Index: modules/user/user.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/user/user.module,v
retrieving revision 1.1124
diff -u -p -r1.1124 user.module
--- modules/user/user.module	13 Feb 2010 21:19:16 -0000	1.1124
+++ modules/user/user.module	17 Feb 2010 00:20:22 -0000
@@ -2077,6 +2077,11 @@ function user_external_login_register($n
   user_login_submit(array(), $form_state);
 }
 
+/**
+ * Generate a unique URL for a user to login and reset their password.
+ *
+ * @see user_mail_tokens()
+ */
 function user_pass_reset_url($account) {
   $timestamp = REQUEST_TIME;
   return url("user/reset/$account->uid/$timestamp/" . user_pass_rehash($account->pass, $timestamp, $account->login), array('absolute' => TRUE));