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Concept: Portal-Covering

System documentation


Superconcept: Barrier

Definition: Portal-Covering is the Role played by an Entity which is the instrument of a Be-Closed state. (A Portal is put into the Be-Closed state by Close and taken out of this state by Open.)

Required Relationships:

played-by: the entity that's playing the role of portal-covering
in-event: the Be-Closed state for which the portal-covering is the instrument

Other Common Relationships:

Examples:

  1. The lid closes the jar.
    Comment: In this example, the Portal-Covering role is described with these properties:
    in-event: Be-Closed with object=jar
    played-by: the lid