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