Optional_Optional_< | <= | >= | > - how to understand the value
Optional_System that defines coded unit form
Optional_Unit representation
Optional_Numerical value (with implicit precision)
OptionalcodeCoded form of the unit
Optionalcomparator< | <= | >= | > - how to understand the value
OptionalextensionAdditional content defined by implementations
OptionalidUnique id for inter-element referencing
OptionalsystemSystem that defines coded unit form
OptionalunitUnit representation
OptionalvalueNumerical value (with implicit precision)
Coded form of the unit