lays words on the screen</li>
              <li><code>man</code>: displays <strong>man</strong>ual pages for a specified command</li>
            </ul>
          </li>
        </ul>
      </div>

      <div class='col-md-3 sticky'>
        <nav class='hidden-print hidden-sm hidden-xs sidebar'>
          <ul>
            <li><a href="#meet-the-terminal">Meet the Terminal</a></li>
            <li><a href="#the-filesystem">The Filesystem</a></li>
            <ul>
              <li><a href="#directories">Direct