You can set the default for classifiers to show operation
signatures when you create new class diagrams or add classifiers to
existing ones.
Note: This default setting affects
only classifiers that you add to a diagram and do not affect existing
classifiers in a diagram.
To set the default for showing operation signatures:
- Click .
- In the Preferences window, expand Modeling,
expand Appearance, and click Shapes.
- On the Shapes page, select Show
signatures and click OK.