removing the dielectric layer in the area of {TAIL ~ the opening} of the mask to obtain {HEAD ~ the recess} 
removing the dielectric layer in the area of { TAIL ~ the opening } of the mask to obtain { HEAD ~ the recess }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD