Is there a way to limit the table of contents to only show the top two
levels or specifically here is an example:
==Header1==
===Header1a===
===Header1b===
====Header1b1===
==Header2==
In this instance I only want the TOC to be built with the ones that
have either == or ===. So in this example ====Header1b1==== would not
show in the TOC since it has ==== as a level.