The Macintosh program   Steel Spur Gears may be downloaded and decompressed ready to run by clicking its name - the browser must be helped by Stuffit Expander or a similar .sit file decompressor.

While every care has been taken to ensure the correctness of the program, it is intended for educational rather than commercial use and no liability is accepted if it is not used as intended.

A description of the program and two dialogues with it follow :