rn value because otherwise
there'd be no difference from returning a false boolean value.


<p><br>[Function]
<br><a class=none name="container-p"><b>container-p</b> <i> object </i> =&gt; <i> generalized-boolean</i></a>

<blockquote><br>
Returns <em>true</em> if <code><i>object</i></code> is a container, <code>NIL</code> otherwise.
</blockquote>

<p><br>[Function]
<br><a class=none name="box"><b>box</b> <i> object </i> =&gt; <i> container</i></a>

<blockquote><br>
Converts Lisp objects to containers wrappin