The person preparing a check positions the check in the check writer so its print-heads are centered over the field on the check where the amount of the check would otherwise be written out in words. Using a series of levers or buttons on the checkwriter's control panel, the operator enters the monetary amount of the check. This amount is then printed onto the check by the operator pulling a lever on the side of the unit (or by pressing a button on electric units). This brings the print-heads down upon a wide inked (usually multicolor) ribbon through which they print the selected amount on the check, with a prefix and suffix to prevent a fraudster from adding extra digits. Entering $6,762.64, for example, will produce text reading "TheSum6762dol's64cts".