Why would you want to "zero out" item totals, or anything else for that matter, unless you don't want point-of-sale recording? One of the primary purposes of data capture is to *purposely* record that sort of thing. Ditto on Bospruell's comment re: "X" vs. "Z"... if you don't want a trail, get rid of it -- especially if it's Micros. It's legacy tech, and epitomizes the planned obsolescence that gives POS a bad name now that better stuff is available, etc.