Related Clues:
- Remove, as errors
- Help the teacher, perhaps
- Clear from memory
- Clear tape
- Wipe the blackboard
- Backspace, perhaps
- Clean the blackboard
- Answering-machine button
- Clear, as a tape
- Render blank, as a floppy disk
- Use the backspace key, perhaps
- Clear, as a hard drive
- Start to correct, in a way
- Get the graphite out
- Bleep out, e.g.