public static function quoteRtfCode($text, $convertNewlines = true)
    {
        // escape backslashes and curly brackets
        $text = str_replace(array('\\', '{', '}'), array('\\\\', '\\{', '\\}'), $text);
        if ($convertNewlines) {
            $text = self::convertNewlinesToRtfCode($text);
        }

        return $text;
    }