public void setRightMarginShown(boolean val) {
    boolean old = myOptions.IS_RIGHT_MARGIN_SHOWN;
    if (old == val) return;
    myOptions.IS_RIGHT_MARGIN_SHOWN = val;
    myPropertyChangeSupport.firePropertyChange(PropNames.PROP_IS_RIGHT_MARGIN_SHOWN, old, val);
  }
public void setRightMarginShown(boolean val)