{TAIL ~ The memory package} may also include a memory die having {HEAD ~ an optical input/output section} and a second optical window 
{ TAIL ~ The memory package } may also include a memory die having { HEAD ~ an optical input / output section } and a second optical window
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH