7. The computer-implemented method of claim 4 wherein the membership rule set pertaining to the structured collection procedure of the first type includes a first rule that prohibits entry of more than one collection event which is unpaired with another collection event; a second rule that prohibits pairs of collection events from overlapping in time with each other; a third rule that prohibits pairs of collection events from being nested within each other; and a fourth rule that prohibits entry of a given collection event which occurs in time before another pair of collection events.
4. The computer-implemented method of claim 1 wherein a structured collection procedure of a first type specifies a pair of collection events that fall within a window of time which encapsulate a given event, where a first collection event in the pair of collection events occurs before the given event and a second collection event in the pair of collection events occurs after the given event.