If referenced explicitly, a condition-name must be unique or be made unique by means of qualification and/or subscripting. This is not necessary if the uniqueness of the reference is guaranteed by the naming conventions for the scope themselves.
If qualification is used in order to render a condition-name unique, the associated conditional variable can be used as the first qualifier. Also, in the case of qualification, the hierarchy of names that are assigned to the conditional variable must be used in order to render a condition-name unique.
If the reference to a conditional variable necessitates subscripting, the same combination of subscripts is required when referencing one of its condition-names.
With regard to the qualification and subscripting of condition-names, the same format and restrictions are applicable as for the identifiers except that data-name-1 is replaced by condition-name-1.
In the general format in the following sections, "condition-name-n" always refers to a condition-name that, depending on the requirements, is qualified or subscripted.