Any of {HEAD ~ the operational relationships} updated at Step: 132 may be employed by the controller 28 in {TAIL ~ future retarding gear determinations} 
Any of { HEAD ~ the operational relationships } updated at Step : 132 may be employed by the controller 28 in { TAIL ~ future retarding gear determinations }
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL