public void newProject() throws IOException {
		boolean canceled = false;
		if (isChanged) {
			Object[] options = { Tools.getLocalizedString("YES"),
					Tools.getLocalizedString("NO") };
			JFrame frame = new JFrame();
			int n = JOptionPane.showOptionDialog(frame,
					Tools.getLocalizedString("EXIT_DIALOGUE"),
					"KS Boolean Expression", JOptionPane.YES_NO_OPTION,
					JOptionPane.YES_NO_OPTION, null, options, options[0]);
			if (n == JOptionPane.YES_OPTION) {
				save();
				if (isChanged)
					canceled = true;
			}
		}
		if (!canceled) {
			algebricForm();
			fileName = null;
			isChanged = false;

		}

	}