diff --git a/ui (gen4)/features/ui.js b/ui (gen4)/features/ui.js
index 19ff62ad..b068c58c 100755
--- a/ui (gen4)/features/ui.js	
+++ b/ui (gen4)/features/ui.js	
@@ -1350,6 +1350,7 @@ var ControlActions = actions.Actions({
 		})],
 
 	// XXX do not do anything on viewer focus... (???)
+	// XXX depends on .ribbons...
 	toggleImageClickHandling: ['Interface/Image click handling',
 		toggler.Toggler(null,
 			function(_, new_state){ 
@@ -1478,6 +1479,7 @@ var ControlActions = actions.Actions({
 			})],
 
 	// XXX revise name...
+	// XXX depends on .ribbons...
 	makeRibbonVisible: ['- Interface/Make ribbon visible if it is off screen',
 		function(target, center_off_screen){
 			var r = this.ribbons.getRibbon(target)
@@ -1552,6 +1554,7 @@ var ControlActions = actions.Actions({
 	// XXX this is really slow/buggy on IE... 
 	// 		...found the problem, need to disable transitions for this 
 	// 		to work semi smoothly...
+	// XXX depends on .ribbons...
 	toggleRibbonPanHandling: ['Interface/Ribbon pan handling',
 		toggler.Toggler(null,
 			function(_, new_state){ 
@@ -1789,6 +1792,7 @@ var ControlActions = actions.Actions({
 	// 		...detect via cursor within the vertical band of the ribbon...
 	// XXX BUG?: acceleration seems to be increasing with time...
 	// XXX add a "ribbonWheeling" ( ;) ) event a-la ribbonPanning...
+	// XXX depends on .ribbons...
 	toggleMouseWheelHandling: ['Interface/Mouse wheel handling',
 		toggler.Toggler(null,
 			function(_, new_state){
@@ -1900,6 +1904,7 @@ var ControlActions = actions.Actions({
 
 	// XXX make the enable handling check a bit more general...
 	// 		...allow ui features to control this...
+	// XXX depends on .ribbons...
 	toggleSwipeHandling: ['Interface/Swipe handling',
 		toggler.Toggler(null,
 			function(_, state){