Sections, subsections, and deeper

Structure a book with as many nested layers as you need.

1. Inside a book, click Add section to create a top-level chapter.
2. Use Add subsection on any section to nest one level deeper — you can keep nesting as far as you like.
3. Sections are numbered automatically (1, 1.1, 1.1.1 …).
4. Use the arrows to reorder anything within its level.

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