o ">
Opening modes for <a href="Pervasives.html#VALopen_out_gen"><code class="code">open_out_gen</code></a> and
  <a href="Pervasives.html#VALopen_in_gen"><code class="code">open_in_gen</code></a>.<br>
</div>


<pre><span id="VALopen_out"><span class="keyword">val</span> open_out</span> : <code class="type">string -&gt; <a href="Pervasives.html#TYPEout_channel">out_channel</a></code></pre><div class="info ">
Open the named file for writing, and return a new output channel
   on that file, positioned at the 