diff --git a/GPy/core/parameterization/__init__.py b/GPy/core/parameterization/__init__.py
index fb064c9c..28ac755f 100644
--- a/GPy/core/parameterization/__init__.py
+++ b/GPy/core/parameterization/__init__.py
@@ -1,3 +1,14 @@
+"""
+Introduction
+^^^^^^^^^^^^
+
+Extends the functionality of the `paramz` package (dependency) to support paramterization of priors (:py:class:`GPy.core.parameterization.priors`).
+
+.. inheritance-diagram:: GPy.core.parameterization.priors
+   :top-classes: paramz.core.parameter_core.Parameterizable
+"""
+
+
 # Copyright (c) 2012-2014, GPy authors (see AUTHORS.txt).
 # Licensed under the BSD 3-clause license (see LICENSE.txt)