{TAIL ~ This locus} may be, in {HEAD ~ various embodiments herein}, a single pixel, a row of pixels, or a number of rows of pixels of frame buffer memory 
{ TAIL ~ This locus } may be , in { HEAD ~ various embodiments herein } , a single pixel , a row of pixels , or a number of rows of pixels of frame buffer memory
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH