{TAIL ~ The second metal layer} is deposited over {HEAD ~ the spacer} to complete the connection between the first and second metal layers 
{ TAIL ~ The second metal layer } is deposited over { HEAD ~ the spacer } to complete the connection between the first and second metal layers
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH