Related Clues:

• Wipe the blackboard
• Backspace, perhaps
• Clean the blackboard
• Answering-machine button
• Clear, as a tape
• Render blank, as a floppy disk
• Key near Insert
• Use the backspace key, perhaps
• Clear, as a hard drive
• Start to correct, in a way
• Get the graphite out
• Bleep out, e.g.
• De-chalk
• Rub the wrong away
• TiVo option