Related Clues:

• F1 neighbor, on PCs
• Corner PC key
• PC undo key
• PC key near F1
• Keyboard button in the upper left
• Key for closing a window
• Upper-left computer key
• PC corner key
• Mtge. subject
• Computer key at top left
• PC way out?
• Key at the top left
• Back-out key
• Button to keep your finger on when viewing NSFW content
• Abbr. on a keypad