A hierarchy of small wiki pages is easier to maintain than one large wiki page with sections. However, if you want to divide your content into sections within a single wiki page, this page provides an example. 

{scrollbar:icons=false}

Large Topic Example One

This page has information about an important topic that is large, usually in scope and in amount of content. The page title is still at heading level one. However, in this case, it is not anticipated that other pages will need to be added. Therefore the information is all on this page. Subheadings information for this example fits on one page. Therefore subheadings rather than separate child pages are used and there is a table of contents. This is the markup: {toc:minLevel=2}The Table of Contents macro for this page follows, with "2" as the minimum heading level to display.

The following topics are included:

First level two sub heading

This is the first sub topic.

Second level two sub heading

This is the second sub topic. There may be many. Page length is up to you, but if you think you will want to export pages to PDF, and that page length may become too long, limit the top level page to a list of child pages and put each sub topic on a separate page. Continue to Large Topic Example Two to see.

...

.