4.2.2 Incrementing Extra Charges
Pressing the Extra Button will increment a
single extra charge. In this case, the Extra
charge has been pre-set to $2.22.
Repeatedly pressing the Extra Button will
increment the Extra Charge, up to a pre-
set maximum (this is described in
Configuration Mode).
In this example, the Maximum Allowable
Extra Charges is set to $8.88.
If the maximum allowed Extras would
otherwise be exceeded by additional
accumulations, the Extra Charges will
return to $0.00 (this is handy if you
accidentally increment the Extras beyond
what you intended).