The top menu shows the main sections of the site. When you mouse over a top-level heading, it shows the children in that section:
If you then mouse over a child page - e.g. "4.4. Market research" in the example below - it will show the children for that page:
All subjects have a Home submenu at the beginning of the top menu.
The Home submenu contains the following details:
- Site map
- Latest updates
- Teaching materials
- Blog