During some period of the programming cycle {HEAD ~ the cross point switch routes data} from {TAIL ~ the data pad} to the column latch through the selected column 
from
During some period of the programming cycle { HEAD ~ the cross point switch routes data } from { TAIL ~ the data pad } to the column latch through the selected column
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH