UP-5300 (serv.man6). Frequently asked questions (Aug 2002) - Sharp EPOS FAQ (repair manual). Page 41

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I’m using Comidea
Winti,  but the
customer now wants
to take Cashback.
First of all you need to inform
Comidea that this site is using the
CashBack facility so the Banks can
be set up.
Create a new Payment type called
Debit card or Switch change the EFT
line from YES to CBK by pressing
the space bar.
Set the line EFTCASHBACK=n,m
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