The way {HEAD ~ the present invention} is used to control {TAIL ~ the media position} along the longitudinal direction is best understood with reference to FIG 4 
is used to control
The way { HEAD ~ the present invention } is used to control { TAIL ~ the media position } along the longitudinal direction is best understood with reference to FIG 4
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH