code: public void setHiLoIndicatorVisible(final boolean HI_LO_INDICATOR_VISIBLE) {
          hiLoIndicatorVisible = HI_LO_INDICATOR_VISIBLE;
          init(INNER_BOUNDS.width, INNER_BOUNDS.height);
          repaint(INNER_BOUNDS);
      }
docs: Defines the visiblity of the hi/lo indicators
  @param HI_LO_INDICATOR_VISIBLE