{TAIL ~ A status} of {HEAD ~ the runs}, a status of one or more insulating glass component processing machines, and a queue of insulating glass units to be assembled to window or door sash and frames at the glazing lines is monitored at a production control workstation 
{ TAIL ~ A status } of { HEAD ~ the runs } , a status of one or more insulating glass component processing machines , and a queue of insulating glass units to be assembled to window or door sash and frames at the glazing lines is monitored at a production control workstation
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH