TEC FS-3600 Owner's Manual page 20

Sample FS-3600 Screens
When a check is ready to be tendered, a screen with cashier
functions can be used.
NOTE the {ENTER} key – this is actually the TOTAL key which
is also used to finalize a numeric entry. In this example, it has
been renamed to represent its function on the screen.
Sample - Cashier/Pay Screen
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Chapter 1 - FS-3600 Overview
FS-3600 Owner's Manual