Actions can be further defined with pre-condition and post-condition notes, which constrain an Action's entry and exit. These notes can be added to an Action as defined below.
See UML Superstructure Specification, v2.0, figure 200, p. 283.
Create a Constraint
To attach a constraint to an Action follow the steps below:
|1.||Right-click on the action. The context menu displays:|
|2.||Select the menu option. A Note is created on the diagram, linked to the action.|
|3.||Right-click on the Note. The context menu displays.|
|4.||Select the menu option. The Constraint dialog displays.|
|5.||In the field, click on the drop-down arrow and select the required constraint type.|
|6.||In the field, type the text for the constraint. |
|7.||Click on the button to save the constraint.|