This page of the Properties browser displays information about the supertype of the type, the type manager, and the default time stamp for versions of elements based on this type.
Included in Rational ClearCase is a set of predefined types, which are collectively called supertypes. Each type object must be based on a supertype. A type manager is used to determine how to store and retrieve elements based on a specified type.
You cannot change the supertype or the type manager if any elements of this type have been created.