diff --git a/docs/newforms.txt b/docs/newforms.txt
index 0b5559ab88..4e5df6d149 100644
--- a/docs/newforms.txt
+++ b/docs/newforms.txt
@@ -1499,6 +1499,33 @@ the bottom of this document, for examples of their use.
 ``SplitDateTimeField``
 ~~~~~~~~~~~~~~~~~~~~~~
 
+Fields which handle relationships
+---------------------------------
+
+For representing relationships between models, two fields are
+provided which can derive their choices from a ``QuerySet``, and which
+place one or more model objects into the ``cleaned_data`` dictionary
+of forms in which they're used. Both of these fields have an
+additional required argument:
+
+``queryset``
+    A ``QuerySet`` of model objects from which the choices for the
+    field will be derived, and which will be used to validate the
+    user's selection.
+
+``ModelChoiceField``
+~~~~~~~~~~~~~~~~~~~~
+
+Allows the selection of a single model object, suitable for
+representing a foreign key.
+
+``ModelMultipleChoiceField``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Allows the selection of one or more model objects, suitable for
+representing a many-to-many relation.
+
+
 Creating custom fields
 ----------------------