Patent ID: 6980961

Claim:
A computer-readable program medium performing a method in conjunction with a POS registering system, the POS registering system comprising a display device, and a menu having a plurality of menu keys and at least one selection key, at least one sales item being assigned to each of the menu keys, each of the selection keys being used to select one of the sales items assigned to each of the menu keys, the computer-readable program medium including a plurality of computer executable instructions stored on the medium, wherein the instructions, when executed by a computer, cause the computer to perform the steps of: when a first operation including selecting a menu key and a selection key is performed for designating a sales item on the menu, retrieving entries of sales item data of all sales items assigned to the selected menu key from a table, wherein the table contains entries of sales item data of the sales items assigned to each of the menu keys and the sales item data include a name and price of each sales item, and causing to be displayed on the display device all the retrieved entries of sales item data in such a manner that the entry of sales item data of the designated sales item is distinguished from entries of sales item data of correction alternative sales items, the correction alternative sales items being sales items which are assigned to the selected menu key other than the designated sales item; and when a second operation is performed for selecting one of the entries of sales item data of the correction alternative sales items displayed on the display device, treating the selected entry as an entry to be processed.