For this example: Page = Node = Item (we'll call them all the same thing but understand there are some technical differences we won't discuss).
If you have a website (www.domain.com) and it has 10 top level pages and each of those top level pages has 10 sub pages, those sub pages are direct children. Now if each of your sub level pages have 10 sub pages, you've simply taken your 10 page site into a 1,000 page site.
-
page 1 (node, up to 1,000 directly under /page 1)
- page 1 (child nodes)
- page 2
- page 3
- page 4
- page 5
- page 6
- page 7
- page 8
- page 9
- page 10
-
page 2
- page 1 (child nodes, up to 1,000 directly under /page 2/page 1)
- page 2
- page 3
- page 4
-
page 5
- page 1 (child nodes, up to 1,000 directly under /page 2/page 5/page 1)
- page 2 (child nodes, up to 1,000 directly under /page 2/page 5/page 2)
- page 3
- page 4
- page 5
- page 6
- page 7
- page 8
- page 9
- page 10
- page 6
- page 7
- page 8
- page 9
- page 10