.
 </PRE>
<h4><a name="Required_Reading">Required_Reading</a></h4>
<PRE>
 
   <a href="../req/scanning.html">SCANNING</a> 
 </PRE>
<h4><a name="Keywords">Keywords</a></h4>
<PRE>
 
   CHARACTER 
   SEARCH 
   UTILITY 
 

</PRE>
<h4><a name="Brief_I/O">Brief_I/O</a></h4>
<PRE>
 
   VARIABLE  I/O  DESCRIPTION 
   --------  ---  -------------------------------------------------- 
   str        I   Any character string. 
   chars      I   A collection of characters. 
   start      I   Position to begin looking f