Related Clues:

• "Defense of Fort M'Henry" writer
• G, but not H
• Decoder's tool
• Life-or-death
• C minor, for one
• Like some signs and statistics
• Answer sheet
• A flat, e.g.
• Of vital importance
• Sardine-can opener
• Ring dangler
• G, e.g., but not H
• See 38-Down
• Of prime importance
• Sardine can attachment