This property specifies that each instance of an Attribute's or Role's Class, Data Type, Interface or Signal is ordered (Is Ordered through the automation interface).

By default, the Ordered check box is not selected.

This property is set on the Options tab of an Attribute's or Role's Property Pages.

The following section provides information about the items and diagrams for which Unique is a property. For more information about an item or diagram, click it.