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