{HEAD ~ Control} may then proceed to Step: 132 where the controller 28 may update one or more of the operational relationships associated with {TAIL ~ the machine} 
{ HEAD ~ Control } may then proceed to Step : 132 where the controller 28 may update one or more of the operational relationships associated with { TAIL ~ the machine }
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 TAIL TAIL TAIL TAIL TAIL TAIL