* These updates are executed after all hook_update_N() implementations. At this
* stage Drupal is already fully repaired so you can use any API as you wish.
*
- * NAME can be arbitrary machine names. In contrast to hook_update_N() the order
- * of functions in the file is the only thing which ensures the execution order
- * of those functions.
+ * NAME can be arbitrary machine names. In contrast to hook_update_N() the
+ * alphanumeric naming of functions in the file is the only thing which ensures
+ * the execution order of those functions. If update order is mandatory,
+ * you should add numerical prefix to NAME or make it completely numerical.
*
* Drupal also ensures to not execute the same hook_post_update_NAME() function
* twice.