The Keytop Enlargers, models 223-312-0149 and 223-312-0166, are large print keytop overlay sets designed to make computer keyboards accessible to individuals who have low vision. The kit includes labels for the full 101- key layout marked with bold print. The letter markings are provided in 38-point print, the numbers are enlarged to 32-point print, and the symbols (e.g., @, ##, $, etc.) are enlarged to 18-point print. COMPATIBILITY: For use on IBM PC and XT and compatible keyboards and Apple keyboards. COLOR: Available in a choice of black letters on a white background (223-312-0149) or off-white letters on a black background (223-312-0166).