========================
 Docutils Configuration
========================

:Author: David Goodger
:Contact: docutils-develop@lists.sourceforge.net
:Revision: $Revision: 7970 $
:Date: $Date: 2016-08-19 12:21:24 +0200 (Fr, 19. Aug 2016) $
:Copyright: This document has been placed in the public domain.

.. sidebar:: Docutils Security for Web Applications

   For details about securing web applications, please see `Deploying
   Docutils Securely <../howto/security.html>`_.

.. contents::


-------------------
Configuration Files
-------------------

Configuration files are used for persistent customization; they can be
set once and take effect every time you use a front-end tool.
Configuration file settings override the built-in defaults, and
command-line options override all.

By default, Docutils checks the following places for configuration
files, in the following order:

1. ``/etc/docutils.conf``: This is a system-wide configuration file,
   applicable to all Docutils processing on the system.

2. ``./docutils.conf``: This is a project-specific configuration file,
   located in the current directory.  The Docutils front end has to be
   executed from the directory containing this configuration file for
   it to take effect (note that this may have nothing to do with the
   location of the source files).  Settings in the project-specific
   configuration file will override corresponding settings in the
   system-wide file.

3. ``~/.docutils``: This is a user-specific configuration file,
   located in the user's home directory.  Settings in this file will
   override corresponding settings in both the system-wide and
   project-specific configuration files.

If more than one configuration file is found, all will be read but
later entries will override earlier ones.  For example, a "stylesheet"
entry in a user-specific configuration file will override a
"stylesheet" entry in the system-wide file.

The default implicit config file paths can be overridden by the
``DOCUTILSCONFIG`` environment variable.  ``DOCUTILSCONFIG`` should
contain a colon-separated (semicolon-separated on Windows) sequence of
config file paths to search for; leave it empty to disable implicit
config files altogether.  Tilde-expansion is performed on paths.
Paths are interpreted relative to the current working directory.
Empty path items are ignored.

In addition, a configuration file may be explicitly specified with the
"--config" command-line option.  This configuration file is read after
the three implicit ones listed above (or the ones defined by the
``DOCUTILSCONFIG`` environment variable), and its entries will have
priority.


-------------------------
Configuration File Syntax
-------------------------

Configuration files are UTF-8-encoded text files.  The
ConfigParser.py_ module from Python_'s standard library is used to
read them.  From its documentation:

    The configuration file consists of sections, lead by a "[section]"
    header and followed by "name: value" entries, with continuations
    in the style of `RFC 822`_; "name=value" is also accepted.  Note
    that leading whitespace is removed from values.  ...  Lines
    beginning with "#" or ";" are ignored and may be used to provide
    comments.

.. Note:: No format string interpolation is done.

Configuration file entry names correspond to internal runtime
settings.  Underscores ("_") and hyphens ("-") can be used
interchangably in entry names; hyphens are automatically converted to
underscores.

For on/off switch settings (_`booleans`), the following values are
recognized:

:On: "true", "yes", "on", "1"
:Off: "false", "no", "off", "0", "" (no value)

.. _list:

List values can be comma- or colon-delimited.

strip_classes_, strip_elements_with_classes_, stylesheet, and
stylesheet_path use the comma as delimiter,
whitespace around list values is stripped. ::

    strip-classes: ham,eggs,
    strip-elements-with-classes: sugar, salt, flour
    stylesheet: html4css1.css,
                math.css,
                style with spaces.css
    stylesheet-path: ../styles/my.css, ../styles/funny.css

expose_internals_, ignore_ and prune_ use the colon as delimiter and do not
strip whitespace::

    expose_internals: b:c:d


Example
=======

This is the contents of the ``tools/docutils.conf`` configuration file
supplied with Docutils::

    # These entries affect all processing:
    [general]
    source-link: yes
    datestamp: %Y-%m-%d %H:%M UTC
    generator: on

    # These entries affect HTML output:
    [html4css1 writer]
    # Required for docutils-update, the website build system:
    stylesheet-path: ../docutils/writers/html4css1/html4css1.css
    embed-stylesheet: no
    field-name-limit: 20

Individual configuration sections and settings are described in the
following section.


-------------------------------------
Configuration File Sections & Entries
-------------------------------------

Below are the Docutils runtime settings, listed by config file
section.  Any setting may be specified in any section, but only
settings from active sections will be used.  Sections correspond to
Docutils components (module name or alias; section names are always in
lowercase letters).  Each `Docutils application`_ uses a specific set
of components; corresponding configuration file sections are applied
when the application is used.  Configuration sections are applied in
general-to-specific order, as follows:

1. `[general]`_

2. `[parsers]`_, parser dependencies, and the section specific to the
   Parser used ("[... parser]").  Currently, only `[restructuredtext
   parser]`_ is applicable.

3. `[readers]`_, reader dependencies, and the section specific to the
   Reader used ("[... reader]").  For example, `[pep reader]`_ depends
   on `[standalone reader]`_.

4. `[writers]`_, writer dependencies, and the section specific to the
   Writer used ("[... writer]").  For example, `[pep_html writer]`_
   depends on `[html4css1 writer]`_.

5. `[applications]`_, application dependencies, and the section
    specific to the Application (front-end tool) in use
    ("[... application]").

Since any setting may be specified in any section, this ordering
allows component- or application-specific overrides of earlier
settings.  For example, there may be Reader-specific overrides of
general settings; Writer-specific overrides of Parser settings;
Application-specific overrides of Writer settings; and so on.

If multiple configuration files are applicable, the process is
completed (all sections are applied in the order given) for each one
before going on to the next.  For example, a "[pep_html writer]
stylesheet" setting in an earlier configuration file would be
overridden by an "[html4css1 writer] stylesheet" setting in a later
file.

Some knowledge of Python_ is assumed for some attributes.

.. _ConfigParser.py:
   http://www.python.org/doc/current/lib/module-ConfigParser.html
.. _Python: http://www.python.org/
.. _RFC 822: http://www.rfc-editor.org/rfc/rfc822.txt
.. _Docutils application: tools.html


[general]
=========

Settings in the "[general]" section are always applied.

auto_id_prefix
--------------

Prefix prepended to all auto-generated IDs generated within the
document, after id_prefix_.

Default: "id".
Options: ``--auto-id-prefix`` (hidden, intended mainly for programmatic use).

datestamp
---------

Include a time/datestamp in the document footer.  Contains a
format string for Python's ``time.strftime``.  See the `time
module documentation`__.

Default: None.
Options: ``--date, -d, --time, -t, --no-datestamp``.

Configuration file entry examples::

    # Equivalent to --date command-line option, results in
    # ISO 8601 extended format datestamp, e.g. "2001-12-21":
    datestamp: %Y-%m-%d

    # Equivalent to --time command-line option, results in
    # date/timestamp like "2001-12-21 18:43 UTC":
    datestamp: %Y-%m-%d %H:%M UTC

    # Disables datestamp; equivalent to --no-datestamp:
    datestamp:

__ http://www.python.org/doc/current/lib/module-time.html

debug
-----

Report debug-level system messages.

