diff --git a/ui (gen4)/ui.js b/ui (gen4)/ui.js
index 98ecfca5..ef832523 100755
--- a/ui (gen4)/ui.js	
+++ b/ui (gen4)/ui.js	
@@ -180,6 +180,7 @@ $(function(){
 	window.a = testing.setupActions()
 
 	// setup features...
+	/*
 	// XXX I do not fully understand it yet, but PartialRibbons must be 
 	// 		setup BEFORE AlignRibbonsTo*, otherwise the later will break
 	// 		on shifting an image to a new ribbon...
@@ -194,6 +195,23 @@ $(function(){
 	viewer.ShiftAnimation.setup(a)
 	viewer.BoundsIndicators.setup(a)
 	viewer.CurrentImageIndicator.setup(a)
+	*/
+
+	viewer.Features.setup(a, [
+		// XXX I do not fully understand it yet, but PartialRibbons must be 
+		// 		setup BEFORE AlignRibbonsTo*, otherwise the later will break
+		// 		on shifting an image to a new ribbon...
+		// 			To reproduce:
+		// 				- setupe RibbonAlignToFirst first
+		// 				- go to top ribbon
+		// 				- shift image up
+		'ui-partial-ribbons',
+		'ui-ribbon-align-to-order',
+		'ui-single-image-view',
+		'ui-animation',
+		'ui-bounds-indicators',
+		'ui-current-image-indicator',
+	])
 
 	// this publishes all the actions...
 	//module.GLOBAL_KEYBOARD.__proto__ = a
diff --git a/ui (gen4)/viewer.js b/ui (gen4)/viewer.js
index d62c6229..62647469 100755
--- a/ui (gen4)/viewer.js	
+++ b/ui (gen4)/viewer.js	
@@ -916,10 +916,53 @@ var Feature =
 module.Feature =
 function Feature(obj){
 	obj.__proto__ = FeatureProto
+
+	// XXX not sure about this...
+	Features[obj.tag] = obj
+
 	return obj
 }
 
 
+// XXX experimental...
+// 		...not sure if the global feature set is a good idea...
+// XXX might be good to track and automate:
+// 		- priority/precedence
+// 		- exclusivity groups -- i.e. only one from a group can be on.
+// 		- dependency and dependency precedence
+// 		- documentation and control ui
+// 			- title
+// 			- doc
+// 			- ...
+var FeatureSet =
+module.FeatureSet = {
+	setup: function(obj, lst){
+		lst = lst.constructor !== Array ? [lst] : lst
+		var that = this
+		lst.forEach(function(n){
+			if(that[n] != null){
+				console.log('Setting up feature:', n)
+				that[n].setup(obj)
+			}
+		})
+	},
+	remove: function(obj, lst){
+		lst = lst.constructor !== Array ? [lst] : lst
+		var that = this
+		lst.forEach(function(n){
+			if(that[n] != null){
+				console.log('Removing feature:', n)
+				that[n].remove(obj)
+			}
+		})
+	},
+}
+
+
+var Features =
+module.Features = Object.create(FeatureSet)
+
+
 
 //---------------------------------------------------------------------
 // NOTE: this is split out to an action so as to enable ui elements to