From f6103ee8041a0d9e1ebfa3fa4c1675097d0dd94a Mon Sep 17 00:00:00 2001
From: Tony Garnock-Jones <tonygarnockjones@gmail.com>
Date: Tue, 19 Jun 2012 11:37:10 -0400
Subject: [PATCH] Note re: roles

---
 os2.rkt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/os2.rkt b/os2.rkt
index 356ec46..cb3cf17 100644
--- a/os2.rkt
+++ b/os2.rkt
@@ -246,6 +246,8 @@
 (define (topic-subscriber pattern #:virtual? [virtual? #f])
   (topic 'subscriber pattern virtual?))
 
+;; TODO: Ideally this would be extensible; roles like 'debug-listener,
+;; 'logger etc exist.
 (define (co-roles r)
   (case r
     [(publisher) '(subscriber)]