Apple PowerBook (2400c) - Manual (Page 136)

Special keys on the Macintosh PowerBook 2400c keyboard
Arrow keys Move the insertion point as an alternative to using the pointing device.
In some programs, the arrow keys have other functions.
Caps Lock key A locking Shift key for letters only (numbers and symbols aren’t affected).
An icon appears in the menu bar when caps lock is on.
x (Command) key Works in combination with other keys as an alternative to choosing
a menu command.
Control key In combination with other keys, provides shortcuts or modifies actions.
Delete key Deletes selected material, or the character to the left of the insertion point.
Enter key In a dialog box, pressing Enter is the same as clicking the outlined button.
In some programs, confirms information you have provided.
Escape key The function of this key depends on the program you’re using.
Function keys Some programs allow you to use function keys to give commands. You
can assign commands or actions to function keys with utility programs.
Option key In combination with other keys, produces special characters or
modifies actions.
Power key Turns the computer on and off.
Return key Moves the insertion point to the beginning of the next line. In a dialog box,
pressing Return is the same as clicking the outlined button.
Shift key Produces capital letters (or the upper character on the key).
Tab key Moves the insertion point to the next stopping place (such as a tab stop or
data field).
Option key (Command) key x
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136 Appendix B