Default: don't (None).  Options: ``--debug, --no-debug``.

dump_internals
--------------

At the end of processing, write all internal attributes of the
document (``document.__dict__``) to stderr.

Default: don't (None).
Options: ``--dump-internals`` (hidden, for development use only).

dump_pseudo_xml
---------------

At the end of processing, write the pseudo-XML representation of
the document to stderr.

Default: don't (None).
Options: ``--dump-pseudo-xml`` (hidden, for development use only).

dump_settings
-------------

At the end of processing, write all Docutils settings to stderr.

Default: don't (None).
Options: ``--dump-settings`` (hidden, for development use only).

dump_transforms
---------------

At the end of processing, write a list of all transforms applied
to the document to stderr.

Default: don't (None).
Options: ``--dump-transforms`` (hidden, for development use only).

error_encoding
--------------

The text encoding for error output.

Default: "ascii".  Options: ``--error-encoding, -e``.

error_encoding_error_handler
----------------------------

The error handler for unencodable characters in error output.  See
output_encoding_error_handler_ for acceptable values.

Default: "backslashreplace"
Options: ``--error-encoding-error-handler, --error-encoding, -e``.

exit_status_level
-----------------

A system message level threshold; non-halting system messages at
or above this level will produce a non-zero exit status at normal
exit.  Exit status is the maximum system message level plus 10 (11
for INFO, etc.).

Default: disabled (5).  Options: ``--exit-status``.

expose_internals
----------------

List_ of internal attribues to expose as external attributes (with
"internal:" namespace prefix).  To specify multiple attributes in
configuration files, use colons to separate names; on the command
line, the option may be used more than once.

Default: don't (None).
Options: ``--expose-internal-attribute`` (hidden, for development use only).

footnote_backlinks
------------------

Enable or disable backlinks from footnotes_ and citations_ to their
references.

Default: enabled (True).
Options: ``--footnote-backlinks, --no-footnote-backlinks``.

generator
---------

Include a "Generated by Docutils" credit and link in the document footer.

Default: off (None).  Options: ``--generator, -g, --no-generator``.

halt_level
----------

The threshold at or above which system messages are converted to
exceptions, halting execution immediately.  If `traceback`_ is set, the
exception will propagate; otherwise, Docutils will exit.

Default: severe (4).  Options: ``--halt, --strict``.

id_prefix
---------

Prefix prepended to all IDs generated within the document.  See also
auto_id_prefix_.

Default: "" (empty).
Options: ``--id-prefix`` (hidden, intended mainly for programmatic use).

input_encoding
--------------

The text encoding for input.

Default: auto-detect (None).  Options: ``--input-encoding, -i``.

input_encoding_error_handler
----------------------------

The error handler for undecodable characters in the input. Acceptable
values include:

strict
    Raise an exception in case of an encoding error.
replace
    Replace malformed data with the official Unicode replacement
    character, U+FFFD.
ignore
    Ignore malformed data and continue without further notice.

Acceptable values are the same as for the "error" parameter of
Python's ``unicode`` function; other values may be defined in
applications or in future versions of Python.

Default: "strict".
Options: ``--input-encoding-error-handler, --input-encoding, -i``.

language_code
-------------

Case-insensitive `language tag`_ as defined in `BCP 47`_.

Sets the document language, also used for localized directive and
role names as well as Docutils-generated text.

A typical language identifier consists of a 2-letter language code
from `ISO 639`_ (3-letter codes can be used if no 2-letter code
exists). The language identifier can have an optional subtag,
typically for variations based on country (from `ISO 3166`_
2-letter country codes).  Avoid subtags except where they add
useful distinguishing information. Examples of language tags
include "fr", "en-GB", "pt-br" (the same as "pt-BR"), and
"de-1901" (German with pre-1996 spelling).

The language of document parts can be specified with a
"language-<language tag>" `class attribute`_, e.g.
``.. class:: language-el-polyton`` for a quote in polytonic Greek.

Default: English ("en").  Options: ``--language, -l``.

.. _class attribute: ../ref/doctree.html#classes

output_encoding
---------------

The text encoding for output.

Default: "UTF-8".  Options: ``--output-encoding, -o``.

output_encoding_error_handler
-----------------------------

The error handler for unencodable characters in the output. Acceptable
values include:

strict
    Raise an exception in case of an encoding error.
replace
    Replace malformed data with a suitable replacement marker,
    such as "?".
ignore
    Ignore malformed data and continue without further notice.
xmlcharrefreplace
    Replace with the appropriate XML character reference, such as
    "``&#8224;``".
backslashreplace
    Replace with backslashed escape sequences, such as "``\u2020``".

Acceptable values are the same as for the "error" parameter of
Python's ``encode`` string method; other values may be defined in
applications or in future versions of Python.

Default: "strict".
Options: ``--output-encoding-error-handler, --output-encoding, -o``.

record_dependencies
-------------------

Path to a file where Docutils will write a list of files that were
required to generate the output, e.g. included files or embedded
stylesheets [#dependencies]_. [#pwd]_ The format is one path per
line with forward slashes as separator, the encoding is ``utf8``.

Set to ``-`` in order to write dependencies to stdout.

This option is particularly useful in conjunction with programs like
``make`` using ``Makefile`` rules like::

  ham.html: ham.txt $(shell cat hamdeps.txt)
    rst2html.py --record-dependencies=hamdeps.txt ham.txt ham.html

If the filesystem encoding differs from utf8, replace the ``cat``
command with a call to a converter, e.g.::

  $(shell iconv -f utf8 -t latin1 hamdeps.txt)

Default: None.  Option: ``--record-dependencies``.

report_level
------------

Report system messages at or higher than <level>:

1  info
2  warning
3  error
4  severe
5  none

Default: warning (2).
Options: ``--report, -r, --verbose, -v, --quiet, -q``.

sectnum_xform
-------------

Enable or disable automatic section numbering by Docutils
(docutils.transforms.parts.SectNum) associated with the `sectnum
directive`_.

If disabled, section numbers might be added to the output by the
renderer (e.g. by LaTeX or via a CSS style definition).

Default: enabled (True).
Options: ``--section-numbering``, ``--no-section-numbering``.

.. _sectnum directive: ../ref/rst/directives.html#sectnum

source_link
-----------

Include a "View document source" link in the document footer.  URL will
be relative to the destination.

Default: don't (None).
Options: ``--source-link, -s, --no-source-link``.

source_url
----------

An explicit URL for a "View document source" link, used verbatim.

