Model Parts, Diagrams, Dictionary Items, and Properties > Properties > Optional (property)
  
Optional (property)
For automation interface information about the Optional property (Is Optional through the automation interface), see the automation interface topic for a Dependency in the Related Topics.
This property specifies whether a linked Variant can or must be included:
An optional Variability Dependency specifies that a Variant can be included for a Variation Point.
A mandatory Variability Dependency specifies that a Variant must be included when the Variation Point is included.
By default, the Optional check box is selected.
This property is set on the Options tab of a Dependency's Property Pages.
This property is available only when the Dependency Type is Variability.
The following section provides information about the items and diagrams for which Optional is a property. For more information about an item or diagram, click it.
Is property of
Dependency