diff --git a/dev/janet/sandbox.janet b/dev/janet/sandbox.janet
index 644ccf7f..d8b047fd 100644
--- a/dev/janet/sandbox.janet
+++ b/dev/janet/sandbox.janet
@@ -16,4 +16,6 @@
 (comment
   (explode))
 
+# TODO: How can I ,ef then access other/sub in here.
+# I need to be able to require this module _and_ the things it requires.
 (+ (add 10 20) (other/sub 10 5))