Related Clues:

• "Go back," on a PC
• Ruin a Continental celebration
• Remove the wrapping
• Reverse completely
• Remove, as a necktie
• Open up, as shoelaces
• Control+Z computer command
• Fix a mistake
• "Go back!" computer command
• Release setter, maybe, that's no good at all
• Reverse, as a mistake
• Mistyping remedy
• Command-Z command
• Command following "Oops!"
• 'Augh! Erase that step!' computer command