diff --git a/actions.go b/actions.go
index 6b545c0..5d689d7 100644
--- a/actions.go
+++ b/actions.go
@@ -1,9 +1,14 @@
 package messenger
 
+// Action is used to determine what kind of message a webhook event is.
 type Action int
 
 const (
+	// UnknownAction means that the event was not able to be classified.
 	UnknownAction Action = iota - 1
+	// TextAction means that the event was a text message (May contain attachments).
 	TextAction
+	// DeliveryAction means that the event was a previous recipient reading their respective
+	// messages.
 	DeliveryAction
 )