acros defined with <code id='code26289'
>define-expander</code> and <code id='code26290'
>define-macro</code>
are used by both the compiler and the interpreter.
</td></tr>
</tbody></table><br/>
Here is an example of an expander:
<center id='center26306'
><table cellspacing="0" class="color" cellpadding="0" width="95%"><tbody>
<tr><td bgcolor="#ffffcc"><pre class="prog" id='prog26304'
>(<font color="#6959cf"><strong id='bold34722'
>define-expander</strong></font> <font color="#6959cf"><strong id='bold34724'
