diff -r 79e469ae13b7 Doc/library/exceptions.rst
--- a/Doc/library/exceptions.rst	Fri Aug 08 17:24:06 2014 +0300
+++ b/Doc/library/exceptions.rst	Wed Aug 13 10:41:39 2014 -0400
@@ -467,7 +467,12 @@
 ^^^^^^^^^^^^^
 
 The following exceptions are subclasses of :exc:`OSError`, they get raised
-depending on the system error code.
+depending on the system error code. A table depicting the exception hierarchy for
+OS exceptions has been included for reference.
+
+.. literalinclude:: ../../Lib/test/exception_hierarchy.txt
+   :start-after: UnboundLocalError
+   :end-before: ReferenceError
 
 .. exception:: BlockingIOError