* @param array $hints Hints given as an associative array. Known keys:
* - 'generate-html' => bool: Whether the caller is interested in output HTML (as opposed
* to just meta-data). Default is to generate HTML.
* @param array $hints Hints given as an associative array. Known keys:
* - 'generate-html' => bool: Whether the caller is interested in output HTML (as opposed
* to just meta-data). Default is to generate HTML.