: (atom (123))
-> NIL
</pre></dd>

<dt><a id="aux"><code>(aux 'sym 'cls ['hook] 'any ..) -> sym</code></a></dt>
<dd>Returns a database object of class <code>cls</code>, where the value for
<code>sym</code> corresponds to <code>any</code> and the following arguments.
<code>sym</code>, <code>cls</code> and <code>hook</code> should specify a
<code><a href="refT.html#tree">tree</a></code> for <code>cls</code> or one of
its superclasses, for a relation with auxiliary keys. For multi-key accesses,
<code>aux</code