<li>Illustration XVIII (<a idref="sect318">Section 318</a>)</li>
<li>Illustration XIX (<a idref="sect328">Section 328</a>)</li>
<li>Illustration XX (<a idref="sect350">Section 350</a>)</li>
<li>Illustration XVIII (<a idref="sect318">Section 318</a>)</li>
<li>Illustration XIX (<a idref="sect328">Section 328</a>)</li>
<li>Illustration XX (<a idref="sect350">Section 350</a>)</li>