of contents and reference sections,
      two <a href="common.xsl">XSL</a> <a href="knitr.xsl">files</a> 
      that are used to transform the XML to
      the 'knitr' document, and a <a href="Makefile">Makefile</a> that
      contains code for the other transformations and coordinates
      everything.  
    </li>
      <li>
      This document was generated within a 
      <a href="https://www.docker.com/">Docker</a> container.
      The Docker command to build the document
      is included in the Makefi