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DocBook: The Definitive Guide 0.0.25 for DocBook V5.0 (Alpha) |
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DocBook: The Definitive Guide 0.0.25 for DocBook V5.0 (Alpha) |
constraint — A constraint in an EBNF production
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).
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constraintdef |