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 FUNCTION ALLBUT()

  Short:
  ------
  ALLBUT() Returns all but last x characters

  Returns:
  --------
  <cAllBut> => All but last n characters

  Syntax:
  -------
  ALLBUT(cInString,nAllBut)

  Description:
  ------------
  Returns all but the rightmost <nAllbutt> letters of
  <cInString>

  Examples:
  ---------

   string := "SUPERFUNCTION"
   string := ALLBUT(string,8)    //  => returns  "SUPER"

  Notes:
  -------
  Useful when you don't know the length of a string in
  order to take left(x) characters.

  Source:
  -------
  S_ALLBUT.PRG