Context
You can open the ABAP Type Hierarchy view to display the inheritance tree of a selected ABAP class or interface.
Note In contrast to the corresponding quick view (Ctrl +
T), you can look at the ABAP type hierarchy for a
selected class or interface independently from the current editor content. The
hierarchy of a class or interface is still displayed in the ABAP Type
Hierarchy view even if the source editor has been closed, in the
meantime.