The page name on a line by itself
---- A blank line ----
The page content

A notebook using this format will have a single table of contents index listing each page alphabetically.

To create a index hierarchy, add one or more lines above the page name and before the first blank line. For example:

List of Members
Bill Clinton

All the pages with "List of Members" on the first line will be indexed on a page titled, you guessed it, "List of Members." You can add an arbitrary number of "layers" to the heirarchy. The only restriction is that each page and index must have a unique name. For example:

US Government
Executive Branch
List of Members
Bill Clinton