diff --git a/os-userland-example.rkt b/os-userland-example.rkt
index 8aeb91d..abcb51b 100644
--- a/os-userland-example.rkt
+++ b/os-userland-example.rkt
@@ -65,7 +65,8 @@
 	   (send `(display "HI\n"))
 	   (rpc `(sleep 1000))
 	   (send `(display "THERE\n"))))
-  (poll)
+  (poll) ;; Wait for drivers to become ready (!)
+	 ;; The Right Way to do this is to have presence integrated with subscription
   (send `(display "Hello! Enter your name:\n"))
   (define name (rpc 'read-line))
   (send `(display "Hello, "))