Default: compute if source_link (None).
Options: ``--source-url, --no-source-link``.

strict_visitor
--------------

When processing a document tree with the Visitor pattern, raise an
error if a writer does not support a node type listed as optional. For
transitional development use.

Default: disabled (None).
Option: ``--strict-visitor`` (hidden, for development use only).

strip_classes
-------------

Comma-separated list_ of "classes" attribute values to remove from all
elements in the document tree. The command line option may be used more
than once.

.. WARNING:: Potentially dangerous; use with caution.

Default: disabled (None).  Option: ``--strip-class``.

strip_comments
--------------

Enable the removal of comment elements from the document tree.

Default: disabled (None).
Options: ``--strip-comments``, ``--leave-comments``.

strip_elements_with_classes
---------------------------

Comma-separated list_ of "classes" attribute values;
matching elements are removed from the document tree.
The command line option may be used more than once.

.. WARNING:: Potentially dangerous; use with caution.

Default: disabled (None).  Option: ``--strip-element-with-class``.

title
-----

The `document title`_ as metadata, which does not become part of the
document body.  It overrides a document-supplied title.  For
example, in HTML output the metadata document title appears in the
title bar of the browser window.

Default: none.  Option: ``--title``.

.. _document title: ../ref/rst/restructuredtext.html#document-title

toc_backlinks
-------------

Enable backlinks from section titles to table of contents entries
("entry"), to the top of the TOC ("top"), or disable ("none").

Default: "entry".
Options: ``--toc-entry-backlinks, --toc-top-backlinks, --no-toc-backlinks``.

traceback
---------

Enable Python tracebacks when halt-level system messages and other
exceptions occur.  Useful for debugging, and essential for issue
reports.  Exceptions are allowed to propagate, instead of being
caught and reported (in a user-friendly way) by Docutils.

Default: disabled (None) unless Docutils is run programmatically
using the `Publisher Interface`_.
Options: ``--traceback, --no-traceback``.

.. _Publisher Interface: ../api/publisher.html

warning_stream
--------------

Path to a file for the output of system messages (warnings). [#pwd]_

Default: stderr (None).  Options: ``--warnings``.


[parsers]
=========

Docutils currently supports only one parser, for reStructuredText.


[restructuredtext parser]
-------------------------

character_level_inline_markup
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Experimental setting to relax the `inline markup recognition rules`_
requiring whitespace or punctuation around inline markup.

Allows character level inline markup without escaped whithespace and is
especially suited for langauges that do not use whitespace to separate words
(e.g. Japanese, Chinese).

.. WARNING:: Potentially dangerous; use with caution.

   When changing this setting to "True", inline markup charactes in
   URLs, names and formulas must be escaped to prevent recognition and
   possible errors. Examples::

     http://rST_for_all.html (hyperlinks to rST_ and for_)
     x_2, inline_markup      (hyperlinks to x_ and inline_)
     2*x                     (starts emphasised text)
     a|b                     (starts a substitution reference)

Default: disabled (False).
Options: ``--character-level-inline-markup, --word-level-inline-markup``.

New in Docutils 0.13.

file_insertion_enabled
~~~~~~~~~~~~~~~~~~~~~~

Enable or disable directives that insert the contents of external
files, such as the "include_" & "raw_".  A "warning" system
message (including the directive text) is inserted instead.  (See
also raw_enabled_ for another security-relevant setting.)

Default: enabled (True).
Options: ``--file-insertion-enabled, --no-file-insertion``.

.. _include: ../ref/rst/directives.html#include
.. _raw: ../ref/rst/directives.html#raw

pep_references
~~~~~~~~~~~~~~

Recognize and link to standalone PEP references (like "PEP 258").

Default: disabled (None); enabled (True) in PEP Reader.
Options: ``--pep-references``.

pep_base_url
~~~~~~~~~~~~
Base URL for PEP references.

Default: "http://www.python.org/peps/".
Option: ``--pep-base-url``.

pep_file_url_template
~~~~~~~~~~~~~~~~~~~~~

Template for PEP file part of URL, interpolated with the PEP
number and appended to pep_base_url_.

Default: "pep-%04d".  Option: ``--pep-file-url``.

raw_enabled
~~~~~~~~~~~

Enable or disable the "raw_" directive.  A "warning" system message
(including the directive text) is inserted instead.  (See also
file_insertion_enabled_ for another security-relevant setting.)

Default: enabled (True).  Options: ``--raw-enabled, --no-raw``.

rfc_references
~~~~~~~~~~~~~~

Recognize and link to standalone RFC references (like "RFC 822").

Default: disabled (None); enabled (True) in PEP Reader.
Options: ``--rfc-references``.

rfc_base_url
~~~~~~~~~~~~

Base URL for RFC references.

Default: "http://www.faqs.org/rfcs/".  Option: ``--rfc-base-url``.

smart_quotes
~~~~~~~~~~~~

Change straight quotation marks to typographic form. `Quote characters`_
are selected according to the language of the current block element (see
language_code_). Also changes consequtive runs of hyphen-minus and full
stops (``---``, ``--``, ``...``) to em-dash, en-dash and ellipsis Unicode
characters respectively.

Supported values:

booleans_ (yes/no)
  Use smart quotes?

alt (or "alternative")
  Use alternative quote set (if defined for the language).

Default: "no". Option: ``--smart-quotes``.

New in Docutils 0.10.

.. _quote characters:
   http://en.wikipedia.org/wiki/Non-English_usage_of_quotation_marks

syntax_highlight
~~~~~~~~~~~~~~~~

Token type names used by Pygments_ when parsing contents of the code_
directive and role.

Supported values:

long
  Use hierarchy of long token type names.
short
  Use short token type names. (For use with
  `Pygments-generated stylesheets`_.)
none
  No code parsing. Use this to avoid the "Pygments not
  found" warning when Pygments is not installed.

Default: "long".  Option: ``--syntax-highlight``.

New in Docutils 0.9.

.. _Pygments: http://pygments.org/
.. _code: ../ref/rst/directives.html#code
.. _Pygments-generated stylesheets:
   http://pygments.org/docs/cmdline/#generating-styles

tab_width
~~~~~~~~~

Number of spaces for hard tab expansion.

Default: 8.  Options: ``--tab-width``.

trim_footnote_reference_space
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Remove spaces before `footnote references`_.

Default: don't (None); may be overriden by a writer-specific
footnote_references__ default though.

Options: ``--trim-footnote-reference-space, --leave-footnote-reference-space``.

