diff --git a/docstring_formatter.py b/docstring_formatter.py
index c3359f0..f7d5eb0 100644
--- a/docstring_formatter.py
+++ b/docstring_formatter.py
@@ -1,5 +1,6 @@
 # encoding: utf-8
 """
+Internal utility functions for auto-creating tooltips from dosctrings.
 """
 
 import typing as _t