Index: django/template/context.py
===================================================================
--- django/template/context.py	(revision 14649)
+++ django/template/context.py	(working copy)
@@ -74,7 +74,7 @@
         super(Context, self).__init__(dict_)
 
     def update(self, other_dict):
-        "Like dict.update(). Pushes an entire dictionary's keys and values onto the context."
+        "Pushes other_dict to the stack of dictionaries in the Context"
         if not hasattr(other_dict, '__getitem__'):
             raise TypeError('other_dict must be a mapping (dictionary-like) object.')
         self.dicts.append(other_dict)
Index: docs/ref/templates/api.txt
===================================================================
--- docs/ref/templates/api.txt	(revision 14649)
+++ docs/ref/templates/api.txt	(working copy)
@@ -281,6 +281,22 @@
     ...
     django.template.ContextPopException
 
+In addition to ``push()`` and ``pop()``, the ``Context``
+object also defines an ``update()`` method. This works like ``push()``
+but takes a dictionary as an argument and pushes that dictionary onto
+the stack instead of an empty one.
+
+    >>> c = Context()
+    >>> c['foo'] = 'first level'
+    >>> c.update({'foo': 'updated'})
+    {'foo': 'updated'}
+    >>> c['foo']
+    'updated'
+    >>> c.pop()
+    {'foo': 'updated'}
+    >>> c['foo']
+    'first level'
+
 Using a ``Context`` as a stack comes in handy in some custom template tags, as
 you'll see below.