This stable version of the Guideline Wiki Page displays the guideline as per the i* Style of the University of Toronto. Registered users can use 'Open Version' link right at the end of the guideline statement below to access the open version of this page
Guideline (Beginner,Concept) Do not include an Actor within another Actor. Open Version
Discussion: Actors are active and autonomous entities that should be modeled separately. "Sub-system" in the illustration can be modeled as actors that have Dependency Links with the main system and/or other actors. They can also be modeled with Association Links such as "is-part-of" and "ISA", to the higher-level system.
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