private boolean evaluateMoveClause(String str) {
		float[] x = parseCoordinates(str);
		if (x == null)
			return false;
		int n = model.getAtomCount();
		for (int k = 0; k < n; k++) {
			if (model.atom[k].isSelected())
				model.atom[k].translate(x[0], x[1], x[2]);
		}
		view.refresh();
		view.repaint();
		model.notifyChange();
		return true;
	}