diff --git a/doc/cmake.py b/doc/cmake.py
index f164fd0d0b2dee0f937e7e3b53d6330c9f8deac8..6075cf5a75c6a62eba1bf43be6d153cf12c6a653 100644
--- a/doc/cmake.py
+++ b/doc/cmake.py
@@ -1,6 +1,8 @@
 # Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
 # file Copyright.txt or https://cmake.org/licensing for details.
 
+# Team SMNG note: This file comes from here: https://github.com/Kitware/CMake/blob/master/Utilities/Sphinx/cmake.py
+
 import os
 import re