"keyword">external</span>&nbsp;argv&nbsp;:&nbsp;string&nbsp;array&nbsp;=&nbsp;<span class="string">"%sys_argv"</span><br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;executable_name&nbsp;:&nbsp;string<br>
&nbsp;&nbsp;<span class="keyword">external</span>&nbsp;file_exists&nbsp;:&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;bool&nbsp;=&nbsp;<span class="string">"caml_sys_file_exists"</span><br>
&nbsp;&nbsp;<span class="keyword">external</span>&nbsp;is_directory&nbsp;:&nbsp;string&nbsp;<s