Toshiba A200 Temporarily using normal keyboard (overlay on), Temporarily using overlay (overlay off)

Satellite A200/Satellite Pro A200 5-5
The Keyboard
The numeric keypad overlay (U.S.)
Temporarily using normal keyboard (overlay on)
While using the overlay, you can temporarily access the normal keyboard
without turning off the overlay:
1. Hold down Fn and press any other key. All keys will operate as if the
overlay were off.
2. Type upper-case characters by holding down Fn + Shift and pressing
a character key.
3. Release Fn to continue using the overlay.
Temporarily using overlay (overlay off)
While using the normal keyboard, you can temporarily use the keypad
overlay without turning it on:
1. Press and hold down Fn.
2. Check the keyboard indicators. Pressing Fn turns on the most recently
used overlay. If the Numeric mode indicator lights, you can use the
overlay for numeric entry. If the Arrow mode indicator lights, you can
use it for cursor and page control.
3. Release Fn to return to normal keyboard operation.