Related Clues:

• Blown-up area
• Indispensable
• Map detail
• "Defense of Fort M'Henry" author
• Map section
• Tab, for one
• Free-throw area
• Anthem author
• Map enlargement
• Atlas blow-up
• CTRL, e.g.
• Integral
• "Defense of Fort M'Henry" writer
• G, but not H
• Decoder's tool