Documentation for login_hint

docs/config_general.rst

@@ -259,14 +259,19 @@ Prefill user login
 ------------------
 
 If Self Service Password is called from another application, you can
-prefill the login but sending an HTTP header.
+prefill the login by sending an HTTP header.
 
-To enable this feature:
+To enable this feature, configure the name of the HTTP header:
 
 .. code-block:: php
 
    $header_name_preset_login = "Auth-User";
 
+It is also possible to prefill the login by using the ``login_hint``
+GET or POST parameter. This method does not require any configuration.
+
+Example: ``https://ssp.example.com/?actionresetbyquestions&login_hint=spiderman``
+
 Captcha
 -------