These utilities were sent in to 3-Lib by the author, Colin Sansam

They represent;

CSA2DIA - Converts cross-sectional area to a diameter
OHM4BAND - Color bands to resistance for 4 band resistor
OHM5BAND - Color bands to resistance for 5 band resistor
STRANDS - wiring sizes/ nos of strands etc
ZORT - Database sorting utility

Basic, but useable.