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Key
Purpose
Alt
Backspace
Enter
Caps Lock
Esc
Num Lock
Scroll Lock
Break
Sys Req
PrtSc
Home, End,
PgUp, PgDn,
Ins
Del
Works with other keys to enter alternate character
codes or functions.
Moves the cursor back one space, deleting the
character to the left of the cursor.
Ends a line of keyboard input or executes a
command (may be called the Return key in some
application program manuals).
Changes the letter keys from lower- to uppercase;
changes back to lowercase when pressed again.
The numeric/symbol keys on the top row of the
keyboard are not affected.
Cancels the current command line or operation in
MS-DOS. Esc can also have special uses in
application programs.
Changes the function of the keys on the numeric/
cursor keypad from numeric entry to cursor
positioning; changes back when pressed again.
Controls scrolling in some application programs.
When pressed with the Ctrl key (hold down Ctrl
and press Break), sends a break signal to the
computer to terminate the current operation.
Produces the system request function in certain
applications.
Prints the screen display on a dot-matrix printer.
Control cursor location in some applications, such
as word processors, game programs, and
spreadsheets.
Turns the insert function on and off in some
application programs.
Deletes the character at the cursor position.
Using Your Computer
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