[1.1.X] Fixed #11908 -- Clarified the role and usage of the ManagementForm in formsets. Thanks to timo for the draft patch.

Backport of r13222 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@13227 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/topics/forms/formsets.txt

@@ -123,10 +123,12 @@ the expected error message appears for the second item.
 Understanding the ManagementForm
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-You may have noticed the additional data that was required in the formset's
+You may have noticed the additional data (``form-TOTAL_FORMS`` and
-data above. This data is coming from the ``ManagementForm``. This form is
+``form-INITIAL_FORMS``) that was required in the formset's data above.
-dealt with internally to the formset. If you don't use it, it will result in
+This data is required for the ``ManagementForm``. This form is used by
-an exception::
+the formset to manage the collection of forms contained in the
+formset. If you don't provide this management data, an exception will
+be raised::
 
     >>> data = {
     ...     'form-0-title': u'Test',
@@ -141,6 +143,11 @@ It is used to keep track of how many form instances are being displayed. If
 you are adding new forms via JavaScript, you should increment the count fields
 in this form as well.
 
+The management form is available as an attribute of the formset
+itself. When rendering a formset in a template, you can include all
+the management data by rendering ``{{ my_formset.management_form }}``
+(substituting the name of your formset as appropriate).
+
 .. versionadded:: 1.1
 
 ``total_form_count`` and ``initial_form_count``