One embodiment provides a circuit arrangement integrated in a semiconductor body. The performance of the ECL shows a substantial reduction in distortion occurring over certain narrow ranges of operating temperatures. By converting the block level file commands into instructions suitable for the node based snapshot system, snapshots are able to be taken at the block level, which allows for disk storage savings and speed enhancements. In one embodiment, the gradient interface area is formed of lateral spatial gradient structures for narrowing the cross section of a value from the micron to the nanometer length scale. Thus, the performer can correctly lower or raise the gamut via the octave-key transfer-bar. With an incorrect fit, a pinched guidewire would restrict the desired movements of both the guidewire and the catheter.