{HEAD ~ Sensors} control {TAIL ~ the operation} of the jogger assembly responsive to the presence of a stack to be jogged and responsive to the movement of the jogging assembly to a given position displaced from the nominal operating position 
control
{ HEAD ~ Sensors } control { TAIL ~ the operation } of the jogger assembly responsive to the presence of a stack to be jogged and responsive to the movement of the jogging assembly to a given position displaced from the nominal operating position
HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH