diff --git a/ui (gen4)/lib/util.js b/ui (gen4)/lib/util.js
index 18b4414a..2ebc202c 100755
--- a/ui (gen4)/lib/util.js	
+++ b/ui (gen4)/lib/util.js	
@@ -127,9 +127,7 @@ Array.prototype.toMap = function(normalize){
 
 // Return an array with duplicate elements removed...
 //
-// NOTE: we are not using an Object as an index here as an Array can 
-// 		contain any type of item while Object keys can only be strings...
-// NOTE: this may not work on IE...
+// NOTE: order is preserved... 
 Array.prototype.unique = function(normalize){
 	return normalize ? 
 		[...new Map(this.map(function(e){ return [normalize(e), e] })).values()]