Missing type of a Constraint's unit property

[nitmws]

In the IM 2.5.1 Constraint Class its property unit is defined this way:

A Constraint may have none or one unit property value for the unit value of the rightOperand/Reference.

But this definition misses the type of the property values.
I suggest:

• strict variant (as in ODRL 2.1): IRI (to refer to a Concept representing the unit)
• lax variant: IRI or literal value.

AND: I feel the the definition above is not clear; what is a property "for the unit value of the rightOperand/Reference."?
I suggest:
A Constraint may have none or one unit property value (of type ....) to set the unit used for the value of the rightOperand/Reference.

[riannella]

Done

[iherman]

Can this issue be closed?