Code
Generation" below for more details.</td></tr>
</table>

<h3>Adding a New Extension</h3>

<p>
To add a new extension, create a descriptor file for the extension in
<tt>auto/core</tt> and rerun the code generation scripts by typing
<tt>make clean; make</tt> in the <tt>auto</tt> directory.
</p>

<p>
The format of the descriptor file is given below. Items in
brackets are optional.
</p>

<p class="pre">
&lt;Extension Name&gt;<br>
[&lt;URL of Specification File&gt;]<br>
&nbsp;&nbsp;&nbsp;&nbsp;[&lt;Token Nam