diff --git a/ui (gen4)/features/collections.js b/ui (gen4)/features/collections.js
index 43a4ef9a..cf6ebe84 100755
--- a/ui (gen4)/features/collections.js	
+++ b/ui (gen4)/features/collections.js	
@@ -56,6 +56,7 @@ var widgets = require('features/ui-widgets')
 // 		- horizontal only
 // 		- both
 // XXX external / linked collections (.location)...
+// XXX merge collections from multiple indexes -- can we avoid extending the format???
 //
 
 // XXX should these be in .config???