Definition from ISO/CD 10303-41:1992: A context dependent unit is a unit which is not related to the SI system.
NOTE The number of parts in an assembly is a physical quantity measured in units that
may be called "parts" but which cannot be related to an SI unit.
NOTE Corresponding STEP name: context_dependent_unit, please refer to ISO/IS 10303-41:1994
for the final definition of the formal standard.
HISTORY New entity in IFC Release 1.5.1.
|| The word, or group of words, by which the context dependent unit is referred to.