This is our top-level category; looking at it another way, it is the root category.
Ideally, every other category should be a subcategory of at least one other, and every article should be in at least one category; many will fit well into two or more (e.g. location, year, and subject-matter).
This category has the following 9 subcategories, out of 9 total.
Pages in category "The Wonderful Wiki of Oz"
This category contains only the following page.