Special

key functions

(continued)

 

 

 

 

 

 

Key

 

 

Purpose

 

Num

Lock

 

Changes the function of the numeric/cursor

 

 

 

 

keys from entering numbers to positioning the

 

 

 

 

cursor; changes back when pressed again.

 

 

 

 

 

 

Esc

 

 

Cancels the current command line or

 

 

 

 

operation.

 

 

 

 

 

F1-F12

 

Perform special functions within application

 

 

 

 

programs.

 

 

 

 

 

 

Print

Screen

 

Prints the screen display on a printer.

 

 

 

 

 

SYS Rq

 

Generates the System Request function in some

 

 

 

 

application programs (used with Alt).

 

 

 

 

 

 

I Scroll

Lock

 

Controls scrolling in some applications.

I

Pause

 

Suspends the current operation.

 

 

 

 

 

Break

 

Terminates the current operation (when used

 

 

 

 

with Ctrl).

 

 

 

 

 

 

The Caps Lock, Num Lock, and Scroll Lock keys work as toggles; press the key once to turn on a function and again to turn it off. When the function is enabled, the corresponding light in the upper right corner of the keyboard is on.

Stopping a Command of Program

You may sometimes need to stop a command or program while it is running. Many programs provide a command you can use to cancel or even undo an operation. If you have entered an MS-DOS command that you want to stop, try one of the following commands:

0 Hold down the Ctrl key and press C

Cl Hold down the Ctrl key and press Break,

Using Your Computer 3-3