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) Be consistent with the direction of the Task Decomposition Link between a Task and sub Task or Resource. Open Version
Discussion: The direction of the Task Decomposition Link should be from the main Task to the sub Task. This type of link is used within Actors to decompose a task into sub Tasks as shown in the illustration or into other elements such as Resources, Goals, and Softgoals. Syntactically, there is nothing wrong with illustration model, but it is semantically wrong and illustrates a poor layout.
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.