4.2.2 ISA Association
The is_a association represents a generalization, with an actor being a specialized case of another actor. Both ISA and Is-part-of can be applied between any two instances of the same type of actor.
Open Version
For questions regarding i* syntax please click on the "discuss" tab. This feature is available for registered users only. For registration information please see the Registration and User Rights Policy for the i* Wiki.