nimplemented feature is an error.
But see <span
class="defn"><a href="serialize.html#defie">define-ignored-elements</a></span>.</p>

<table class="layout1" role="presentation">
<tr>
<td class="methsig"><span class="defn">rse::*class-slot-specifications*</span>
</td>
<td class="methsig1">Variable
</td>
</tr>
</table>

<p class="bodytext">Used to accumulate slot specifications derived from property and class
definitions, to be processed upon reaching a closing <span
class="xmldefn">rdf:RDF</span> tag.</p>

<t