* not be used in the pager offset or in any links for users.
*
* If getIndexField() returns an array of 'querykey' => 'indexfield' pairs then
- * this must return a corresponding array of 'querykey' => array( fields...) pairs
- * in order for a request with &count=querykey to use array( fields...) to sort.
+ * this must return a corresponding array of 'querykey' => [ fields... ] pairs
+ * in order for a request with &count=querykey to use [ fields... ] to sort.
*
* This is useful for pagers that GROUP BY a unique column (say page_id)
* and ORDER BY another (say page_len). Using GROUP BY and ORDER BY both on