and as their names imply, are provided to enable you to

interrupt what the computer is doing, although also has a special

significance when using VIEW. should be considered to be a 'polite

request', which normally stops the computer without any side-effects, whereas

is a definite command which stops the computer at all costs.

Depression of alone is sometimes referred to as a soft break because it

has the effect of resetting the computer to the condition it was in at the start of

the current session (BASIC, VIEW etc.). A hard break is achieved by pressing

+; this resets the computer so that it assumes the state in which it

would normally be immediately after switching on.

„„„ has a special significance when using a disc unit and further

details are given in the section entitled The Icon Software, on page B1

The potential side-effects of accidental depression of can be avoided by

turning the break key lock (see illustration) clockwise through 90'' using a

suitable flat-bladed screwdriver. Normal operation is restored by returning the

screwhead to its original position

The numeric keypad

The numeric keypad is provided as a convenient means of entering large

quantities of numeric data -- it contains:

-- the digits 0 -- 9;

-- symbols denoting the four arithmetic operations (* being used for

multiplication, / for division);

-- full stop (decimal point) and comma;

-- separate and keys;

-- the # symbol.

A 7