$Revision: 1.3 $
$Date: 2002/06/12 11:18:07 $
constraint — A constraint in an EBNF production
constraint ::= EMPTY
This element is only available if you are using the EBNF Module.
A Constraint is a cross-reference to a description of a constraint that cannot be expressed in the grammar (generally logical rather than syntactic constraints).
These elements contain constraint: production.
For examples, see productionset.