Indicate a system boundary in a use case diagram

  1. In a use case diagram, drag a System Boundary shape onto the drawing page.

  2. Double-click the shape, and then type a new name for the system or press the DELETE key to delete the existing name. Click outside the shape on the drawing page.

  3. To resize the system boundary, select the shape, and then drag a selection handle.

  4. Drag Use Case shapes from Use Case and place them inside the system boundary, and then drag Actor shapes to the outside of the system boundary.

  5. Use Communicates shapes to indicate relationships between actors and use cases, and Extends and Uses shapes to indicate relationships between use cases.

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