diff --git a/640.md b/640.md
index d788ae5..4b6e906 100644
--- a/640.md
+++ b/640.md
@@ -99,10 +99,14 @@ We'll start with the main command to stop the motor
 
 ##### off()
 
+The off command will switch off the motor and apply the brakes
+
 ``` python
 m1.off()
 ```
 
+##### setMotorSpeed()
+
 We can also stop the motor by using the second command and passing a speed of 0
 
 ``` python