Related Clues:

• Open, as a clasp
• Excel or Word function
• Use the delete key, e.g.
• Reverse command on a computer
• Untie
• Dismantle
• Hit 'back'
• Go back a step, in word processing
• Put back the way things were
• Reverse an action
• Reverse, as an action
• Word-processor command
• Free of knots
• Change back
• Release the buttons of