public function canonical($option)
	{
		if (is_array($option))
		{
			$option = implode('', $option);
		}
		$option = preg_replace('/[^A-Z0-9_\.-]/i', '', $option);
		if (substr($option, 0, strlen('com_')) != 'com_')
		{
			$option = 'com_' . $option;
		}
		return $option;
	}