diff --git a/IPython/sphinxext/ipython_directive.py b/IPython/sphinxext/ipython_directive.py
index 7a294f1..e863fb6 100644
--- a/IPython/sphinxext/ipython_directive.py
+++ b/IPython/sphinxext/ipython_directive.py
@@ -104,8 +104,8 @@ or :okwarning: options:
         In [1]: 1/0
         In [2]: # raise warning.
 
-ToDo
-----
+To Do
+-----
 
 - Turn the ad-hoc test() function into a real test suite.
 - Break up ipython-specific functionality from matplotlib stuff into better
diff --git a/docs/source/index.rst b/docs/source/index.rst
index 890743a..57f0fe6 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -93,6 +93,7 @@ repository <http://github.com/ipython/ipython>`_.
    development/index
    coredev/index
    api/index
+   sphinxext
    about/index
 
 .. seealso::
diff --git a/docs/source/sphinxext.rst b/docs/source/sphinxext.rst
new file mode 100644
index 0000000..42af07b
--- /dev/null
+++ b/docs/source/sphinxext.rst
@@ -0,0 +1,8 @@
+========================
+IPython Sphinx extension
+========================
+
+IPython provides an extension for `Sphinx <http://www.sphinx-doc.org/>`_ to
+highlight and run code.
+
+.. automodule:: IPython.sphinxext.ipython_directive