diff --git a/docs/Readme.md b/docs/Readme.md
index 1109a6c2..3410cfe8 100644
--- a/docs/Readme.md
+++ b/docs/Readme.md
@@ -16,10 +16,11 @@
 mlagents-learn config/ppo/Catching.yaml --env=./Builds/CarCatching/CarCatching.x86_64 --run-id=v8.0.0 --width=2000 --height=1000
 
 ```
-
+* If you run the above command for many times, please change the '--run-id=v8.0.0' to other run-ids.
 
 # Note
-Below the seperating line are the original README of Unity MLAgents Toolkit.
+* Those files and directories whose names begin with "tensorboard_" are python scripts used to draw the images in the paper's experiment section.
+* Below the seperating line are the original README of Unity MLAgents Toolkit.
 
 ---