Redefined attributes

Supertype attributes redefined in a subtype

If a subtype entity redefines an attribute of its supertype using the DERIVE clause, that attribute in the supertype shall be encoded with an asterisk “*”.

Sample entity instance
/* Length Unit (mm) */
#1020 = SI_UNIT (*, .MILLI., .METRE.));
#1021 = (LENGTH_UNIT() NAMED_UNIT(*) SI_UNIT(.MILLI., .METRE.));

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