of `values', then this routine may overwrite  
      memory.  The results are unpredictable. 
 
   5) If the input string pointer `item' is null, the error
      SPICE(NULLPOINTER) will be signaled.

   6) If either of the input strings referred to by `item' contains
      no data characters, the error SPICE(EMPTYSTRING) will 
      be signaled.
</PRE>
<h4><a name="Files">Files</a></h4>
<PRE>
 
   None. 
 </PRE>
<h4><a name="Particulars">Particulars</a></h4>
<PRE>
 
   This routine simplifies looking up PCK