*
     * @param out the writer
     * @throws IOException if an error occurs
     */
    protected void saveLayout(Writer out, boolean typed) throws IOException {
        PropertiesWriter writer = new PropertiesWriter(out, typed);
        if (header != null) {
            for (String s : header) {
                writer.writeln(s);
            }
        }

        for (String key : storage.keySet()) {