__ `footnote_references [latex2e writer]`_

.. @@@ do we want a setting for considering/ignoring SOURCE_DATE_EPOCH ?

  use_source_date_epoch
  ~~~~~~~~~~~~~~~~~~~~~

  Use timestamp from the `SOURCE_DATE_EPOCH`_ environment variable for the
  `date directive`_.

  With this setting and environment variable, Docutils-generated documentation
  can be part of `reproducible software builds`_

  Default: disabled (False).
  Options: ``--use-source-date-epoch``.

  New in Docutils 0.13.

  .. _SOURCE_DATE_EPOCH:
     https://reproducible-builds.org/specs/source-date-epoch/
  .. _reproducible software builds:
     https://reproducible-builds.org/
  .. _date directive: ../ref/rst/directives.html#date


[readers]
=========


[standalone reader]
-------------------

docinfo_xform
~~~~~~~~~~~~~

Enable or disable the `bibliographic field list`_ transform
(docutils.transforms.frontmatter.DocInfo).

Default: enabled (True).  Options: ``--no-doc-info``.

doctitle_xform
~~~~~~~~~~~~~~

Enable or disable the promotion of a lone top-level section title
to `document title`_ (and subsequent section title to document
subtitle promotion; docutils.transforms.frontmatter.DocTitle).

Default: enabled (True).  Options: ``--no-doc-title``.

sectsubtitle_xform
~~~~~~~~~~~~~~~~~~

Enable or disable the promotion of the title of a lone subsection
to a subtitle (docutils.transforms.frontmatter.SectSubTitle).

Default: disabled (0).  Options: ``--section-subtitles,
--no-section-subtitles``.


[pep reader]
------------

The `pep_references`_ and `rfc_references`_ settings
(`[restructuredtext parser]`_) are set on by default.


[python reader]
---------------

Not implemented.


[writers]
=========

[docutils_xml writer]
---------------------

.. Caution::

   * In Python versions older than 2.7.3 and 3.2.3, the newlines_ and
     indents_ options may adversely affect whitespace; use them only for
     reading convenience (see http://bugs.python.org/issue4147).

   * The XML declaration carries text encoding information. If the encoding
     is not UTF-8 or ASCII and the XML declaration is missing, standard
     tools may be unable to read the generated XML.

doctype_declaration
~~~~~~~~~~~~~~~~~~~

Generate XML with a DOCTYPE declaration.

Default: do (1).  Options: ``--no-doctype``.

indents
~~~~~~~

Generate XML with indents and newlines.

Default: don't (None).  Options: ``--indents``.

newlines
~~~~~~~~

Generate XML with newlines before and after tags.

Default: don't (None).  Options: ``--newlines``.

.. _xml_declaration [docutils_xml writer]:

xml_declaration
~~~~~~~~~~~~~~~

Generate XML with an XML declaration.  Also defined for the
`HTML Writer`__.

Default: do (1).  Options: ``--no-xml-declaration``.

__ `xml_declaration [html4css1 writer]`_


[html4css1 writer]
------------------

.. _attribution [html4css1 writer]:

attribution
~~~~~~~~~~~

Format for `block quote`_ attributions: one of "dash" (em-dash
prefix), "parentheses"/"parens", or "none".  Also defined for the
`LaTeX Writer <attribution [latex2e writer]_>`__.

Default: "dash".  Options: ``--attribution``.

cloak_email_addresses
~~~~~~~~~~~~~~~~~~~~~

Scramble email addresses to confuse harvesters.  In the reference
URI, the "@" will be replaced by %-escapes (as of RFC 1738).  In
the visible text (link text) of an email reference, the "@" and
all periods (".") will be surrounded by ``<span>`` tags.
Furthermore, HTML entities are used to encode these characters in
order to further complicate decoding the email address.  For
example, "abc@example.org" will be output as::

    <a class="reference" href="mailto:abc&#37;&#52;&#48;example&#46;org">
    abc<span>&#64;</span>example<span>&#46;</span>org</a>

.. Note:: While cloaking email addresses will have little to no
   impact on the rendering and usability of email links in most
   browsers, some browsers (e.g. the ``links`` browser) may decode
   cloaked email addresses incorrectly.

Default: don't cloak (None).  Option: ``--cloak-email-addresses``.

compact_lists
~~~~~~~~~~~~~

Remove extra vertical whitespace between items of bullet lists and
enumerated lists, when list items are all "simple" (i.e., items
each contain one paragraph and/or one "simple" sublist only).  The
behaviour can be specified directly via "class" attributes (values
"compact" and "open") in the document.

Default: enabled (True).
Options: ``--compact-lists, --no-compact-lists``.

compact_field_lists
~~~~~~~~~~~~~~~~~~~

Remove extra vertical whitespace between items of `field lists`_ that
are "simple" (i.e., all field bodies each contain at most one
paragraph).  The behaviour can be specified directly via "class"
attributes (values "compact" and "open") in the document.

Default: enabled (True).
Options: ``--compact-field-lists, --no-compact-field-lists``.

.. _embed_stylesheet [html4css1 writer]:

embed_stylesheet
~~~~~~~~~~~~~~~~

Embed the stylesheet in the output HTML file.  The stylesheet file
must specified by the stylesheet_path__ setting and must be
accessible during processing.
Also defined for the `LaTeX Writer <embed_stylesheet [latex2e writer]_>`__.

Default: enabled.  Options: ``--embed-stylesheet,
--link-stylesheet``.

__ `stylesheet_path [html4css1 writer]`_

field_name_limit
~~~~~~~~~~~~~~~~

The maximum width (in characters) for one-column `field names`_. Longer
field names will span an entire row of the table used to render the field
list.  0 indicates "no limit".  See also option_limit_.

Default: 14 (i.e. 14 characters).  Option: ``--field-name-limit``.

.. _footnote_references [html4css1 writer]:

footnote_references
~~~~~~~~~~~~~~~~~~~

Format for `footnote references`_, one of "superscript" or "brackets".
Also defined for the `LaTeX Writer <footnote_references [latex2e writer]_>`__.

Overrides [#override]_ trim_footnote_reference_space_, if
applicable. [#footnote_space]_

Default: "brackets".  Option: ``--footnote-references``.

initial_header_level
~~~~~~~~~~~~~~~~~~~~

The initial level for header elements.  This does not affect the
document title & subtitle; see doctitle_xform_.

