diff --git a/tmlcode/README.txt b/tmlcode/README.txt
new file mode 100644
index 0000000000000000000000000000000000000000..71f85a927ac9cae37b31b2e37ea4c101f1fd34a1
--- /dev/null
+++ b/tmlcode/README.txt
@@ -0,0 +1 @@
+This folder is used to store the TML code that is automatically generated from UML/SysMl models in TTool.