With continuing reference to FIG 3 in combination with FIG 4, {TAIL ~ operation} of {HEAD ~ control path} 18 and control signal 47 is described 
With continuing reference to FIG 3 in combination with FIG 4 , { TAIL ~ operation } of { HEAD ~ control path } 18 and control signal 47 is described
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH