title: How to set Asciidoc toc.section.depth value from simple 'asciidoctor file.txt -o file.html' command?
body: <p><a href="http://www.methods.co.nz/asciidoc/faq.html#_the_asciidoc_toclevels_attribute_does_not_work_with_docbook_outputs_why" rel="nofollow">This FAQ section</a> describes how to set the "section depth"/"TOC level"/toclevel shown in the table of contents. However, I've no idea how to implement this in my simple:</p>
  
  <pre><code>$ asciidoctor my.txt -o my.html
  </code></pre>
  
  <p>command. Does anyone?</p>