For most pixels, in addition to the reduction of the values of the component colors of the pixel , {HEAD ~ the alpha value} of {TAIL ~ the pixel} will be reduced  
of
For most pixels , in addition to the reduction of the values of the component colors of the pixel , { HEAD ~ the alpha value } of { TAIL ~ the pixel } will be reduced
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH