diff --git a/script.coffee b/script.coffee
index 09f67e95c..4692f2f20 100644
--- a/script.coffee
+++ b/script.coffee
@@ -877,6 +877,7 @@ qr =
 
 threadHiding =
   init: ->
+    # don't thread image controls
     node = $ 'form[name=delform] > *:not([id])'
     threadHiding.thread node