Trigger phase of an InputAction.
public enum InputActionPhase
Actions can be triggered in steps. For example, a SlowTapInteraction will put an action into Started phase when a button the action is bound to is pressed. At that point, however, the action still has to wait for the expiration of a timer in order to make it a 'slow tap'. If the button is release before the timer expires, the action will be Canceled whereas if the button is held long enough, the action will be Performed.
The action is not enabled.
The action is enabled and waiting for input on its associated controls.
An associated control has been actuated such that it may lead to the action being triggered.