When using Point of Sale, Product Lookup Codes (PLU's) are used as a shortcut to quickly enter sales. PLU's eliminate the need to print a price tag for an item. They also eliminate the need to scan a bar code or enter the item number. Instead just a one or two digit PLU number is entered.
PLU's are especially useful when selling:
There are two ways to post a sale using PLU’s:
Method two:

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Set Posting Date