t>
<b>DESCRIPTION</b>
</dt>
<dd>   return size of field after call to init_external_field.
   Ordering is X/Y/Z/T.
   This call only makes sense for non-distributed reads. </dd>
<br>
<br>
<dt>
<b>INPUT</b>
</dt>
<dd>
<table border="0">
<tr>
<td valign="top" align="left"><tt>index&nbsp;&nbsp;&nbsp;</tt></td><td>   returned from previous call to init_external_field. <br>&nbsp;&nbsp;&nbsp;<span class="type">[integer]</span></td>
</tr>
</table>
</dd>
<br>
</dl>
</li>
<li>
<a name="time_interp_external_exit"></a