diff --git a/ui (gen4)/features/base.js b/ui (gen4)/features/base.js
index 28864bf6..c2297395 100755
--- a/ui (gen4)/features/base.js	
+++ b/ui (gen4)/features/base.js	
@@ -174,8 +174,10 @@ actions.Actions({
 		}],
 	clear: ['File|Interface/Clear viewer',
 		function(){
-			delete this.data
-			delete this.images
+			//delete this.data
+			//delete this.images
+			this.data = null
+			this.images = null
 		}],
 
 	// NOTE: for complete isolation it is best to completely copy the 
@@ -1069,7 +1071,7 @@ module.Journal = core.ImageGridFeatures.Feature({
 			function(data){
 				this.journal = (this.hasOwnProperty('journal') 
 						|| this.journal) ? 
-					this.journal 
+					this.journal || []
 					: []
 				this.journal.push(data)
 			}],
diff --git a/ui (gen4)/features/core.js b/ui (gen4)/features/core.js
index 15e536be..dbbce014 100755
--- a/ui (gen4)/features/core.js	
+++ b/ui (gen4)/features/core.js	
@@ -60,16 +60,16 @@ function(attr, states, a, b){
 
 // Root ImageGrid.viewer object constructor...
 //
-var ImageGrid = object.makeConstructor('ImageGrid', actions.MetaActions)
+var ImageGrid = 
+module.ImageGrid = object.makeConstructor('ImageGrid', actions.MetaActions)
 
 // Root ImageGrid feature set....
 var ImageGridFeatures =
 module.ImageGridFeatures = new features.FeatureSet()
 
 // setup base instance constructor...
-ImageGridFeatures.__actions__ = function(){
-	return actions.Actions(ImageGrid())
-}
+ImageGridFeatures.__actions__ = 
+	function(){ return actions.Actions(ImageGrid()) }
 
 
 
diff --git a/ui (gen4)/ui.js b/ui (gen4)/ui.js
index 35801951..c0e7e138 100755
--- a/ui (gen4)/ui.js	
+++ b/ui (gen4)/ui.js	
@@ -54,51 +54,53 @@ $(function(){
 
 
 	// setup actions...
-	window.a = viewer.ImageGridFeatures
-		.setup([
-			'viewer-testing',
+	window.ig = 
+	window.ImageGrid = 
+		viewer.ImageGridFeatures
+			.setup([
+				'viewer-testing',
 
-			'demo',
+				'demo',
 
-			// XXX this is not for production...
-			'experiments',
-		])
+				// XXX this is not for production...
+				'experiments',
+			])
 
 
 	// used to switch experimental actions on (set to true) or off (unset or false)...
-	//a.experimental = true
+	//ig.experimental = true
 
 
 	// report stuff...
 	// XXX we also have .conflicts and .missing
-	a.features.excluded.length > 0 
+	ig.features.excluded.length > 0 
 		&& console.warn('Features excluded (%d):',
-			a.features.excluded.length, 
-			a.features.excluded)
-	a.features.disabled.length > 0 
+			ig.features.excluded.length, 
+			ig.features.excluded)
+	ig.features.disabled.length > 0 
 		&& console.log('Features disabled (%d):',
-			a.features.disabled.length, 
-			a.features.disabled)
+			ig.features.disabled.length, 
+			ig.features.disabled)
 	console.log('Features not applicable (%d):', 
-		a.features.unapplicable.length, 
-		a.features.unapplicable)
+		ig.features.unapplicable.length, 
+		ig.features.unapplicable)
 	console.log('Features loaded (%d):',
-		a.features.features.length, 
-		a.features.features)
+		ig.features.features.length, 
+		ig.features.features)
 
-	a.logger = a.logger || {emit: function(e, v){ console.log('    ', e, v) }}
+	ig.logger = ig.logger || {emit: function(e, v){ console.log('    ', e, v) }}
 
 
 	// setup the viewer...
-	a
+	ig
 		.load({ viewer: $('.viewer') })
 		.start()
 
 
 	// load some testing data if nothing else loaded...
-	if(!a.url_history || Object.keys(a.url_history).length == 0){
+	if(!ig.url_history || Object.keys(ig.url_history).length == 0){
 		// NOTE: we can (and do) load this in parts...
-		a.loadDemoIndex()
+		ig.loadDemoIndex()
 
 			// this is needed when loading legacy sources that do not have tags
 			// synced...