Example Hierarchical Graph (Calls) of C function Main:
graph_views_c_calls

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

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

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:
graph_views_ada_hiearchy
Note that layout has been altered and full names are shown
(this is configurable).