Casio TE8000 Operating Instructions Manual page 5

C. ERRORS AND REFUNDS
MAKING CORRECTIONS TO A TRANSACTION:
1. To clear the last transaction (before the subtotal key is entered), press
the ERROR CORR. key.
2. To clear earlier transactions, use the arrow keys to highlight the
transaction you wish to delete, then press the ERROR CORR key.
3. Once the subtotal key is pressed, press CANCEL and then YES to
cancel entire transaction
4. To clear the screen at any time enter the C key – note that this will not
remove any transactions that have been entered.
REFUNDS:
1. Press the RF key then the key for the corresponding item that is being
refunded
2. Press SUBTOTAL to give the total amount due/owned.