This Interaction Overview Diagram Example depicts an interaction model at a high level of abstraction. It is an Activity Diagram variant in which the nodes represent interactions or interaction occurrences. The Interaction Overview Diagram focuses on the flow of control of interactions and can also show the flow of activity between diagrams. In other words, you can connect the simple diagrams within an Interaction Overview Diagram to achieve a high degree of navigability. The Unified Modeling Language (UML) Interaction Overview Diagram is one of fourteen diagrams that can depict a control flow with nodes containing interaction diagrams that show how a set of fragments might be initiated in various scenarios.