4. Section to show off pages with many sub pages

To create an additional level of nesting in the sidebar, construct a nested toctree:

• 4.1. Sub page 1
• 4.2. Sub page 2
• 4.3. Section with sub sub pages
  • 4.3.1. Sub sub page 1
    • 4.3.1.1. Sub sub sub page 1
  • 4.3.2. Sub sub page 2
  • 4.3.3. Sub sub page 3