diff --git a/container.go b/container.go
index 9b3f12d..93dadc5 100644
--- a/container.go
+++ b/container.go
@@ -7,10 +7,12 @@ import "git.tebibyte.media/tomo/tomo/event"
 var _ tomo.ContentObject = new(Container)
 
 // Container is an object that can contain other objects. It can be used as a
-// primitive for building more complex layouts. It has two variants: an outer
-// container, and an inner container. The outer container has padding around
-// its edges, whereas the inner container does not. The container will have a
-// corresponding object role variation of either "outer" or "inner".
+// primitive for building more complex layouts. It has two main variants: an
+// outer container, and an inner container. The outer container has padding
+// around its edges, whereas the inner container does not. It also has a
+// "sunken" variation designed to hold a scrolled list of items. The container
+// will have a corresponding object role variation of either "outer", "inner",
+// or "sunken".
 type Container struct {
 	box tomo.ContainerBox
 }