title: Non-TOC headings within a reStructuredText page
body: <p>I'm writing some documentation using Sphinx. </p>
  
  <p>Is there a way to format headings within a page which do not become part of the TOC?
  Ideally with some hierarchy that is reflected in formatting?</p>
  
  <p>E.g. I want to do</p>
  
  <pre><code>My page TOC heading
  ===================
  
  Subheading (not in TOC, and should be formatted e.g. smaller than the heading)
  +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  
  Sub-subheading (not in TOC, and formatted e.g. smaller than the subheading)
  ###########################################################################
  </code></pre>
  
  <p>Any other suggestions for how to markup the text so that it has a more structured appearance for the reader are also welcome.</p>