Horizontal and vertical cursor control keys should be provided for text processing applications.
Additional Information:
Ideally, keys for cursor control should allow (1) horizontal and vertical movement, (2) movement along the diagonals, and (3) two or more rates of movement that are user selectable. Cursor keys should be dedicated to cursor movement; that is, they should not be used for any function but cursor control. If, however, the cursor keys are not dedicated (i.e., they have collateral functions) their functional status should be clearly indicated.