Default: 1 (for "<h1>").  Option: ``--initial-header-level``.

math_output
~~~~~~~~~~~

The format of mathematical content (`math directive`_ and role) in
the output document. Supported values are (case insensitive):

:HTML:
  Format math in standard HTML enhanced by CSS rules.
  Requires the ``math.css`` stylesheet (in the system
  `stylesheet directory <stylesheet_dirs [html4css1 writer]_>`_

  A `stylesheet_path <stylesheet_path [html4css1 writer]_>`_
  can be appended after whitespace, the specified
  stylesheet(s) will only be referenced or embedded, if required
  (i.e. if there is mathematical content in the document).

:MathJax:
  Format math for display with MathJax_, a JavaScript-based math
  rendering engine that uses HTML/CSS, JavaScript, and unicode
  fonts for high-quality typesetting that is scalable and prints
  at full resolution.

  Pro:
    Works 'out of the box' across multiple browsers and platforms.

    Large set of `supported LaTeX math commands and constructs`__

    __ http://docs.mathjax.org/en/latest/tex.html#supported-latex-commands

  Con:
    Requires an Internet connection (or a local MathJax
    installation and configuration).

    Downloads JavaScript code from a third-party site.

  A custom URI can be appended after whitespace,
  for example a local installation ::

    math-output: MathJax file:/usr/share/javascript/mathjax/MathJax.js


:MathML:
  Embed math content as presentational MathML_.

  Pro:
    The W3C recommendation for math on the web.

    Self-contained documents (no JavaScript, no external downloads).

  Con:
    Docutil's latex2mathml converter supports only a small
    subset of LaTeX syntax.

    With the "html4css1" writer, the resulting HTML document does
    not validate, as there is no DTD for MathML + XHTML
    Transitional. However, MathML-enabled browsers will render it
    fine.

  An external converter can be appended after whitespace:

  * ``math-output: MathML blahtexml``

    blahtexml_ (C++) Fast conversion, support for many symbols and
    environments, but no "align" (or other equation-aligning) environment.

  * ``--math-output=MathML latexml``.

    LaTeXML_ (Perl) Comprehensive macro support but very slow

  * ``--math-output=MathML ttm``, support may be removed.

    No "matrix", "align" and  "cases" environments.

:LaTeX:
  Include literal LaTeX code.

  The failsave fallback.

Default: "HTML math.css" (MathML for the xhtml11 writer).
Option: ``--math-output``.

New in Docutils 0.8.

.. _math directive: ../ref/rst/directives.html#math
.. _MathJax: http://www.mathjax.org/
.. _MathPlayer: http://www.dessci.com/en/products/mathplayer/
.. _MathML: http://www.w3.org/TR/MathML/
.. _blahtexml: http://gva.noekeon.org/blahtexml/
.. _LaTeXML: http://dlmf.nist.gov/LaTeXML/
.. _ttm: http://hutchinson.belmont.ma.us/tth/mml/

option_limit
~~~~~~~~~~~~

The maximum width (in characters) for options in `option lists`_.
Longer options will span an entire row of the table used to render
the option list.  0 indicates "no limit".  See also
field_name_limit_.

Default: 14 (i.e. 14 characters).  Option: ``--option-limit``.

.. _stylesheet [html4css1 writer]:

stylesheet
~~~~~~~~~~

A comma-separated list of CSS stylesheet URLs, used verbatim.
Also defined for the `LaTeX Writer <stylesheet [latex2e writer]_>`__.

Overrides also stylesheet-path__. [#override]_

Default: None.  Options: ``--stylesheet``.

__ `stylesheet_path [html4css1 writer]`_

.. _stylesheet_dirs [html4css1 writer]:

stylesheet_dirs
~~~~~~~~~~~~~~~

A comma-separated list of directories where stylesheets can be found.
Used by the stylesheet_path__ setting when expanding relative path arguments.

Note: This setting defines a "search path" (similar to the PATH variable for
executables). However, the term "path" is already used in the
stylesheet_path__ setting with the meaning of a file location.

__
__ `stylesheet_path [html4css1 writer]`_

Default: the working directory of the process at launch and the directory
with default stylesheet files (writer and installation specific).
Use the ``--help`` option to get the exact value.
Option: ``--stylesheet-directories``.

.. _stylesheet_path [html4css1 writer]:

stylesheet_path
~~~~~~~~~~~~~~~

A comma-separated list of paths to CSS stylesheets. Relative paths are
expanded if a matching file is found in the stylesheet_dirs__.
If embed_stylesheet__ is False, paths are rewritten relative to the
output HTML file. Also defined for the `LaTeX Writer`__.

Also overrides "stylesheet". [#override]_
Pass an empty string (to either "stylesheet" or "stylesheet_path") to
deactivate stylesheet inclusion.

Default: "html4css1.css".
Options: ``--stylesheet-path``.

__ `embed_stylesheet [html4css1 writer]`_
__ `stylesheet_path [latex2e writer]`_
__ `stylesheet_dirs [html4css1 writer]`_

.. _table_style [html4css1 writer]:

table_style
~~~~~~~~~~~

Class value(s) added to all tables_.
Also defined for the `LaTeX Writer`__.

The default CSS sylesheet defines:

borderless
  No borders around the table.

booktabs
  Lines above and below the table and a thin line after the head.

align-left, align-center, align-right
  Align the tables

.. note::

  The html5 writer also supports:

  colwidths-auto
    Delegate the determination of table column widths to the backend
    (Leave out the ``<colgroup>`` column specification.)

    Cf. the `table directive`_.

Default: "".  Option: ``--table-style``.

__ `table_style [latex2e writer]`_
.. _table directive: ../ref/rst/directives.html#table

.. _template [html4css1 writer]:

template
~~~~~~~~

Path to template file, which must be encoded in UTF-8. [#pwd]_
Also defined for the `LaTeX Writer`__.

Default: "template.txt" in the docutils/writers/html4css1/
directory (installed automatically; for the exact machine-specific
path, use the ``--help`` option).  Options: ``--template``.

__ `template [latex2e writer]`_

.. _xml_declaration [html4css1 writer]:

xml_declaration
~~~~~~~~~~~~~~~

Generate XML with an XML declaration.  Also defined for the
`Docutils XML Writer`__.

.. Caution:: The XML declaration carries text encoding information.  If the
   encoding is not UTF-8 or ASCII and the XML declaration is missing,
   standard tools may be unable to read the generated XHTML.

Default: do (1).  Options: ``--no-xml-declaration``.

__ `xml_declaration [docutils_xml writer]`_


[pep_html writer]
~~~~~~~~~~~~~~~~~

The PEP/HTML Writer derives from the standard HTML Writer, and shares
all settings defined in the `[html4css1 writer]`_ section.  The
"[html4css1 writer]" section of configuration files is processed
before the "[pep_html writer]" section.

The PEP/HTML Writer's default for the following settings differ from
those of the standard HTML Writer:

`stylesheet_path <stylesheet_path [html4css1 writer]_>`_:
  Default: "pep.css"

`template <template [html4css1 writer]_>`_:
  Default: ``docutils/writers/pep_html/template.txt`` in the installation
  directory.  For the exact machine-specific path, use the ``--help``
  option.

no_random
"""""""""
Do not use a random banner image.  Mainly used to get predictable
results when testing.

Default: random enabled (None).  Options: ``--no-random`` (hidden).

pep_home
""""""""

Home URL prefix for PEPs.

Default: current directory (".").  Options: ``--pep-home``.

python_home
"""""""""""
Python's home URL.

Default: parent directory ("..").  Options: ``--python-home``.


[s5_html writer]
~~~~~~~~~~~~~~~~

The S5/HTML Writer derives from the standard HTML Writer, and shares
all settings defined in the `[html4css1 writer]`_ section.  The
"[html4css1 writer]" section of configuration files is processed
before the "[s5_html writer]" section.

