In a reference machining pass, the wire travels along a machining route RTn and passes through a reentrant angular corner with wire position WMn, producing a workpiece edge Hn. The present invention uses a diamagnetic material to provide flux focusing in a storage device. A slider arm for engaging a high-lift cam lobe is disposed in the aperture, is pivotably mounted to the body, and includes a slider tip for engaging a latch pin having a nose section. The frequency domain processor operates to digitally process the multi-bit sample streams, using the compensation vectors, to generate multi-bit estimates of symbols modulated onto each transmitted polarization of the optical signal. The optical output selection device defines a second optical path running between a second input end and a second output end.