Changes

=== Sub section ===

As an example, we'll place a sub section here. If you click edit (next to this section), you'll notice that sub categories have '''three''' equals signs on each side of the sub section title.<ref>sub section citation</ref> You'll also notice that not only does the title of a sub section look somewhat different (smaller font), but the sub section index at the top of the page also reflects the new hierarchy.

==== A sub sub section ====

You can create a deeper hierarchy by adding even more equals symbols. You'll notice that with every level, the title looks a bit different. At this level the horizontal line disappears.<ref>sub sub section citation</ref>