</span>.filename&nbsp;option&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;unit<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;export&nbsp;:&nbsp;<span class="constructor">OpamTypes</span>.filename&nbsp;option&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;unit<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;remove&nbsp;:&nbsp;<span class="constructor">OpamTypes</span>.switch&nbsp;<span class="k