      If an error occurs on the call, `plates' is 
                  undefined. 
 </PRE>
<h4><a name="Parameters">Parameters</a></h4>
<PRE>
 
   See the header file
 
       SpiceDLA.h
 </PRE>
<h4><a name="Exceptions">Exceptions</a></h4>
<PRE>
 
   1) If the input handle is invalid, the error will be diagnosed by 
      routines in the call tree of this routine.  
 
   2) If a file read error occurs, the error will be diagnosed by 
      routines in the call tree of this routine. 
 
   3) If the input DLA d