ting quotes. 
                  If a string token is not found, the returned value 
                  of nchar is zero. 
 </PRE>
<h4><a name="Parameters">Parameters</a></h4>
<PRE>
 
   None. 
 </PRE>
<h4><a name="Exceptions">Exceptions</a></h4>
<PRE>
   1) If the input argument first is less than 1 or greater than 
      len(string)-1, the returned value of last is first-1, and the 
      returned value of nchar is zero. 
 
   2) It is not an error for a quoted string token to consist of 
      two consecut