Example Hierarchical Graph (Calls) of C function Main:

This tree has been manually expanded and contracted to just show what is desired.

Example Hierarchical Graph (Expanded Data Members) of a C++ Class:

This graph shows all the data fields in the main and children class or sub-types.

Example Hierarchical Graph (With Hiearchy) of an Ada Package:
Note that layout has been altered and full names are shown
(this is configurable).