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# docidx_lang_cmdref(n) 1.0 tcllib "Documentation tools"

## Name

docidx_lang_cmdref - docidx language command reference

## Table Of Contents

## Synopsis

- comment plaintext
- include filename
- index_begin text title
- index_end
- key text
- lb
- manpage file text
- rb
- url url label
- vset varname value
- vset varname

## Description

This document specifies both names and syntax of all the commands which together are the docidx markup language, version 1. As this document is intended to be a reference the commands are listed in alphabetical order, and the descriptions are relatively short. A beginner should read the much more informally written docidx language introduction first.

## Commands

comment plaintext

  Index markup. The argument text is marked up as a comment standing outside of the actual text of the document. Main use is in free-form text.

include filename

  Templating. The contents of the named file are interpreted as text written in the docidx markup and processed in the place of the include command. The markup in the file has to be self-contained. It is not possible for a markup command to cross the file boundaries.

index_begin text title

  Document structure. The command to start an index. The arguments are a label for the whole group of documents the index refers to (text) and the overall title text for the index (title), without markup.

  The label often is the name of the package (or extension) the documents belong to.

index_end

  Document structure. Command to end an index. Anything in the document coming after this command is in error.

key text

  Index structure. This command adds the keyword text to the index.

lb

  Text. The command is replaced with a left bracket. Use in free-form text. Required to avoid interpretation of a left bracket as the start of a markup command. Its usage is restricted to the arguments of other markup commands.

manpage file text

  Index structure. This command adds an element to the index which refers to a document. The document is specified through the symbolic name file. The text argument is used to label the reference.

  Symbolic names are used to preserve the convertibility of this format to any output format. The actual name of the file will be inserted by the chosen formatting engine when converting the input. This will be based on a mapping from symbolic to actual names given to the engine.

rb

  Text. The command is replaced with a right bracket. Use in free-form text. Required to avoid interpretation of a right bracket as the end of a markup command. Its usage is restricted to the arguments of other commands.

url url label

  Index structure. This is the second command to add an element to the index. To refer to a document it is not using a symbolic name however, but a (possibly format-specific) url describing the exact location of the document indexed here.

vset varname value

  Templating. In this form the command sets the named document variable to the specified value. It does not generate output. I.e. the command is replaced by the empty string.

vset varname

  Templating. In this form the command is replaced by the value of the named document variable

## Bugs, Ideas, Feedback

This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category doctools of the Tcllib Trackers. Please also report any ideas for enhancements you may have for either package and/or documentation.

## See Also

docidx_intro, docidx_lang_faq, docidx_lang_intro, docidx_lang_syntax

## Keywords

docidx commands, docidx language, docidx markup, markup, semantic markup

## Category

Documentation tools

## Copyright

Copyright © 2007 Andreas Kupries <andreas_kupries@users.sourceforge.net>