diff --git a/IPython/utils/tempdir.py b/IPython/utils/tempdir.py
index f76d3c0..2e7ec51 100644
--- a/IPython/utils/tempdir.py
+++ b/IPython/utils/tempdir.py
@@ -1,3 +1,9 @@
+""" This module contains classes - NamedFileInTemporaryDirectory, TemporaryWorkingDirectory.
+
+These classes add extra features such as creating a named file in temporary directory and 
+creating a context manager for the working directory which is also temporary.
+"""
+
 import os as _os
 import warnings as _warnings
 import sys as _sys