The S5/HTML Writer's default for the following settings differ
from those of the standard HTML Writer:

compact_lists_:
    Default: disable compact lists.

template_:
  Default: ``docutils/writers/s5_html/template.txt`` in the installation
  directory.  For the exact machine-specific path, use the ``--help``
  option.


hidden_controls
"""""""""""""""

Auto-hide the presentation controls in slideshow mode, or or keep
them visible at all times.

Default: auto-hide (1).  Options: ``--hidden-controls``,
``--visible-controls``.

current_slide
"""""""""""""

Enable or disable the current slide indicator ("1/15").

Default: disabled (None).  Options: ``--current-slide``,
``--no-current-slide``.

overwrite_theme_files
"""""""""""""""""""""

Allow or prevent the overwriting of existing theme files in the
``ui/<theme>`` directory.  This has no effect if "theme_url_" is
used.

Default: keep existing theme files (None).  Options:
``--keep-theme-files``, ``--overwrite-theme-files``.

theme
"""""

Name of an installed S5 theme, to be copied into a ``ui/<theme>``
subdirectory, beside the destination file (output HTML).  Note
that existing theme files will not be overwritten; the existing
theme directory must be deleted manually.
Also overrides the "theme_url_" setting. [#override]_

Default: "default".  Option: ``--theme``.

theme_url
"""""""""
The URL of an S5 theme directory.  The destination file (output
HTML) will link to this theme; nothing will be copied.  Also overrides
the "theme_" setting. [#override]_

Default: None.  Option: ``--theme-url``.

view_mode
"""""""""

The initial view mode, either "slideshow" or "outline".

Default: "slidewhow".  Option: ``--view-mode``.


[html5 writer]
--------------

The `html5` writer uses the settings described in the `[html4css1
writer]`_ section with the following exceptions:

Removed options:
  `field_name_limit`_, `option_limit`_.

Different default for:

`stylesheet_path <stylesheet_path [html4css1 writer]_>`_:
  Default: "minimal.css,plain.css"

`stylesheet_dirs <stylesheet_dirs [html4css1 writer]_>`_:
  Default: Installation-dependent. Use the --help option to get the exact
  value.

New in Docutils 0.13.


[latex2e writer]
----------------

use_latex_toc
~~~~~~~~~~~~~

To get pagenumbers in the `table of contents`_, it
must be generated by LaTeX. Usually latex must be run twice to get
numbers correct.

Default: on.  Options: ``--use-latex-toc, --use-docutils-toc``.

use_latex_docinfo
~~~~~~~~~~~~~~~~~

Attach author and date to the `document title`_
instead of the `bibliographic fields`_.

Default: off.  Options: ``--use-latex-docinfo, --use-docutils-docinfo``.

docutils_footnotes
~~~~~~~~~~~~~~~~~~
Use the Docutils-specific macros ``\DUfootnote`` and
``\DUfootnotetext`` for footnotes_.

Default: on.  Option: ``--docutils-footnotes``.

use_latex_citations
~~~~~~~~~~~~~~~~~~~

Use \cite for citations_ instead of a simulation with figure-floats.

Default: off.  Options: ``--use-latex-citations, --figure-citations``.

use_latex_abstract
~~~~~~~~~~~~~~~~~~

Use LaTeX abstract environment for the document's abstract_.

Default: off.  Options: ``--use-latex-abstract, --topic-abstract``.

hyperlink_color
~~~~~~~~~~~~~~~

Color of any hyperlinks embedded in text.

* "0" or "false" disable coloring of links. (Links will be marked
  by red boxes that are not printed),
* "black" results in “invisible“ links,

Set hyperref_options_ to "draft" to completely disable hyperlinking.

Default: "blue".  Option: ``--hyperlink-color``.

hyperref_options
~~~~~~~~~~~~~~~~

Options for the `hyperref TeX package`_. If hyperlink_color_ is
not "false", the expansion of ::

  'colorlinks=true,linkcolor=%s,urlcolor=%s' % (
     hyperlink_color, self.hyperlink_color

is prepended.

Default: "".   Option: ``--hyperref-options``.

.. _hyperref TeX package: http://tug.org/applications/hyperref/

documentclass
~~~~~~~~~~~~~

Specify LaTeX documentclass.

Default: "article".  Option: ``--documentclass``.

documentoptions
~~~~~~~~~~~~~~~

Specify document options.  Multiple options can be given, separated by
commas.

Default: "a4paper".  Option: ``--documentoptions``.

font_encoding
~~~~~~~~~~~~~

Specify LaTeX font encoding. Multiple options can be given, separated by
commas. The last value becomes the document default.
Possible values are "", "T1", "OT1", "LGR,T1" or any other combination of
`LaTeX font encodings`_.

Default: "T1".  Option: ``--font-encoding``.

.. _LaTeX font encodings:
   http://mirror.ctan.org/macros/latex/doc/encguide.pdf

.. _embed_stylesheet [latex2e writer]:

embed_stylesheet
~~~~~~~~~~~~~~~~

Embed the stylesheet(s) in the header of the output file.  The
stylesheets must be accessible during processing.  Currently, this
fails if the file is not available via the given path (i.e. the
file is *not* searched in the `TeX input path`_).
Also defined for the `HTML Writer`__ (with default *on*).

Default: off.  Options: ``--embed-stylesheet, --link-stylesheet``.

__ `embed_stylesheet [html4css1 writer]`_

.. _stylesheet [latex2e writer]:

stylesheet
~~~~~~~~~~

A comma-separated list_ of style files.
Also defined for the `HTML Writer`__.

Overrides also stylesheet_path__. [#override]_

If `embed_stylesheet`__ is False (default), the stylesheet files are
referenced with ``\usepackage`` (extension ``.sty`` or no extension) or
``\input`` (any other extension).

LaTeX will search the specified files in the `TeX input path`_.

Default: no stylesheet ("").  Option: ``--stylesheet``.

__ `stylesheet_path [latex2e writer]`_
__ `embed_stylesheet [latex2e writer]`_
__ `stylesheet [html4css1 writer]`_
.. _TeX input path:
   http://www.tex.ac.uk/cgi-bin/texfaq2html?label=what-TDS


.. _stylesheet_dirs [latex2e writer]:

stylesheet_dirs
~~~~~~~~~~~~~~~

A comma-separated list of directories where stylesheets can be found.
Used by the stylesheet_path__ setting.

Note: This setting defines a "search path" (similar to the PATH variable for
executables). However, the term "path" is already used in the
stylesheet_path__ setting with the meaning of a file location.

__
__ `stylesheet_path [latex2e writer]`_

Default: the working directory of the process at launch and the directory
with default stylesheet files (writer and installation specific).
Use the ``--help`` option to get the exact value.
Option: ``--stylesheet-directories``.

.. _stylesheet_path [latex2e writer]:

stylesheet_path
~~~~~~~~~~~~~~~

A comma-separated list of style files. Relative paths are expanded if a
matching file is found in the stylesheet_dirs__.
If embed_stylesheet__ is False, paths are rewritten relative to the
output file path. Run ``latex`` from the directory containing
the output file.

