diff --git a/Viewer/css/experimenting.css b/Viewer/css/experimenting.css
index 99aa944b..9bd0f343 100755
--- a/Viewer/css/experimenting.css
+++ b/Viewer/css/experimenting.css
@@ -323,7 +323,7 @@ body {
 	font-style: italic;
 }
 .browse-widget.tail-action .list .item:last-child .button {
-	display: none;
+	/*display: none;*/
 }
 
 /* do not show top border if after another action or separator... */
diff --git a/Viewer/features/filesystem.js b/Viewer/features/filesystem.js
index ba0bb811..7698b80c 100755
--- a/Viewer/features/filesystem.js
+++ b/Viewer/features/filesystem.js
@@ -3001,6 +3001,8 @@ var FileSystemWriterUIActions = actions.Actions({
 			.exportDialog(mode)
 			.exportDialog(settings)
 
+
+		NOTE: when saving a preset the dialog will trigger a 'save-preset' event.
 		`,
 		widgets.makeUIDialog(function(mode){
 			var that = this
@@ -3075,8 +3077,23 @@ var FileSystemWriterUIActions = actions.Actions({
 							var mode = 
 								that.config['export-dialog-modes'][settings['mode']]
 							that[mode.action](settings)
-							dialog.close()
-						},
+							dialog.close() },
+						buttons: [
+							['<i><small>Save preset</small></i>',
+								function(_, elem){
+									that.exportPresetSave() 
+
+									// button press feedback...
+									var e = elem.find('.button small')
+									var text = e.text()
+									var reset = function(){
+										e.text(text) }
+									e.text('Saved.')
+									e.one('mouseout', reset)
+									setTimeout(reset, 2000)
+
+									make.dialog.trigger('save-preset')
+								}] ],
 					}) 
 
 				make.done()
@@ -3100,6 +3117,7 @@ var FileSystemWriterUIActions = actions.Actions({
 	// XXX add a 'name' field to the exportDialog(..)???
 	// XXX button icons... 
 	// XXX button shortcuts...
+	// XXX handle presets with repeating titles...
 	exportPresets: ['- File/Export history...',
 		widgets.makeUIDialog(function(mode){
 			var that = this
@@ -3109,29 +3127,32 @@ var FileSystemWriterUIActions = actions.Actions({
 			var getName = function(preset){
 				return preset.name
 					|| `${ preset.mode }: "${ preset.path }"` }
+			var buildIndex = function(presets){
+				var index
+				return [
+					// index...
+					(index = presets
+						.reduce(function(res, e, i){
+							res[getName(e)] = i 
+							return res }, {})),
+					// keys...
+					Object.keys(index), ] }
+			var getPreset = function(title, presets, index){
+				return presets[index[title]] }
 
 			// presets...
 			var presets = that.config['export-presets'] || []
-			var index = presets
-				.reduce(function(res, e, i){
-					res[getName(e)] = i 
-					return res }, {})
-			var keys = Object.keys(index)
+			var [index, keys] = buildIndex(presets)
 
 			// history...
 			// XXX
 			var history = []
-			var history_index = {}
-			var history_keys = Object.keys(history_index)
-
-			var getPreset = function(title, presets, index){
-				return presets[index[title]] }
+			var [history_index, history_keys] = buildIndex(history)
 
 			return browse.makeLister(null, function(path, make){
 				// preset list...
-				keys.length == 0 ?
-					make.Empty('No presets...')
-					: make.EditableList(keys, {
+				keys.length > 0
+					&& make.EditableList(keys, {
 						list_id: 'presets',
 						sortable: true,
 						update_merge: 'live',
@@ -3140,7 +3161,7 @@ var FileSystemWriterUIActions = actions.Actions({
 						allow_empty: true,
 						itemedit: function(evt, from, to){
 							var preset = getPreset(from, presets, index)
-							// clear...
+							// reset...
 							if(to.trim() == ''){
 								delete preset.name
 								to = keys[keys.indexOf(from)] = getName(preset)
@@ -3158,18 +3179,32 @@ var FileSystemWriterUIActions = actions.Actions({
 								function(){
 									make.dialog.select(to) }) },
 						buttons: [
-							['<small>edit</small>', function(title){
-								var preset = getPreset(title, presets, index)
-								that.exportDialog(preset)
-						   			.close(function(){
-										var n = getName(preset)
-										// update the list if name is affected...
-										if(n != title){
-											keys[keys.indexOf(title)] = n
-											index[n] = index[title]
-											delete index[title]
-											make.dialog.select(n) 
-											make.dialog.update() } })}],
+							// edit...
+							['<small class="show-on-hover">edit</small>', 
+								function(title){
+									var preset = getPreset(title, presets, index)
+									that.exportDialog(preset)
+										.close(function(){
+											var n = getName(preset)
+											// update the list if name is affected...
+											if(n != title){
+												keys[keys.indexOf(title)] = n
+												index[n] = index[title]
+												delete index[title]
+												make.dialog.select(n) 
+												make.dialog.update() } })}],
+							// duplicate...
+							['<span class="show-on-hover">&#x274F;</span>', 
+								function(title){
+									var preset = JSON.parse(
+										JSON.stringify(
+											getPreset(title, presets, index) ))
+									preset.name = title + ' (copy)'
+									// place preset in list...
+									var i = index[preset.name] = index[title]+1
+									presets.splice(i, 0, preset)
+									keys.splice(keys.indexOf(title)+1, 0, preset.name)
+									make.dialog.update() }],
 							['&diams;', 'TO_TOP'],
 							'REMOVE'],
 						// export...
@@ -3188,6 +3223,14 @@ var FileSystemWriterUIActions = actions.Actions({
 				make('E$xport...', {
 					open: function(){
 						that.exportDialog()
+							// new preset saved...
+							.on('save-preset', function(){
+								var [idx, k] = buildIndex(presets)
+								index = idx
+								// NOTE: keys must be updated in-place...
+								keys.splice(0, keys.length, ...k)
+								make.dialog.update() })
+							// close dialog on export...
 							.close(function(evt, reason){
 								reason != 'reject'
 									&& make.dialog.close() }) }, })
@@ -3196,16 +3239,17 @@ var FileSystemWriterUIActions = actions.Actions({
 				make.Separator()
 				history.length == 0 ?
 					make.Empty('No export history...')
-					: ake.EditableList(history, {
+					: ake.EditableList(history_keys, {
 						list_id: 'history',
 						sortable: false,
 						new_item: false,
 						editable_items: false,
 						buttons: [
 							// to preset...
-							['P', function(){
-								// XXX
-							}],
+							['<small class="show-on-hover">save</small>', 
+								 function(){
+									// XXX
+								}],
 							'REMOVE',
 						],
 						// XXX export...
@@ -3220,7 +3264,17 @@ var FileSystemWriterUIActions = actions.Actions({
 				this.keyboard.on('E', function(){
 					console.log('!!!!!!!!!!!!!', that.selected)
 				})
-			}) })],
+			})
+			.close(function(){
+				// update preset order and count...
+				that.config['export-presets'] = keys
+					.map(function(e){
+						return getPreset(e, presets, index) })
+				// handle history delete...
+				history.length != that.config['export-history']
+					&& that.config['export-history'] = history_keys
+						.map(function(e){
+							return getPreset(e, history, history_index) }) }) })],
 
