FUNCTION SETEXACT()

  Short:
  ------
  SETEXACT() Determines if exact is on/off

  Returns:
  --------
  <lExact> => Exact is on/off

  Syntax:
  -------
  SETEXACT([lNew])

  Description:
  ------------
  Returns current SET EXACT setting and optionally sets
  exact on/off with [lNew]  .t. = ON .f. = OFF

  Examples:
  ---------
   nOldexact = SETEXACT(.f.) // SET EXACT OFF

   * code

   SETEXACT(nOldexact)

  Source:
  -------
  S_SETEX.PRG