Table of contents usually includes the titles and sub-title (headers) to be used like chapter on page where the content is seperated in paragraph or sections.

There are many different tools in Tiki related to Table of content;

AutoToc, to allow adding an automatic Table Of Contents to Wiki page (global and per page setting)
Maketoc, used to automatically generate a table of contents from the headings on a page.
TOC, available if the Wiki Structure feature is enabled to display a table of contents based on all the element of a structure/document. (ex.: a book)

Some of them have an inline plugin and there are also setting related to Table Of Contents at the Tiki Control Panel Print.

See: Navigation Overview, AutoToc, Maketoc or PluginToc for how to include a table of contents in a page.