A category is the "parent", and a album exists inside a category. An album may also be created
without a category. Categories are used to organize albums. For example, if we were organizing pictures of
automobiles our gallery may look like this.

Chevy (category)
- trucks (album)
- cars (album)
- mini vans (album)

GM (category)
- truks (album)
- cars (album)
- mini vans (album)
- cargo vans (ablum)

This document is FAQ534.