The invention is directed towards methods and apparatus for defining Manhattan power grid structures having {TAIL ~ a reduced number} of {HEAD ~ vias} for use in an integrated circuit 
The invention is directed towards methods and apparatus for defining Manhattan power grid structures having { TAIL ~ a reduced number } of { HEAD ~ vias } for use in an integrated circuit
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH