Originally Posted by
msb0b
Sometimes the open and close buttons are color-coded. Red for close and green for open. Or is it green to close the doors and make the elevator go, and red to stop the elevator and open the doors? Now i'm confused.
Green for open and red for close.
Sometimes there will be an extra button with the open/close ones to hold the doors open until another button is pressed. Obviously, pressing and holding the open button or call button outside the elevator will also keep the doors open. People tend to be polite in Japan and do this for other users.