diff --git a/communication.md b/communication.md
index b9965f6..85b2dd2 100644
--- a/communication.md
+++ b/communication.md
@@ -10,9 +10,10 @@ The following table describes the bit pattern for a successful communication wit
 
 ## Message Types
 
-| 0   | Data            |
-| --- | --------------- |
-| 1   | Control         |
-| 2   | Status Messages |
-| 3   | Confirmation    |
-| 4   | Debug           |
+| Code | Purpose         |
+| ---- | --------------- |
+| 0    | Data            |
+| 1    | Control         |
+| 2    | Status Messages |
+| 3    | Confirmation    |
+| 4    | Debug           |