A high speed program tracer providing compression using linear increment run length values, displacement values corresponding to discontinuities, and loop compression. The main advantages of the environmentally-friendly shoe bottom are that it uses the agriculturally waste cornstalk, wheat stalk, rice straw, and rice bran to replace calcium carbonate and zinc stearate included in the traditional sole material TPR and retains the physical properties of the traditional TPR. Selected subsets are removed from the corresponding codewords, leaving behind shortened codewords, and are many-to-one transformed to condensed bits. The contact assembly includes a plurality of contacts disposed to contact a peripheral edge of the surface of the workpiece to provide electroplating power to the surface of the workpiece.