sp;<span class="keywordsign">-&gt;</span>&nbsp;bool<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;readlink&nbsp;:&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;string<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;select&nbsp;:<br>
&nbsp;&nbsp;&nbsp;&nbsp;read:<span class="constructor">UnixLabels</span>.file_descr&nbsp;list&nbsp;<span class="keywordsign">-&gt;</span><br>
&nbsp;&nbsp;&nbsp;&nbsp;write:<span class="constructor">UnixLabels</span>.file_descr&nbsp;list&nbsp;<span cl