code: public static void main(String[] args) throws Exception {
          RLogPanel log = new RLogPanel();
          JFrame f = new JFrame();
          f.setContentPane(log);
          f.setVisible(true);
          f.pack();
          Rsession R = RserveSession.newInstanceTry(log, null);
          R.rawEval("ls()");
      }
docs: System.getProperty("RLogPanel.filter", "(.*)");