diff --git a/ui (gen4)/Makefile b/ui (gen4)/Makefile
index 68c5a2fb..d6623224 100755
--- a/ui (gen4)/Makefile	
+++ b/ui (gen4)/Makefile	
@@ -97,7 +97,7 @@
 # 		- rpm
 # 		- ...
 # 	- cross-compiling support (???)
-# 	- cross-package with pre-build libs...
+# 	- cross-package with pre-built libs...
 # 	- nwjs???
 #
 #
diff --git a/ui (gen4)/lib/widget/browse2.html b/ui (gen4)/lib/widget/browse2.html
index f36720d0..9a7c7056 100755
--- a/ui (gen4)/lib/widget/browse2.html	
+++ b/ui (gen4)/lib/widget/browse2.html	
@@ -103,10 +103,10 @@ requirejs([
 
 	// XXX split this into several dialogues, show each and then combine...
 	dialog_1 = browser.Browser(function(make){
-		make([321, 321, 123])
+		make(['list', 'of', 'text'])
 		make.group(
-			make('a'),
-			'b')
+			make('group item 0'),
+			'group item 1 (bare)')
 		// XXX Q: should we show only one if multiple lines are in sequence???
 		make('---')
 		//make('---')
@@ -115,19 +115,19 @@ requirejs([
 		//make('e')
 		// embeded browser...
 		make(browser.Browser(function(make){
+			make('nested browser item 0')
 			make(1)
-			make(2)
 		}))
 		// basic nested list...
-		make.nest('A', [
+		make.nest('nested', [
 			make('moo', {disabled: true}),
 			2,
 			// XXX this is not supported by .map(..)...
-			make.nest('AB', browser.Browser(function(make){
+			make.nest('nested', browser.Browser(function(make){
 				make('ab')
 			})),
 		])
-		make('in between...')
+		make('in between two subtrees...')
 		// nested browser...
 		make.nest('B', 
 			browser.Browser(function(make){
diff --git a/ui (gen4)/lib/widget/browse2.js b/ui (gen4)/lib/widget/browse2.js
index ed22cdbd..46818557 100755
--- a/ui (gen4)/lib/widget/browse2.js	
+++ b/ui (gen4)/lib/widget/browse2.js	
@@ -136,7 +136,7 @@ Items.group = function(...items){
 		items[0]
 		: items
 	// replace the items with the group...
-	this.items.splice(this.items.length, 0, ...collectItems(this, items))
+	this.items.splice(this.items.length, 0, collectItems(this, items))
 	return this
 }
 
@@ -1194,6 +1194,9 @@ var BaseBrowserPrototype = {
 						// item not iterable -> skip...
 						(!iterateNonIterable && elem.noniterable) ?
 							[]
+						// group...
+						: elem instanceof Array ?
+							walk(path, elem)
 						// value is Browser (inline)...
 						: elem.value instanceof Browser ?
 							elem.value.map(func, 
@@ -1223,6 +1226,13 @@ var BaseBrowserPrototype = {
 		return walk(path, this.items) 
 	},
 
+
+
+	walk: function(func, options){
+	},
+
+
+
 	// Sublist map functions...
 	// NOTE: there are different from .map(..) in that instead of paths 
 	// 		func(..) will get indexes in the current browser...