Related Clues:

• Go back, on a PC
• Render null
• "Go back," on a PC
• Smudge at a crime scene
• Ruin a Continental celebration
• Remove the wrapping
• Computer command under "File"
• Reverse completely
• Remove, as a necktie
• Open up, as shoelaces
• Run off a paper copy of
• Control+Z computer command
• Fix a mistake
• "Go back!" computer command
• Release setter, maybe, that's no good at all