A CandSlice consists of a list of CandStrip objects corresponding to
one physics event. In the far detector, the raw data record (snarl)
and CandSlice contain the same digitizations. In the near detector, a
fast clustering algorithm, based primarily on time, is used to
separate snarls into separate CandSlices. It should be noted that the
same CandStrip may belong to more than one CandSlice.