I always go with the tipline since it's the figure that clearly shows the
customer's intent--there's no math involved when they write the tip. A drunk
customer's math will just as often result in an error in the bartender's
favor. You wouldn't reap the rewards of bad math, would you?
In fact, now that I think about it, I never even look at the total line, as
our system is set-up where you enter only the tip total.
myers