Every primary model element is uniquely identified by a path in the following form:
<ns1>::<ns2>::...<nsn>::<name>
In this syntax, ns can be either a package or a class. Primary model elements are packages, classes, types, and diagrams. Classes can contain only other classes, stereotyped classes (such as actors), and types.
You can select a nested element in a window by entering its name in either of the following formats: