IBM PC 300GL Types 6275, Информационное руководство

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Special Computer Keys
The keyboard has several other keys that are not on a typewriter. These are Escape (Esc),
Control (Ctrl), Alternate (Alt), Insert (Ins), Delete (Del), Print Screen, Scroll Lock, and
Pause/Break.
Caps
Lock Caps
Lock Scroll
Lock Scroll
Lock
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Special Computer Keys
Figure 4.
Your software controls these keys. It can disable them or modify their purpose. The
following list describes the most common uses of these keys.
Esc
Escapes from an operation, window, message, or program and returns
you to what you were doing previously.
Ctrl and Alt
Used with other keys to perform a specific operation defined by the
program in use. When two or more keys are used together to
perform a certain function, they are called combination keys. To use
combination keys, you simply hold them down at the same time. For
example, pressing Ctrl
+
Pause/Break stops the operation of most
programs.
Combination keys might work differently, depending on your
software.
Insert Activates the insert mode, which allows you to insert information
between two existing characters. When you press insert again, you
return to the replace mode and write information over existing
characters.
Delete Deletes a character or field.
Print Screen Prints information on your screen to a printer. If the screen contains
graphic images, they might not be printed correctly.
Scroll Lock Determines how you move through information. When you press the
Scroll Lock key, a light turns on at the top right corner of the
keyboard. With scroll locking on, the cursor can move through the
information on the screen. With scroll locking off, the cursor remains
stationary, and the information on the screen moves. Not many
programs use this function.
Pause/Break Allows you to stop a program temporarily.
24 I/O Features