The keyboard portion of a computer has a small toggle switch structure positioned among its keys and reachable by a user while his hands are in the home row typing position. The switch structure is used to selectively switch the computer between typing and cursor control modes. When the computer is switched...http://www.google.co.uk/patents/US5864334?utm_source=gb-gplus-sharePatent US5864334 - Computer keyboard with switchable typing/cursor control modes
