Delete a section line and merge the two adjacent areas

Remove a section line to merge the two neighbouring sections back into one, as long as neither side is subdivided.

1. Double-clicking a section line opens its panel with a red 'Remove Section Line' action.

   ✓ Checked in the product on 10 October 2026

2. Deletion merges the two sections adjacent to that line back into one.

   ✓ Checked in the product on 21 October 2026

3. The first (top/left) section's canvas becomes the merged canvas.

   ✓ Checked in the product on 20 October 2026

4. All content from both sides is preserved and stays visually in place.

   ✓ Checked in the product on 21 October 2026

   

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5. The merge only works when BOTH adjacent sections are leaf sections (neither has been further subdivided by inner section lines).