One embodiment in accordance with the invention is a method that can include utilizing a ring oscillator module to determine a process corner of an integrated circuit as fabricated that includes the ring oscillator module. A value of a characteristic of a commute by the commuter along a route from a first location to a second location is determined. A front channel mouth is bridged-over by a bridge on which a plurality of cutting edges are formed, which edges are made integrally with the rest of the bridge. An upper portion has at least two output connectors each joined to a one of the output tubes.