he <a href="ref-glossary.html#id222">space&nbsp;instance</a>
</p>
<p><span class="fndoclabel">See also</span>
<br>&nbsp;&nbsp;&nbsp;&nbsp;<a href="ref-make-space-instance.html"><b>make-space-instance</b></a>
</p>
<p><span class="fndoclabel">Example</span> <br />Return the <a href="ref-glossary.html#id74">extended&nbsp;unit-classes&nbsp;specifications</a> describing the allowed
classes that can have their <a href="ref-glossary.html#gl:instances">unit&nbsp;instances</a> stored on the <nobr><code>(bb
hyps)</co