The connection box 46 recognizes the type of event and match {HEAD ~ the clock time}, coming from {TAIL ~ the processing unit} 48, to these events 
The connection box 46 recognizes the type of event and match { HEAD ~ the clock time } , coming from { TAIL ~ the processing unit } 48 , to these events
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH