diff --git a/docs/authentication.txt b/docs/authentication.txt
index 637921af84..a05624db68 100644
--- a/docs/authentication.txt
+++ b/docs/authentication.txt
@@ -99,7 +99,7 @@ custom methods:
       should prefer using ``is_authenticated()`` to this method.
 
     * ``is_authenticated()`` -- Always returns ``True``. This is a way to
-      tell if the user has been authenticated. This does not imply any 
+      tell if the user has been authenticated. This does not imply any
       permissions, and doesn't check if the user is active - it only indicates
       that the user has provided a valid username and password.
 
@@ -114,16 +114,17 @@ custom methods:
       string is the correct password for the user. (This takes care of the
       password hashing in making the comparison.)
 
-    * ``set_unusable_password()`` -- Marks the user as having no password set. 
-      This isn't the same as having a blank string for a password.
-      ``check_password()`` for this user will never return ``True``. Doesn't 
-      save the ``User`` object.
-      
-      You may need this if authentication for your application takes place  
+    * ``set_unusable_password()`` -- **New in Django development version.**
+      Marks the user as having no password set.  This isn't the same as having
+      a blank string for a password. ``check_password()`` for this user will
+      never return ``True``. Doesn't save the ``User`` object.
+
+      You may need this if authentication for your application takes place
       against an existing external source such as an LDAP directory.
 
-    * ``has_usable_password()`` -- Returns ``False`` if 
-      ``set_unusable_password()`` has been called for this user.
+    * ``has_usable_password()`` -- **New in Django development version.**
+      Returns ``False`` if ``set_unusable_password()`` has been called for this
+      user.
 
     * ``get_group_permissions()`` -- Returns a list of permission strings that
       the user has, through his/her groups.
@@ -137,7 +138,7 @@ custom methods:
 
     * ``has_perms(perm_list)`` -- Returns ``True`` if the user has each of the
       specified permissions, where each perm is in the format
-      ``"package.codename"``. If the user is inactive, this method will 
+      ``"package.codename"``. If the user is inactive, this method will
       always return ``False``.
 
     * ``has_module_perms(package_name)`` -- Returns ``True`` if the user has
@@ -163,10 +164,10 @@ Manager functions
 
 The ``User`` model has a custom manager that has the following helper functions:
 
-    * ``create_user(username, email, password=None)`` -- Creates, saves and 
+    * ``create_user(username, email, password=None)`` -- Creates, saves and
       returns a ``User``. The ``username``, ``email`` and ``password`` are set
       as given, and the ``User`` gets ``is_active=True``.
-      
+
       If no password is provided, ``set_unusable_password()`` will be called.
 
       See _`Creating users` for example usage.