UML Modeling Techniques > Object interaction modeling > Sequence diagram > Timing constraints > Showing and hiding timing constraints on a sequence diagram
  
Showing and hiding timing constraints on a sequence diagram
1. On the Sequence Diagram, right-click in free space, and then click View Options.
2. Click the Diagram entry.
3. Select or clear the Show Timing Information check box.
In addition to Timing Constraints, Duration and Latency properties of messages are also shown and hidden..