ble>
</dd>
<br>
<dt>
<b>OUTPUT</b>
</dt>
<dd>
<table border="0">
<tr>
<td valign="top" align="left"><tt>unit&nbsp;&nbsp;&nbsp;</tt></td><td>   unit number returned by this function <br>&nbsp;&nbsp;&nbsp;<span class="type">[integer]</span></td>
</tr>
</table>
</dd>
<br>
</dl>
</li>
<li>
<a name="open_direct_file"></a>
<h4>open_direct_file</h4>
<dl>
<dt>
<b>DESCRIPTION</b>
</dt>
<dd>   Opens single direct access file for reading by all PEs or
   writing by root PE only
   the file has native format and no mpp