constraintdef — The definition of a constraint in an EBNF production.


constraintdef ::= [-]

Additional Constraints

  • If this element is the root element, it must have a version attribute.


A constraintdef contains a description of a constraint that cannot be expressed in the grammar (generally logical rather than syntactic constraints).

Processing expectations

Formatted as a displayed block.

Last revised by Norman Walsh on (git hash: 8efbb30ec1f2a59299576c057927c2032216aea4 f2da477a142b88c50ef9ceb6f54ce6b54fca5836)