></li>
  <li>the drawing instructions that used to appear in <b>appearance{i+1}</b>
  now appear in <b>appearance.body{i}</b></li>
</ul>

<h3>Changes to Drawing Instructions</h3>

<ul>
  <li><b>{'box',A}</b> becomes <b>'box',B</b>, where <b>B=A'</b></li>
  <li><b>{'cyl',c,r,h,'X/Y/Z'}</b> becomes <b>'cyl',[p1;p2],r</b>,
    where <b>p1</b> and <b>p2</b> are row vectors containing the coordinates
    of the centres of the two end faces of the cylinder</li>
  <li><b>{'vertex',V}</b> becomes <b>'vertices',V</b