nbsp;open_process&nbsp;:&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="constructor">Pervasives</span>.in_channel&nbsp;*&nbsp;<span class="constructor">Pervasives</span>.out_channel
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;sleep&nbsp;:&nbsp;int&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;unit
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;socket&nbsp;:
&nbsp;&nbsp;&nbsp;&nbsp;<span class="constructor">Unix</span>.socket_domain&nbsp;<span class="keywordsign">-&gt;<