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After saving all 12 mnemonics, players see their full codebook — each letter with its Morse pattern (· —) and mnemonic phrase in a grid layout. Two actions: Print/Save PDF (window.print) and Start Playing. Operator name appears on the printed page. Print CSS hides UI chrome and renders a clean 3-column grid. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>