Related Clues:

• Clean the blackboard
• Answering-machine button
• Clear, as a tape
• Editing choice
• Render blank, as a floppy disk
• Reverse, on an edit menu
• Backwards-arrow command
• Change-of-heart word processing command
• Reverse, in word processing
• 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