The method creates {TAIL ~ a sequence} of runs of insulating glass units to be produced for assembly to window or door sash and frames at {HEAD ~ a plurality} of glazing lines 
The method creates { TAIL ~ a sequence } of runs of insulating glass units to be produced for assembly to window or door sash and frames at { HEAD ~ a plurality } of glazing lines
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH