Related Clues:

• Something to be learned (with ''the'')
• Basic procedures, idiomatically
• Ali's "Rumble in the Jungle" supporters
• Boxing-ring boundaries
• Cattle catchers
• What tyros must learn
• They're sometimes skipped
• Strong cords
• You must know there are sheets of them on board
• Are the eggs about to sound soft for the sheets on board?
• Get to know them by cable
• Escape artist's props
• One knows them to be well-informed
• Prose composition benefits from their knowledge
• Binders known by old hands