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Version: DocBook V4.5

nonterminal

nonterminal — A non-terminal in an EBNF production

Synopsis

Mixed Content Model

nonterminal ::=
(#PCDATA)

Attributes

Common attributes

Name

Type

Default

def

CDATA

Required

Attributes

def

[EBNF]The def attribute contains a URI reference that points to a production where the nonterminal is defined.

Note that this is not an IDREF, it is a URI reference (as, for example, are href attributes on HTML a elements). This is necessary because references to non-terminals might need to cross document boundaries.