protected void addToGUI(JPanel gui,JTextField b,String cmd){
  b.setActionCommand(cmd);
  b.addActionListener(this);
  gui.add(b);
}

protected void addToGUI ( JPanel gui , JTextField b , String cmd ) { b . setActionCommand ( cmd ) ; b . addActionListener ( this ) ; gui . add ( b ) ; }
adds a feature to the gui attribute of the e00layer object
