Lab7.markdown

@@ -80,12 +80,14 @@ Change the program so that the car drives backwards a little when all the three
 We wish to implement a behavior that handles a situation where the robot is close to a surface in the directions front, left and right and makes a u-turn and drives in the opposite direction. To do this we use the following code (Fig.4):
 
 ```
+// Back up and turn 180 degrees. 
             if(leftDistance < stopThreshold && rightDistance < stopThreshold && frontDistance < stopThreshold ){
             	
-            	//
+            	// back up
             	car.backward(power, power);
             	Delay.msDelay(ms);
             	 
+            	// Turn 180 degrees
             	car.forward(power, 0);
             	Delay.msDelay(2000);
             	car.backward(0, power);