Function Keys; Special Key Combination - IBM 5531 Operator's Manual

Introducing the IBM 5531 Industrial Computer
Keyboard
(continued)
Function Keys
The function keys (Fl through FlO) are always under program control. Refer to the manual that
came with your operating system or application program for information on the use of the
function keys.
Special Key Combination
The Alt (Alternate), Ctrl (Control), and Del (Delete) keys can be pressed simultaneously to
perform a system reset. All three keys must be pressed at the same time. Doing a system reset
with these keys is faster than setting the system unit's Power switch to Off and then to On again
when you wish to start over (insert a new program and so on).
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Operator's Guide