Storage locations and {HEAD ~ sub trees} may be assigned to tracking {TAIL ~ cells} in a distributed system architecture 
Storage locations and { HEAD ~ sub trees } may be assigned to tracking { TAIL ~ cells } in a distributed system architecture
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH