= Reset

        RESet [X] [L]
          (same as double Esc if no operand)
          .reset reverse character of found word or copied range
           by Cut & Paste
          .clear line command except label which is not yet processed.
          .reset reverse display on err line.

          X : re-display all hidden lines.
          L : clear label cmd (same effect as 3 times Esc key)