This is a special document type that automatically generates
a Table of Contents. Usually it's used as the 'index' document of a folder.
Then the parent folder displays a TOC when accessed (e.g.
http://www.x.yz/silva/myFolder). The AutoTOC is configurable: it can display
any selection of Silva content including assets, include descriptions or
icons, be set to stop at a specific depth, and use various sorting