* A value in an ·ordered· ·value space· is facet-valid with respect to ·maxExclusive·, determined as follows:
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* - 1 if the ·numeric· property in {fundamental facets} is true, then the value ·must· be numerically less than {value};
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* - 2 if the ·numeric· property in {fundamental facets} is false (i.e., {base type definition} is one of the date and time related datatypes), then the value ·must· be chronologically less than {value};