* @param array $vars An associative array of display options for the menu.
* Options include:
* sort_by => string or php callback
- * string options: 'name', 'title' (default), 'order' (registration order)
- * php callback: a compare function for usort
+ * string options: 'name', 'title' (default), 'order' (registration order)
+ * php callback: a compare function for usort
+ * priority: the order the items were registered
+ * handler: the page handler to build action URLs
+ * entity: an ElggEntity to use to build action URLs
+ * class: the class for the entire menu.
*
* @return string
* @since 1.8.0