Command key keyboard of the NeXT Computer that key was marked in green. The menus were not marked with a symbol denoting the command key. Besides being used as a modifier key for keyboard shortcuts it was also used to alter the function of some keys. toggles alpha lock, sends Enter and toggles Mute. The functions were printed in green on the front side of the modified keys. This was also done on the Z, X, C and V keys (Undo, Cut, Copy and Paste). On the NeXT ADB keyboard, the Command keys were replaced by keys labeled and the Command key
QWERTY international standard ISO/IEC 9995-2, although this is not explicitly required by the US American national standard. US keyboards are used not only in the United States, but also in many other English-speaking places, including India, Australia, English Canada, Hong Kong, New Zealand, South Africa, Malaysia, Singapore and Philippines. However, the United Kingdom and Ireland use a slightly different layout because of the Irish language. The US keyboard layout has a second Alt key instead of the AltGr key and does not use any dead keys; this makes it inefficient for all but a handful of languages. On the other hand,