# $Id$
#
# >>Copyright::
# Copyright (c) 1992-1996, Ian Clatworthy (ianc@mincom.com).
# You may distribute under the terms specified in the LICENSE file.
#
# >>History::
# -----------------------------------------------------------------------
# Date      Who     Change
# 29-Feb-96 ianc    SDF 2.000
# -----------------------------------------------------------------------
#

H1: Language overview

H2: Basic concepts

The basic concepts within SDF documents are:

!block table
Concept     Description
paragraph   one or more lines of text
phrase      a section of text within a paragraph
style       the type of a document, paragraph, phrase or table (e.g. H1)
macro       a command embedded in a document (e.g. !define)
variable    a named value (e.g. DOC_NAME)
filter      a rule to use when processing certain sections of text (e.g. table)
attribute   a named parameter of a paragraph, phrase or filter (e.g. jump)
expression  a literal or expression to evaluate (e.g. "Ian Clatworthy").
!endblock

Further details about these are given below.

!block topics
Topic
in_ovpar
in_ovphr
in_ovmac
in_ovvar
in_ovflt
in_ovatt
in_ovexp
!endblock