Interaction Overview diagram
An Interaction Overview diagram is part of a larger scenario and shows the sequence of individual interactions, which are normally modeled using Communication or Sequence diagrams.
These diagrams are Activity diagrams in which only actions of the CallBehaviorAction type are used, which invoke interactions.
Figure 21 shows an Interaction overview diagram, which invokes interactions including the Create order interaction modeled in Figure 18. The individual actions of the CallBehaviorAction type each show the name of the interaction invoked.