The toc directive is supplied by the toc plugin.

Add a table of contents to a page:

[[!toc  ]]

The table of contents will be automatically generated based on the headers of the page. By default only the largest headers present on the page will be shown; to control how many levels of headers are shown, use the levels parameter:

[[!toc  levels=2]]

The toc directive will take the level of the first header as the topmost level, even if there are higher levels seen later in the file.

To create a table of contents that only shows headers starting with a given level, use the startlevel parameter. For example, to show only h2 and smaller headers:

[[!toc  startlevel=2]]

The table of contents will be created as an ordered list. If you want an unordered list instead, you can change the list-style in your local style sheet.