diff --git a/planning/releases/2.0.0.md b/planning/releases/2.0.0.md
index 0b26d8b..9d98b06 100644
--- a/planning/releases/2.0.0.md
+++ b/planning/releases/2.0.0.md
@@ -22,7 +22,8 @@ dependencies.
   via `web.WebSocketResponse().can_prepare(request).ok` and opens a
   `Scope.REQUEST` child container for each HTTP request or a `Scope.SESSION`
   child for each WebSocket connection, injecting the connection as context and
-  closing the child when the connection ends. Per-message work inside a
+  closing the child when the connection ends. A handler reads its child
+  container with `fetch_request_container(request)`. Per-message work inside a
   WebSocket handler can open a nested `Scope.REQUEST` child of the SESSION
   container.
 - **`FromDI` + `@inject`.** Mark a handler parameter with