|Copyright:||This document has been placed in the public domain.|
This document describes standard definition files, such as sets of substitution definitions and interpreted text roles, that can be included in reStructuredText documents. The “include” directive has a special syntax for these standard definition files, angle brackets around the file name:
.. include:: <filename.txt>
The individual data files are stored with the Docutils source code in the “docutils” package, in the docutils/parsers/rst/include directory.
Many of the standard definition files contain sets of substitution definitions, which can be used in documents via substitution references. For example, the copyright symbol is defined in isonum.txt as “copy”:
.. include:: <isonum.txt> Copyright |copy| 2003 by John Q. Public, all rights reserved.
Individual substitution definitions can also be copied from definition files and pasted into documents. This has two advantages: it removes dependencies, and it saves processing of unused definitions. However, multiple substitution definitions add clutter to the document.
Substitution references require separation from the surrounding text with whitespace or punctuation. To use a substitution without intervening whitespace, you can use the disappearing-whitespace escape sequence, backslash-space:
.. include:: isonum.txt Copyright |copy| 2003, BogusMegaCorp\ |trade|.
Custom substitution definitions may use the “unicode” directive. Whitespace is ignored and removed, effectively sqeezing together the text:
.. |copy| unicode:: U+000A9 .. COPYRIGHT SIGN .. |BogusMegaCorp (TM)| unicode:: BogusMegaCorp U+2122 .. with trademark sign Copyright |copy| 2003, |BogusMegaCorp (TM)|.
In addition, the “ltrim”, “rtrim”, and “trim” options may be used with the “unicode” directive to automatically trim spaces from the left, right, or both sides (respectively) of substitution references:
.. |---| unicode:: U+02014 .. em dash :trim:
The following files contain substitution definitions corresponding to XML character entity sets, from the following standards: ISO 8879 & ISO 9573-13 (combined), MathML, and XHTML1. They were generated by the tools/dev/unicode2rstsubs.py program from the input file unicode.xml, which is maintained as part of the MathML 2 Recommentation XML source.
|Entity Set File||Description|
|isoamsa.txt||Added Mathematical Symbols: Arrows|
|isoamsb.txt||Added Mathematical Symbols: Binary Operators|
|isoamsc.txt||Added Mathematical Symbols: Delimiters|
|isoamsn.txt||Added Mathematical Symbols: Negated Relations|
|isoamso.txt||Added Mathematical Symbols: Ordinary|
|isoamsr.txt||Added Mathematical Symbols: Relations|
|isobox.txt||Box and Line Drawing|
|isogrk4.txt ||Alternative Greek Symbols|
|isolat1.txt||Added Latin 1|
|isolat2.txt||Added Latin 2|
|isomfrk.txt ||Mathematical Fraktur|
|isomopf.txt ||Mathematical Openface (Double-struck)|
|isomscr.txt ||Mathematical Script|
|isonum.txt||Numeric and Special Graphic|
|mmlalias.txt||MathML aliases for entities from other sets|
|mmlextra.txt ||Extra names added by MathML|
|xhtml1-lat1.txt||XHTML Latin 1|
|xhtml1-special.txt||XHTML Special Characters|
|xhtml1-symbol.txt||XHTML Mathematical, Greek and Symbolic Characters|
|||(1, 2, 3, 4, 5) There are *-wide.txt variants for each of these character entity set files, containing characters outside of the Unicode basic multilingual plane or BMP (wide-Unicode; code points greater than U+FFFF). Most pre-built Python distributions are “narrow” and do not support wide-Unicode characters. Python can be built with wide-Unicode support though; consult the Python build instructions for details.|
For example, the copyright symbol is defined as the XML character entity ©. The equivalent reStructuredText substitution reference (defined in both isonum.txt and xhtml1-lat1.txt) is |copy|.