Fixed #10981 -- Clarified documentation regarding lazy cross-application…

Fixed #10981 -- Clarified documentation regarding lazy cross-application relationships. Thanks to Ramiro for the suggestion.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@10971 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/ref/models/fields.txt

@@ -800,21 +800,22 @@ you can use the name of the model, rather than the model object itself::
     class Manufacturer(models.Model):
         # ...
 
-Note, however, that this only refers to models in the same ``models.py`` file --
-you cannot use a string to reference a model defined in another application or
-imported from elsewhere.
-
-.. versionchanged:: 1.0
-   Refering models in other applications must include the application label.
+.. versionadded:: 1.0
 
-To refer to models defined in another
-application, you must instead explicitly specify the application label. For
-example, if the ``Manufacturer`` model above is defined in another application
-called ``production``, you'd need to use::
+To refer to models defined in another application, you can explicitly specify
+a model with the full application label. For example, if the ``Manufacturer``
+model above is defined in another application called ``production``, you'd
+need to use::
 
     class Car(models.Model):
         manufacturer = models.ForeignKey('production.Manufacturer')
 
+This sort of reference can be useful when resolving circular import
+dependencies between two applications.
+
+Database Representation
+~~~~~~~~~~~~~~~~~~~~~~~
+
 Behind the scenes, Django appends ``"_id"`` to the field name to create its
 database column name. In the above example, the database table for the ``Car``
 model will have a ``manufacturer_id`` column. (You can change this explicitly by
@@ -824,6 +825,9 @@ deal with the field names of your model object.
 
 .. _foreign-key-arguments:
 
+Arguments
+~~~~~~~~~
+
 :class:`ForeignKey` accepts an extra set of arguments -- all optional -- that
 define the details of how the relation works.
 
@@ -871,6 +875,9 @@ the model is related. This works exactly the same as it does for
 :class:`ForeignKey`, including all the options regarding :ref:`recursive
 <recursive-relationships>` and :ref:`lazy <lazy-relationships>` relationships.
 
+Database Representation
+~~~~~~~~~~~~~~~~~~~~~~~
+
 Behind the scenes, Django creates an intermediary join table to represent the
 many-to-many relationship. By default, this table name is generated using the
 names of the two tables being joined. Since some databases don't support table
@@ -882,6 +889,9 @@ You can manually provide the name of the join table using the
 
 .. _manytomany-arguments:
 
+Arguments
+~~~~~~~~~
+
 :class:`ManyToManyField` accepts an extra set of arguments -- all optional --
 that control how the relationship functions.