It is understood that such operational relationships may also include {HEAD ~ any} of {TAIL ~ the stored historical data} described herein 
of
It is understood that such operational relationships may also include { HEAD ~ any } of { TAIL ~ the stored historical data } described herein
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH