As shown in FIG 2, the screen 14 contains {HEAD ~ areas} 34 which are slower draining than the main body of {TAIL ~ the screen} 
As shown in FIG 2 , the screen 14 contains { HEAD ~ areas } 34 which are slower draining than the main body of { TAIL ~ the screen }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL