diff --git a/doc/README_tml b/doc/README_tml
new file mode 100644
index 0000000000000000000000000000000000000000..5ca05cf572b858aa03ed7bea4acf2256c236933a
--- /dev/null
+++ b/doc/README_tml
@@ -0,0 +1,5 @@
+TTool, an open-source UML toolkit for modeling embedded systems and procotols.
+TTool is developed at ENST, http://labsoc.comelec.enst.fr/turtle/
+-------------------------------------------------------------------------------
+
+The tmlcode directory is intended to store the TML / TMAP files generated from TTool. To generate these files, please refer to http://labsoc.comelec.enst.fr/turtle/HELP
\ No newline at end of file
diff --git a/doc/README_uppaal b/doc/README_uppaal
new file mode 100644
index 0000000000000000000000000000000000000000..4afeb66886c3aa72bf07e1c77ccf256690e8c9a8
--- /dev/null
+++ b/doc/README_uppaal
@@ -0,0 +1,5 @@
+TTool, an open-source UML toolkit for modeling embedded systems and procotols.
+TTool is developed at ENST, http://labsoc.comelec.enst.fr/turtle/
+-------------------------------------------------------------------------------
+
+The uppaal directory is intended to store the uppaal files generated from TTool. To generate these files, please refer to http://labsoc.comelec.enst.fr/turtle/HELP
\ No newline at end of file