doctools_lang_syntax(n) 					Documentation tools					   doctools_lang_syntax(n)

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NAME

       doctools_lang_syntax - doctools language syntax

DESCRIPTION

       This document contains the formal specification of the syntax of the doctools markup language, version 1 in Backus-Naur-Form. This document
       is intended to be a reference, complementing the doctools language command reference.  A beginner should  read  the  much  more	informally
       written doctools language introduction first before trying to understand either this document or the command reference.

FUNDAMENTALS

       In  the	broadest terms possible the doctools markup language is LaTeX-like, instead of like SGML and similar languages. A document written
       in this language consists primarily of text, with markup commands embedded into it.

       Each markup command is a just Tcl command surrounded by a matching pair of [ and ]. Which commands are available, and their arguments, i.e.
       syntax is specified in the doctools language command reference.

       In this document we specify first the lexeme, and then the syntax, i.e. how we can mix text and markup commands with each other.

LEXICAL DEFINITIONS

       In the syntax rules listed in the next section

       [1]    <TEXT> stands for all text except markup commands.

       [2]    Any  XXX	stands for the markup command [xxx] including its arguments. Each markup command is a Tcl command surrounded by a matching
	      pair of [ and ]. Inside of these delimiters the usual rules for a Tcl command apply with regard to word quotation, nested  commands,
	      continuation lines, etc.

       [3]    <WHITE> stands for all text consisting only of spaces, newlines, tabulators and the comment markup command.

SYNTAX

       The rules listed here specify only the syntax of doctools documents. The lexical level of the language was covered in the previous section.

       Regarding the syntax of the (E)BNF itself

       [1]    The construct { X } stands for zero or more occurrences of X.

       [2]    The construct [ X ] stands for zero or one occurrence of X.

       [3]    The construct LIST_BEGIN<X> stands for the markup command list_begin with X as its type argument.

       The syntax:

       manpage = defs
		 MANPAGE_BEGIN
		 header
		 DESCRIPTION
		 body
		 MANPAGE_END
		 { <WHITE> }

       defs    = { INCLUDE | VSET | <WHITE> }

       header  = { TITLEDESC | MODDESC | COPYRIGHT | REQUIRE | defs | xref }

       xref    = KEYWORDS | SEE_ALSO | CATEGORY

       body    = paras { SECTION    sbody  }
       sbody   = paras { SUBSECTION ssbody }
       ssbody  = paras

       paras   = tblock { (PARA | NL) tblock }

       tblock  = { <TEXT> | defs | markup | xref | an_example | a_list }

       markup  = ARG	 | CLASS | CMD	   | CONST     | EMPH	| FILE
	       | FUN	 | LB	 | METHOD  | NAMESPACE | OPT	| OPTION
	       | PACKAGE | RB	 | SECTREF | STRONG    | SYSCMD | TERM
	       | TYPE	 | URI	 | USAGE   | VAR       | WIDGET

       example = EXAMPLE
	       | EXAMPLE_BEGIN extext EXAMPLE_END

       extext  = { <TEXT> | defs | markup }

       a_list  = LIST_BEGIN<arguments>	 argd_list   LIST_END
	       | LIST_BEGIN<commands>	 cmdd_list   LIST_END
	       | LIST_BEGIN<definitions> def_list    LIST_END
	       | LIST_BEGIN<enumerated>  enum_list   LIST_END
	       | LIST_BEGIN<itemized>	 item_list   LIST_END
	       | LIST_BEGIN<options>	 optd_list   LIST_END
	       | LIST_BEGIN<tkoptions>	 tkoptd_list LIST_END

       argd_list   = [ <WHITE> ] { ARG_DEF	paras }
       cmdd_list   = [ <WHITE> ] { CMD_DEF	paras }
       def_list    = [ <WHITE> ] { (DEF|CALL)	paras }
       enum_list   = [ <WHITE> ] { ENUM 	paras }
       item_list   = [ <WHITE> ] { ITEM 	paras }
       optd_list   = [ <WHITE> ] { OPT_DEF	paras }
       tkoptd_list = [ <WHITE> ] { TKOPTION_DEF paras }

BUGS, IDEAS, FEEDBACK
       This  document,	will  undoubtedly  contain bugs and other problems.  Please report such in the category doctools of the Tcllib SF Trackers
       [http://sourceforge.net/tracker/?group_id=12883].  Please also report any ideas for enhancements you may have.

SEE ALSO

       doctools_intro, doctools_lang_cmdref, doctools_lang_faq, doctools_lang_intro

KEYWORDS

       doctools commands, doctools language, doctools markup, doctools syntax, markup, semantic markup

COPYRIGHT

       Copyright (c) 2007 Andreas Kupries <andreas_kupries@users.sourceforge.net>

doctools								1.0						   doctools_lang_syntax(n)