Syntax:  REDO

  Reverses the most recent UNDO command.

  A followup command to UNDO, the REDO command reverses the most recent
  function that was undone and replaces the original function.  The
  REDO replaces any LSE function except for the UNDO and REDO commands.

  RELATED COMMANDS:

     REDO                        SHOW MAX UNDO
     SET MAX UNDO