title: How to specify numbered sections in Pandoc's front matter?
body: <p>I would like to specify numbered sections via Pandoc's support for YAML front matter. I know that the flag for the command-line usage is <code>--number-sections</code>, but something like</p>
  
  <pre><code>---
  title: Test
  number-sections: true
  ---
  </code></pre>
  
  <p>doesn't produce the desired result. I know that I am close because you can do this with the geometry package (e.g. <code>geometry: margin=2cm</code>). <strong>I wish there was a definitive guide on how Pandoc YAML front matter handling.</strong> For example, the following is very useful (avoids templates), but its discoverability is low:</p>
  
  <pre><code> header-includes: 
   - \usepackage{some latex package}
  </code></pre>