trong id='bold34734'
>if</strong> (&gt; a 0) (<strong id='bold34735'
>begin</strong> (print a) a))
</pre>
</td></tr>
</tbody></table></center>

The same example can written with a <code id='code26307'
>define-macro</code> form:
<center id='center26313'
><table cellspacing="0" class="color" cellpadding="0" width="95%"><tbody>
<tr><td bgcolor="#ffffcc"><pre class="prog" id='prog26311'
>(<font color="#6959cf"><strong id='bold34736'
>define-macro</strong></font> (<font color="#6959cf"><strong id='bold34738'
>wh