4.1.3 Position
Intermediate abstraction that can be used between a role and an agent. It is a set of roles typically played by one agent (e.g., assigned jointly to that one agent). We say that an agent occupies a position. A position is said to cover a role. A position is abstract and an amalgamation of roles. A position can be ascribed to a human or non-human, even though the later case is rare.
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