private JMenu createNewFunctionMenu() {
		JMenu newFunctionMenu = new JMenu(
				this.menuActionMap.get(MenuActionType.NEW_FUNCTION_MENU));
		addActionToMenu(ActionType.ALGEBRIC_FORM, newFunctionMenu);
		addActionToMenu(ActionType.NUMERIC_FORM, newFunctionMenu);
		return newFunctionMenu;
	}