Use Case Extension Points

Use extension points to specify the point of an extended Use Case where an extending Use Case's behavior should be inserted. The specification text can be informal or precise to define the location of the extension point.

EXPoint

How to:

To work with extension points, follow the steps below:

Step

Action

1

Right-click on the Use Case element

The context menu displays

2

Select the Advanced | Edit Extension Points... menu option

The Use Case Extension Points dialog displays, listing defined points for that Use Case

3

Select an extension point in the list and click on the appropriate button to edit or remove the extension point, or to add a new one

Notes:

  • Conditions to apply the extending Use Case, and the extension point to use, should be attached as a note to the extend relationship

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