;</td><td valign="baseline"> A <a href="ref-glossary.html#id86">generalized&nbsp;boolean</a>
</td></tr></table>
</p>
<p><span class="fndoclabel">Returns</span> <br />True if <nobr><var>condition-variable</var></nobr> is unblocked before
<nobr><var>seconds</var></nobr> seconds have elapsed; <code>nil</code> if the timeout has occurred.
</p>
<p><span class="fndoclabel">Errors</span> <br />The <a href="ref-glossary.html#gl:lock">lock</a> (or <a href="ref-glossary.html#id194">recursive&nbsp;lock</a>) associated