A table walked out without paying. What do I do on the POS?

A table with food on it cannot simply be closed, because cooked food should never vanish from the day's numbers. A manager opens the table and cancels the sale with a reason, and it is recorded as a cancellation against their name. It then shows on the Z report and under Reports → Shifts and the POS as cancelled after printing. An empty table opened by mistake is different: Close this table makes it go away with nothing recorded. The Tables, tabs and the kitchen screen tab in the docs covers cancelling a table.