The host workstation keeps track of activity occurring on {HEAD ~ the individual workstations} within {TAIL ~ the workgroup} 
within
The host workstation keeps track of activity occurring on { HEAD ~ the individual workstations } within { TAIL ~ the workgroup }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL