ISO/IEC 15411:1999

This International Standard defines the differing requirements necessary when considering the various types of segmented keyboards. The scope of this International Standard encompasses the three-dimensional layout of segmented, traditional style keyboards classified as having: a. Adjustable alphanumeric segments; b. Fixed angle alphanumeric segments. This International Standard covers the following keyboard areas: - Alphanumeric area - Function area - Text editing area - Numeric area - Cursor control area