Model Parts, Diagrams, Dictionary Items, and Properties > Properties > Anonymous (property)
  
Anonymous (property)
For automation interface purposes, the Anonymous property is an attribute of the Part instance or Port instance symbol.
This property specifies that a Part or Port instance represents a generic instance and you do not want to name it.
By default, new instances are not Anonymous.
On a Sequence Diagram, the Anonymous property prevents the instance name from being shown.
This property is set on the Options tab of a Part or Port instance's Property Pages. Alternatively, you can right-click an instance, and then select or clear the Anonymous Instance command. To view an instance's Property Pages, on the diagram, right-click the item, and then click Instance Properties.
The following section provides information about the items and diagrams for which Anonymous is a property. For more information about an item or diagram, click it.
Is property of
Attribute (as Part or Port)
Role (as Part or Port)