Related Clues:

• Key used to stop
• "Stop loading page" key
• Corner key that may get you out of a corner
• Wi-Fi connection?
• PC ''cancel'' key
• PC ''go back'' key
• Key to get out
• Central element of love-song
• 'Exit full-screen mode' button
• Key near a tilde
• The top left key on many keyboards
• Upper left key
• Key two rows above Tab
• Key above a ~
• 'Exit full screen mode' key