The stylesheet__  option is preferred for files in the `TeX input path`_.

Also defined for the
`HTML Writer <stylesheet_path [html4css1 writer]_>`__.

Also overrides stylesheet__. [#override]_

Default: no stylesheet ("").  Option: ``--stylesheet-path``.

__ `stylesheet_dirs [latex2e writer]`_
__ `embed_stylesheet [latex2e writer]`_
__
__ `stylesheet [latex2e writer]`_


latex_preamble
~~~~~~~~~~~~~~

LaTeX code that will be inserted in the document preamble.
Can be used to load packages with options or (re-) define LaTeX
macros without writing a custom style file (new in Docutils 0.7).

Default: Load the "PDF standard fonts" (Times, Helvetica,
Courier)::

  \usepackage{mathptmx} % Times
  \usepackage[scaled=.90]{helvet}
  \usepackage{courier}

Option: ``--latex-preamble``.

.. _footnote_references [latex2e writer]:

footnote_references
~~~~~~~~~~~~~~~~~~~

Format for `footnote references`_: one of "superscript" or
"brackets".  Also defined for the `HTML Writer`__.

Overrides [#override]_ trim_footnote_reference_space_, if
applicable [#footnote_space]_.

Default: "superscript".  Option: ``--footnote-references``.

__ `footnote_references [html4css1 writer]`_

.. _attribution [latex2e writer]:

attribution
~~~~~~~~~~~

See `attribution [html4css1 writer]`_.

compound_enumerators
~~~~~~~~~~~~~~~~~~~~

Enable or disable compound enumerators for nested `enumerated lists`_
(e.g. "1.2.a.ii").

Default: disabled (None).
Options: ``--compound-enumerators``, ``--no-compound-enumerators``.

literal_block_env
~~~~~~~~~~~~~~~~~

When possibile\ [#]_, use the specified environment for `literal blocks`_.

Default: "" (quoting of whitespace and special chars).
Option: ``--literal-block-env``.

.. [#] A literal-block element, when processed by a Docutils writer might
   have it's origin in literal block following "::" or a
   ``.. parsed-literal::`` directive.

   A LaTeX verbatim environment is only usable if there is no other
   markup contained in the literal-block.


section_prefix_for_enumerators
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Enable or disable section ("." subsection ...) prefixes for
compound enumerators.  This has no effect unless
`compound_enumerators`_ are enabled.

Default: disabled (None).
Options: ``--section-prefix-for-enumerators``,
``--no-section-prefix-for-enumerators``.

section_enumerator_separator
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The separator between section number prefix and enumerator for
compound enumerated lists (see `compound_enumerators`_).

Generally it isn't recommended to use both sub-sections and nested
enumerated lists with compound enumerators.  This setting avoids
ambiguity in the situation where a section "1" has a list item
enumerated "1.1", and subsection "1.1" has list item "1".  With a
separator of ".", these both would translate into a final compound
enumerator of "1.1.1".  With a separator of "-", we get the
unambiguous "1-1.1" and "1.1-1".

Default: "-".  Option: ``--section-enumerator-separator``.

.. _table_style [latex2e writer]:

table_style
~~~~~~~~~~~

Specify the default style for tables_
Also defined for the `HTML Writer`__.

Supported values:

standard
  Borders around all cells.
booktabs
  A line above and below the table and one after the head.
borderless
  No borders.

align-left, align-center, align-right
  Align tables.

colwidths-auto, colwidths-given
  Default value for column width determination by
  LaTeX or Docutils.
  Override with the `table directive`_'s :widths: option.

  .. warning::

    ``colwidths-auto`` is only suited for tables with simple cell content.

    LaTeX puts the content of auto-sized columns on one line (merging
    paragraphs) and may fail with complex content.

Default: "standard".  Option: ``--table-style``.

__ `table_style [html4css1 writer]`_


.. _template [latex2e writer]:

template
~~~~~~~~

Path to template file, which must be encoded in UTF-8. [#pwd]_
Also defined for the `HTML Writer`__.

Default: "default.tex" in the docutils/writers/latex2e/
directory (installed automatically; for the exact machine-specific
path, use the ``--help`` option).  Options: ``--template``.

__ `template [html4css1 writer]`_


[xetex writer]
~~~~~~~~~~~~~~

The xetex writer derives from the latex2e writer, and shares
all settings defined in the `[latex2e writer]`_ section.  The
"[latex2e writer]" section of configuration files is processed
before the "[xetex writer]" section.

The following settings differ from those of the latex2e writer:

font_encoding_
    Disabled  (Use Unicode-encoded fonts).

latex_preamble_
    Default: Font setup for `Linux Libertine`_,::

      % Linux Libertine (free, wide coverage, not only for Linux)
      \setmainfont{Linux Libertine O}
      \setsansfont{Linux Biolinum O}
      \setmonofont[HyphenChar=None]{DejaVu Sans Mono}

  The optional argument ``HyphenChar=None`` to the monospace font
  prevents word hyphenation in literal text.

template__
    Default: "xelatex.tex"

.. _Linux Libertine: http://www.linuxlibertine.org/
__ `template [latex2e writer]`_


[odf_odt writer]
----------------

The following command line options are specific to ``odtwriter``:

stylesheet
~~~~~~~~~~

Specify a stylesheet URL, used verbatim.

Default: writers/odf_odt/styles.odt in the installation directory.

odf-config-file
~~~~~~~~~~~~~~~

Specify a configuration/mapping file relative to the current working
directory for additional ODF options. In particular, this file may
contain a section named "Formats" that maps default style names to names
to be used in the resulting output file allowing for adhering to external
standards. For more info and the format of the configuration/mapping
file, see the `Odt Writer for Docutils`_ document.

cloak-email-addresses
~~~~~~~~~~~~~~~~~~~~~

Obfuscate email addresses to confuse harvesters while still
keeping email links usable with standards-compliant browsers.

no-cloak-email-addresses
~~~~~~~~~~~~~~~~~~~~~~~~
Do not obfuscate email addresses.

table-border-thickness
~~~~~~~~~~~~~~~~~~~~~~

Specify the thickness of table borders in thousands of a cm.
Default is 35.

add-syntax-highlighting
~~~~~~~~~~~~~~~~~~~~~~~

Add syntax highlighting in literal code blocks.

