5. the coupon is used in case the payment is merchant coupons instead of cash.6. other use cases where other forms of payment that are not in the system, you must specify the name of the settlement.7. a property, OC is a type of payment that did not amount to a real system, but the amount of the restaurant set up, for each customer, the customer itself. Who can determine the number of credits to a customer at the front of the customer, which is described in the next chapter. 5.) if there is a change, the program will display the amount of change. When the change is complete, press OK. The program will print out the receipt, the customer is to finish the payment procedures as 2.27.
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