docs: @Override
      protected void paintComponent(Graphics g) {
          super.paintComponent(g);
  
          Graphics2D g2d = (Graphics2D) g;
          g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
  
          Java2DRenderer renderer = new Java2DRenderer(g2d, OkapiUI.factor, OkapiUI.paperColour, OkapiUI.inkColour);
          renderer.render(OkapiUI.symbol);
      }