Related Clues:

• Abbr. above zero
• Emergency PC key
• Abbr. under a zero
• Emergency key
• Keyboard key
• Bailout key on a PC
• Person who's a zero?: Abbr.
• Phone abbr.
• Key above ~
• Button below the 8
• Upper-left key
• Phone button letters
• Computer button
• Bailout key
• F1 neighbor