diff --git a/core/modules/user/user.module b/core/modules/user/user.module
index ead593b..3b718bd 100644
--- a/core/modules/user/user.module
+++ b/core/modules/user/user.module
@@ -1556,9 +1556,14 @@ function user_pass_rehash($password, $timestamp, $login) {
  * @param $uid
  *   The user ID of the user account to cancel.
  * @param $method
- *   The account cancellation method to use.
+ *   The account cancellation method to use.  Possible values:
+ *   - 'user_cancel_block': Disable the account and keep its content.
+ *   - 'user_cancel_block_unpublish': Disable the account and unpublish its content.
+ *   - 'user_cancel_reassign': Delete the account and make its content belong to the anonymous user.
+ *   - 'user_cancel_delete': Delete the account and its content.
  *
  * @see _user_cancel()
+ * @see user_cancel_methods()
  */
 function user_cancel($edit, $uid, $method) {
   global $user;