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