Referencing to internal and external resources

1. Move the mouse on Create Article use case, press its resource icon References and select Add File... from the pop-up menu
2. In Use Case Specification dialog box, click the ... button to select a file under References tab
3. Click the Add shape button and select Support Words count from the pop-up Select Shape dialog box
4. Click resource icon References and select the file inserted previously to open it
5. Click resource icon REferences and select the shape inserted previously to switch to it

Knowing if an element contains sub-diagram/reference

1. Right click on the diagram background and select Presentation Options > Always Show Reference and Sub Diagram Resource from the pop-up menu