Sharp UP-3300 - Manual (Page 80)

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■ Discount entries
Your POS terminal allows you to deduct a certain amount less than a programmed upper limit after the entry
of an item or the computation of a subtotal.
Discount for a subtotal
Example
Key Operation Display
000006
80 PLU
SUB TOTAL
100 (–)2
CASH/TL
Discount for item entries
Example
Key Operation Display
7 PLU
75 (–)1
CASH/TL