diff --git a/docs/pid_tuning.md b/docs/pid_tuning.md
index 274e1f2..861c9b9 100644
--- a/docs/pid_tuning.md
+++ b/docs/pid_tuning.md
@@ -1,6 +1,8 @@
 Tuning PID Values
 =================
 
+This animation is worth a thousand words...
+
 ![Image](https://upload.wikimedia.org/wikipedia/commons/3/33/PID_Compensation_Animated.gif)
 
 ## The Goal