The
Tab key
functions in the same way as on a typewriter, advancing the cursor to the next tab
position. Pressing the Tab key in conjunction with the Shift key will tab to the left.
The Backspace Key
In MS-DOS and in most software, the
Backspace key
moves the cursor one space to the left,
simultaneously deleting the character to the left of the cursor. The function of the backspace key
may be different in some software.
The Delete Key
In MS-DOS and in most software, the
Delete key
is used to delete the character at the current
cursor position. The function of the Delete key may vary according to the software being
used.[SX/DX 4-3]
The Enter Key
When typing in data, the
Enter key
functions in the same way as the carriage return key on a
typewriter. It advances the cursor one line and returns the cursor to the left hand side of the screen.
In MS-DOS and most other software packages the Enter key must be pressed to execute a
command.
The Control (Ctrl) Key
The
Ctrl key
is always used in combination with one or more other keys to perform some special
function. Its use will vary from program to program. Please also see the section on Special Key
Combinations in this chapter.
The Alternate (Alt) Key
The
Alt key
is always used in combination within or more other keys to perform some special
function. Its use will vary from program to program. Please also see the section on Special Key
Combinations in this chapter.
The Escape (Esc) Key
The use of the
Esc key
will vary depending on the program you are using. In MS-DOS, and in
many other software packages, the Esc key is used to cancel a command or exit from a program.
THE FUNCTION KEYS
Fig. 4-2 The Function Keys
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THE TYPEWRITER KEYS SX/DX
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