Someone just mentioned in another thread the skill of "reading a table". I realized that we all have little signals, some taught by our parents, some we learned. Here are mine--I'd love to know, what are yours?
Closed or face down menu means that we're ready to order.
Persistant eye contact from across the room means that we need the waiter.
Silverwear paired at 6 o'clock (or 4 o'clock) means were done eating.
Fork at 8, knife at 4 means we're not done yet
Slight pantomime from across the room of writing with right hand on palm of left hand means that we need the bill
Credit card sticking out of check folder, which is laid just over edge of table means that we're ready to pay.