A computer program is given which will generate a list of descriptions of the items to which a student has responded incorrectly on the Keymath Diagnostic Arithmetic Test. It is designed for the TRS-80, Model III, with two disk drives. The documentation lists all required materials, describes the six options and how to use them, indicates the procedures for getting started and using the program, and briefly presents sample output. The program description listing is provided in paper form; however, the "Error Descriptions for Math Test" diskette must be obtained to diagnose errors. (MNS)