function block($text)
    {
        $pre = $php = $txp = $notextile = false;
        $find = array('bq', 'h[1-6]', 'fn\d+', 'p');

        $text = preg_replace("/(.+)\n(?![#*\s|])/",
            "$1<br />", $text);

        $text = explode("\n", $text);
        array_push($text, " ");

        foreach($text as $line) {
            if (preg_match('/<pre>/i', $line)) {
                $pre = true;
            }
            if (preg_match('/<notextile>/i', $line)) {
                $notextile = true;
            }
            elseif (preg_match('/<txp:php>/i', $line)) {
                $php = true;
            }
            elseif (preg_match('/^\s*<txp:/i', $line)) {
                $txp = true;
            }


            foreach($find as $tag) {
                $line = ($pre == false and $php == false and $txp == false and $notextile == false)
                ? preg_replace_callback("/^($tag)($this->a$this->c)\.(?::(\S+))? (.*)$/",
                    array(&$this, "fBlock"), $line)
                : $line;
            }

            $line = (!$php and !$txp and !$notextile) ? preg_replace('/^(?!\t|<\/?pre|<\/?code|$| )(.*)/', "\t<p>$1</p>", $line) : $line;

            $line = ($pre or $php or $notextile) ? str_replace("<br />", "\n", $line):$line;
            if (preg_match('/<\/pre>/i', $line)) {
                $pre = false;
            }
            if (preg_match('/<\/notextile>/i', $line)) {
                $notextile = false;
            }
            elseif (preg_match('/<\/txp:php>/i', $line)) {
		$php = false;
            }
			if ($txp == true) $txp = false;
            $out[] = $line;
        }
        return join("\n", $out);
    }