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