diff --git a/canvas/canvas.go b/canvas/canvas.go
index 22ffe86..0866592 100644
--- a/canvas/canvas.go
+++ b/canvas/canvas.go
@@ -1,3 +1,5 @@
+// Canvas defines a standard interface for images that support drawing
+// primitives.
 package canvas
 
 import "image"
diff --git a/event/event.go b/event/event.go
index 8f70e66..3b4b0ed 100644
--- a/event/event.go
+++ b/event/event.go
@@ -1,3 +1,5 @@
+// Package event provides a system for broadcasting events to multiple event
+// handlers.
 package event
 
 // A cookie is returned when you add an event handler so you can remove it