Related Clues:

• Key next to f1, often
• Key that might close a dialog box
• Top-left PC key
• Corner keyboard key
• Get-out key
• Key near space
• PC's panic button
• 'Help!' key
• Key pressed frantically during a crash
• Key on a PC
• Laptop's panic-button
• PC backup key
• Letters above a tilde
• Shift-key neighbor
• Key at the ready when viewing NSFW content, maybe