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For rules around action order, see Initiative.

Initiation is the step in a resolution that ascertains whether a character can begin (initiate, start or attempt) an action that they intend to perform. In the IIEE model of resolution, it follows intent (i.e. it is established that the character wants to do something before determining whether they make the attempt) and precedes execution (i.e. their success or failure can't be determined until it is known that the character has started to act).

If an action's resolution is stopped at the stage of initiation, then the character witholds acting entirely and other characters might not even be aware of their intentions.

Many role-playing game assume that initiation of an action is automatic except when a character is afflicted by certain conditions (e.g. paralysis conditions may prevent a character from initiating a movement).