title: rmarkdown section numbering depth for html documents
body: <p>I am numbering sections and specifying table of contents depth using the following in the <code>yaml</code> header:</p>
  
  <pre><code>output:
    html_document:
      toc: yes
      toc_depth: 3
      number_sections: true
      toc_float: 
        collapsed: false
      code_folding: hide
      theme: cerulean
  </code></pre>
  
  <p>For sections that are automatically numbered, I'm getting depth 4 sections (<code>#### ....</code>) numbered.  How can I specify the depth limit for section numbering?  I know how to suppress numbering using <code>#### .... {-}</code> but would enjoy having something more automatic.</p>