in Unix, starts
   with <code class="code">/</code>).<br>
</div>

<pre><span id="VALis_implicit"><span class="keyword">val</span> is_implicit</span> : <code class="type">string -&gt; bool</code></pre><div class="info ">
Return <code class="code"><span class="keyword">true</span></code> if the file name is relative and does not start
   with an explicit reference to the current directory (<code class="code">./</code> or
   <code class="code">../</code> in Unix), <code class="code"><span class="keyword">false