.
|
||
|
|
||
|
|
||
|
.. _fdl-section9:
|
||
|
|
||
|
9. TERMINATION
|
||
|
==============
|
||
|
|
||
|
You may not copy, modify, sublicense, or distribute the
|
||
|
:ref:`Document <fdl-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.
|
||
|
|
||
|
|
||
|
.. _fdl-section10:
|
||
|
|
||
|
10. FUTURE REVISIONS OF THIS LICENSE
|
||
|
====================================
|
||
|
|
||
|
The `Free Software Foundation <http://www.gnu.org/fsf/fsf.html>`__
|
||
|
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/ <http://www.gnu.org/copyleft>`__.
|
||
|
|
||
|
Each version of the License is given a distinguishing version number. If
|
||
|
the :ref:`Document <fdl-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.
|
||
|
|
||
|
|
||
|
.. _fdl-using:
|
||
|
|
||
|
Addendum
|
||
|
========
|
||
|
|
||
|
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 © YEAR YOUR NAME.
|
||
|
|
||
|
Permission is granted to copy, distribute and/or modify this
|
||
|
document under the terms of the GNU Free Documentation License,
|
||
|
Version 1.1 or any later version published by the Free Software
|
||
|
Foundation; with the :ref:`Invariant Sections <fdl-invariant>`
|
||
|
being LIST THEIR TITLES, with the
|
||
|
:ref:`Front-Cover Texts <fdl-cover-texts>` being LIST, and with
|
||
|
the :ref:`Back-Cover Texts <fdl-cover-texts>` being LIST. A copy
|
||
|
of the license is included in the section entitled “GNU Free
|
||
|
Documentation License”.
|
||
|
|
||
|
If you have no :ref:`Invariant Sections <fdl-invariant>`, write “with
|
||
|
no Invariant Sections” instead of saying which ones are invariant. If
|
||
|
you have no :ref:`Front-Cover Texts <fdl-cover-texts>`, write “no
|
||
|
Front-Cover Texts” instead of “Front-Cover Texts being LIST”; likewise
|
||
|
for :ref:`Back-Cover Texts <fdl-cover-texts>`.
|
||
|
|
||
|
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 <http://www.gnu.org/copyleft/gpl.html>`__,
|
||
|
to permit their use in free software.
|