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The 4mm verse spacing was too subtle relative to the inter-line gaps within chord-lyric sections, making section boundaries hard to distinguish. Increasing to 6mm creates a clear visual break between consecutive song sections (verses, choruses, bridges, repeats). Also updated the example songbook.yaml to use the improved defaults (chord_line_spacing: 1, verse_spacing: 6). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>