r">Unix</span>.file_descr&nbsp;*&nbsp;<span class="constructor">Unix</span>.file_descr
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;open_process_in&nbsp;:&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="constructor">Pervasives</span>.in_channel
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;open_process_out&nbsp;:&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="constructor">Pervasives</span>.out_channel
&nbsp;&nbsp;<span class="keyword">val</span>&