The present invention concerns a method and apparatus for controlling {HEAD ~ production run sequences} of {TAIL ~ insulating glass units} 
of
The present invention concerns a method and apparatus for controlling { HEAD ~ production run sequences } of { TAIL ~ insulating glass units }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL