r>
&nbsp;&nbsp;<span class="keyword">and</span>&nbsp;structure&nbsp;=&nbsp;<span class="constructor">Parsetree</span>.structure_item&nbsp;list<br>
&nbsp;&nbsp;<span class="keyword">and</span>&nbsp;structure_item&nbsp;=&nbsp;{<br>
&nbsp;&nbsp;&nbsp;&nbsp;pstr_desc&nbsp;:&nbsp;<span class="constructor">Parsetree</span>.structure_item_desc;<br>
&nbsp;&nbsp;&nbsp;&nbsp;pstr_loc&nbsp;:&nbsp;<span class="constructor">Location</span>.t;<br>
&nbsp;&nbsp;}<br>
&nbsp;&nbsp;<span class="keyword">and</span>&nbsp;struct