60%
Provided by the ASK Keyboard Dictionary
"60%" describes a small form-factor keyboard that omits dedicated numeric keypad, arrow keys, function keys and navigation keys. Such keyboards are the smallest available that do not compromise on keys within the alphanumeric section but often rely on function layers to reintroduce the functionality from the aforementioned keys. The Model F-based IBM 4704 Model 200 Alphameric Keyboard is an example of an early 60% keyboard design. The Anne Pro and Anne Pro 2, GK61, various HHKBs, Vortex POK3R and Wooting 60HE+ are examples of more recent 60% designs.
