diff --git a/README.md b/README.md
index 0c46978..361924f 100644
--- a/README.md
+++ b/README.md
@@ -6,5 +6,5 @@
 - run server.sh (install php when necessary: https://computingforgeeks.com/how-to-install-php-on-ubuntu/)
 - load in Browser http://localhost:8000/index2d.html and http://localhost:8000/index3d.html
 - Activate Web Console Tools (ctrl+shift+I)
-- Read comments in source file
+- Read comments in source files ( sketch-test2D.js and  sketch-test3D.js)