public void actionPerformed(ActionEvent e) {
		Grammar g = environment.getGrammar(UnrestrictedGrammar.class);
		if (g == null)
			return;
		UserControlParsePane userPane = new UserControlParsePane(environment, g);
		environment.add(userPane, "User Control Parser", new CriticalTag() {
		});
		environment.setActive(userPane);
	}