in the
    list.</li>
</ul>

    For the user to be able to specify anonymous arguments starting with a
    <code class="code">-</code>, include for example <code class="code">(<span class="string">"-"</span>, <span class="constructor">String</span> anon_fun, doc)</code> in <code class="code">speclist</code>.
<p>

    By default, <code class="code">parse</code> recognizes two unit options, <code class="code">-help</code> and <code class="code">--help</code>,
    which will print to standard output <code cla