Say you are late for a very important meeting and you have to get to the top floor of a skyscraper. Well, there’s a way you can be sure you go directly to that floor without stopping.
If you are on the elevator by yourself, or with someone else who is going to the same floor, you can hold down the close-door button (> <) and the floor you need to get to at the same time until the doors close.
By doing so, you will pass by all the other people waiting for the elevator on other floors.
Most modern elevators have this option as it was initiated by police and fire departments and is used in emergency situations. Nonetheless, the late-for-an-interview-commoner has been known to use the option from time to time.