| The cross referencing process utilizes a data matrix. Each Trigger points to a list of Act/Trigger Definitions (ATDef), which in turn point to the Action the Trigger is a member of. The ATDefs maintain a information about the relationship of the Triggers to the Actions, such whether a Trigger must be within a specified distance from the start of the Stream to be valid, or if detecting the Trigger indicates that the Action is to be discarded. |