Related Clues:

• PC panic button
• Bottom-row PC key
• Upper-left PC key
• PC 'oops' key
• Important PC feature
• Emer. key
• Letters on a keyboard key
• Key to getting out of a jam?
• Letters above ~, on many keyboards
• On a PC, it does nothing by itself
• Computer-keyboard key
• Abbr. on a PC key
• Keyboard abbr.
• Exit-the-program button
• Key near the tilde