{HEAD ~ The supporting apparatus} is preferably a conductive column that is not removed when the recessed is formed in {TAIL ~ the dielectric layer} 
{ HEAD ~ The supporting apparatus } is preferably a conductive column that is not removed when the recessed is formed in { TAIL ~ the dielectric layer }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL