ANSI layout
Provided by the ASK Keyboard Dictionary
The "ANSI" physical layout is one of the two main keyboard layouts introduced by the Enhanced layout alongside the ISO layout that together remain the base of most keyboard layouts. It is named after the American National Standards Institute and was primarily intended for the United States of America but is also used for generic English keyboards in The Netherlands and many East Asian countries. It may also be used for Arabic and Cyrillic language keyboards. Compared to ISO, ANSI physical layout has a larger (2.25-unit) left shift key and a horizontally massive (2.25-unit long) enter key.