STRCNT

       Count number of occurrences of a substring in a string.

       text/strings

       num = strcnt(strn, substring, [pos])

       string    -- The string in which to count occurences.     in
       substring -- The substring to count occurrences of.       in
       pos       -- the position at which to begin the search.   [in]
                    If not supplied, start at beginning of
                    string.

       /HELP     -- Print useful message and return.

       num       -- Number of occurances of substring in string. out

       Overlapping occurances are not counted separately.  For
       example, counting occurances of 'bb' in 'blah bbb' returns one
       occurance.

       $Id: strcnt.pro,v 1.3 1996/06/14 20:00:27 mcraig Exp $
       $Log: strcnt.pro,v $
       Revision 1.3  1996/06/14 20:00:27  mcraig
       Updated Copyright info.
       Revision 1.2  1996/05/09 00:22:17  mcraig
       Added fast processing using BYTE arrays if we are counting occurences of
       a single character.  Added error handling.
       Revision 1.1  1996/01/31 18:47:37  mcraig
       Initial revision

       $Name: Rel_2_1_2 $

  Copyright (C) 1996 The Regents of the University of California, All
  Rights Reserved.  Written by Matthew W. Craig.
  See the file COPYRIGHT for restrictions on distrubting this code.
  This code comes with absolutely NO warranty; see DISCLAIMER for details.

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