word">of</span>&nbsp;string<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;backend_type&nbsp;:&nbsp;<span class="constructor">Sys</span>.backend_type<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;unix&nbsp;:&nbsp;bool<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;win32&nbsp;:&nbsp;bool<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;cygwin&nbsp;:&nbsp;bool<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;word_size&nbsp;:&nbsp;int<br>
&nbsp;&nbsp;<span class="keyword">val</s