#160 - Key Mapping. Revised by Jim Luther, Peter Edberg, & Imran Sayeed February 1991. Written by Cameron Birse September 1987. This Technical Note describes the Macintosh family key code mapping scheme when running System file 4.1 and later. This Note also provides a “safe” method for remapping keyboards. Changes since October 1990 - Added a section on how 'KMAP' resources are matched to specific ADB keyboard types and a section on the original Macintosh and Macintosh Plus keyboards.