no-syntax-highlighting
~~~~~~~~~~~~~~~~~~~~~~

Do not add syntax highlighting in literal code blocks.
(default)

create-sections
~~~~~~~~~~~~~~~

Create sections for headers.  (default)

no-sections
~~~~~~~~~~~

Do not create sections for headers.

create-links
~~~~~~~~~~~~
Create links.

no-links
~~~~~~~~

Do not create links.  (default)

endnotes-end-doc
~~~~~~~~~~~~~~~~

Generate endnotes at end of document, not footnotes at bottom of page.

no-endnotes-end-doc
~~~~~~~~~~~~~~~~~~~

Generate footnotes at bottom of page, not endnotes at end of
document. (default)

generate-list-toc
~~~~~~~~~~~~~~~~~

Generate a bullet list table of contents, not an
ODF/``oowriter`` table of contents.

generate-oowriter-toc
~~~~~~~~~~~~~~~~~~~~~

Generate an ODF/``oowriter`` table of contents, not a bullet
list.  (default) **Note:** ``odtwriter`` is not able to
determine page numbers, so you will need to open the generated
document in ``oowriter``, then right-click on the table of
contents and select "Update" to insert page numbers.

custom-odt-header
~~~~~~~~~~~~~~~~~

Specify the contents of a custom header line.  For details about
custom headers and about special field character sequences, see
section "Custom header/footers: inserting page numbers, date,
time, etc" in the `Odt Writer for Docutils`_ document for
details.

custom-odt-footer
~~~~~~~~~~~~~~~~~

Specify the contents of a custom footer line.  For details about
custom footers and about special field character sequences, see
section "Custom header/footers: inserting page numbers, date,
time, etc" in the `Odt Writer for Docutils`_ document for
details.

.. _Odt Writer for Docutils: odt.html


[pseudoxml writer]
------------------

This writer does not define specific settings.


[applications]
==============

[buildhtml application]
-----------------------

ignore
~~~~~~

List_ of wildcard (shell globing) patterns, specifying files to silently
ignore.  To specify multiple patterns, use colon-separated patterns (in
configuration files or on the command line); on the command line, the
option may also be used more than once.

Default: none.  Options: ``--ignore``.

prune
~~~~~

List_ of directories not to process.  To specify multiple
directories, use colon-separated paths (in configuration files or
on the command line); on the command line, the option may also be
used more than once.

Default: ['.hg', '.bzr', '.git', '.svn', 'CVS'].  Options:
``--prune``.

recurse
~~~~~~~

Recursively scan subdirectories, or ignore subdirectories.

Default: recurse (1).  Options: ``--recurse, --local``.

silent
~~~~~~

Work silently (no progress messages).  Independent of
"report_level".

Default: show progress (None).  Options: ``--silent``.


[docfactory application]
------------------------

(To be completed.)


Other Settings
==============

Command-Line Only
-----------------

These settings are only effective as command-line options; setting
them in configuration files has no effect.

config
~~~~~~

Path to a configuration file to read (if it exists). [#pwd]_
Settings may override defaults and earlier settings.  The config
file is processed immediately.  Multiple ``--config`` options may
be specified; each will be processed in turn.

Filesystem path settings contained within the config file will be
interpreted relative to the config file's location (*not* relative
to the current working directory).

Default: None.  Options: ``--config``.


Internal Settings
-----------------

These settings are for internal use only; setting them in
configuration files has no effect, and there are no corresponding
command-line options.

_config_files
~~~~~~~~~~~~~

List of paths of applied configuration files.

Default: None.  No command-line options.

_directories
~~~~~~~~~~~~

(``buildhtml.py`` front end.)  List of paths to source
directories, set from positional arguments.

Default: current working directory (None).  No command-line
options.

_disable_config
~~~~~~~~~~~~~~~

Prevent standard configuration files from being read.  For
programmatic use only.

Default: config files enabled (None).  No command-line options.

_destination
~~~~~~~~~~~~

Path to output destination, set from positional arguments.

Default: stdout (None).  No command-line options.

_source
~~~~~~~

Path to input source, set from positional arguments.

Default: stdin (None).  No command-line options.


.. _language tag: http://www.w3.org/International/articles/language-tags/
.. _BCP 47: http://www.rfc-editor.org/rfc/bcp/bcp47.txt
.. _ISO 639: http://www.loc.gov/standards/iso639-2/php/English_list.php
.. _ISO 3166: http://www.iso.ch/iso/en/prods-services/iso3166ma/
   02iso-3166-code-lists/index.html

.. [#pwd] Path relative to the working directory of the process at
   launch.

.. [#override] The overridden setting will automatically be set to
   ``None`` for command-line options and config file settings.  Client
   programs which specify defaults that override other settings must
   do the overriding explicitly, by assigning ``None`` to the other
   settings.

.. [#dependencies] Images are only added to the dependency list if the
   reStructuredText parser extracted image dimensions from the file.

.. [#footnote_space] The footnote space is trimmed if the reference
   style is "superscript", and it is left if the reference style is
   "brackets".

   The overriding only happens if the parser supports the
   trim_footnote_reference_space option.


------------------------------
Old-Format Configuration Files
------------------------------

Formerly, Docutils configuration files contained a single "[options]"
section only.  This was found to be inflexible, and in August 2003
Docutils adopted the current component-based configuration file
sections as described above.  Docutils will still recognize the old
"[options]" section, but complains with a deprecation warning.

To convert existing config files, the easiest way is to change the
section title: change "[options]" to "[general]".  Most settings
haven't changed.  The only ones to watch out for are these:

=====================  =====================================
Old-Format Setting     New Section & Setting
=====================  =====================================
pep_stylesheet         [pep_html writer] stylesheet
pep_stylesheet_path    [pep_html writer] stylesheet_path
pep_template           [pep_html writer] template
=====================  =====================================

.. References

.. _abstract:
.. _bibliographic field list:
.. _bibliographic fields:
   ../ref/rst/restructuredtext.html#bibliographic-fields
.. _block quote: ../ref/rst/restructuredtext.html#block-quotes
.. _citations: ../ref/rst/restructuredtext.html#citations
.. _enumerated lists: ../ref/rst/restructuredtext.html#enumerated-lists
.. _field lists: ../ref/rst/restructuredtext.html#field-lists
.. _field names: ../ref/rst/restructuredtext.html#field-names
.. _footnotes: ../ref/rst/restructuredtext.html#footnotes
.. _footnote references: ../ref/rst/restructuredtext.html#footnote-references
.. _inline markup recognition rules:
    ../ref/rst/restructuredtext.html#inline-markup-recognition-rules
.. _literal blocks: ../ref/rst/restructuredtext.html#literal-blocks
.. _option lists: ../ref/rst/restructuredtext.html#option-lists
.. _tables: ../ref/rst/restructuredtext.html#tables

.. _table of contents: ../ref/rst/directives.html#contents