 	// XXX these do note need the ui -- move to a separate feature...
 	// XXX these are essentially the same as the history API, make a 
@@ -3235,7 +3289,7 @@ var FileSystemWriterUIActions = actions.Actions({
 				&& (this.config['export-presets'] = 
 						this.config['export-presets'] 
 						|| [])
-					.push(settings) }],
+					.push(JSON.parse(JSON.stringify( settings ))) }],
 
 	// XXX need a way to reference a preset...
 	exportPresetDelete: ['- File/', 
@@ -3255,7 +3309,7 @@ var FileSystemWriterUIActions = actions.Actions({
 			// add...
 			// XXX need to check item uniqueness...
 			settings 
-				&& history.push(settings) 
+				&& history.push(JSON.parse(JSON.stringify( settings )))
 			// trim the history...
 			history.length > l
 				&& history.splice(0, history.length - l) }],
diff --git a/Viewer/lib/widget/browse.js b/Viewer/lib/widget/browse.js
index d964b277..f555605f 100755
--- a/Viewer/lib/widget/browse.js
+++ b/Viewer/lib/widget/browse.js
@@ -102,8 +102,7 @@ function(msg, options){
 		: true
 	options.cls = (options.cls || '') + ' empty-msg'
 	msg = msg || options.message || 'Empty...'
-	return this(msg, options)
-}
+	return this(msg, options) }
 
 
 // NOTE: this is the same as make('---'[, options])
@@ -141,8 +140,7 @@ Items.Action =
 function(text, options){
 	options = Object.create(options || {})
 	options.cls = (options.cls || '') + ' action'
-	return this(text, options)
-}
+	return this(text, options) }
 
 // Action requiring confirmation...
 //
@@ -205,10 +203,7 @@ function(text, options){
 
 			// confirmed...
 			} else {
-				callback && callback()
-			}
-		})
-}
+				callback && callback() } }) }
 
 // Item with auto selected text on select...
 //
@@ -245,8 +240,7 @@ function(text, options){
 
 			text.selectText()
 		})
-	return elem
-}
+	return elem }
 
 // Editable item or it's part...
 //
@@ -385,8 +379,7 @@ function(text, options){
 		&& elem
 			.on(stop_propagation, function(e){ e.stopPropagation() })
 
-	return elem
-}
+	return elem }
 
 
 
@@ -419,8 +412,7 @@ function(list){
 		.addClass('item-group')
 		.appendTo($(res).parent())
 		.append($(res))
-	return group
-}
+	return group }
 
 
 // List of elements...
@@ -516,19 +508,14 @@ function(data, options){
 
 				// no match -- restore text...
 				} else {
-					txt = k
-				}
-			}
-		})
+					txt = k } } })
 
 		if(opts.disabled && opts.disabled instanceof Array){
-			opts.disabled = opts.disabled.indexOf(txt || k) >= 0
-		}
+			opts.disabled = opts.disabled.indexOf(txt || k) >= 0 }
 
 		if((opts.disabled && opts.skipDisabledItems) 
 				|| (opts.hidden && opts.skipHiddenItems)){
-			return
-		}
+			return }
 
 		var elem = make(txt || k, opts)
 
@@ -538,13 +525,11 @@ function(data, options){
 		opts.each
 			&& opts.each.call(elem, txt || k)
 
-		res.push(elem[0])
-	})
+		res.push(elem[0]) })
 
 	return options.groupList ?
 		make.Group(res).children()
-		: $(res)
-}
+		: $(res) }
 
 
 // Editable list of elements...
@@ -1296,23 +1281,20 @@ function(list, pins, options){
 
 				// unpin...
 				} else {
-					pins.splice(pins.indexOf(p), 1)
-				}
+					pins.splice(pins.indexOf(p), 1) }
 
 				// XXX this is slow...
 				that.dialog
 					.update()
 					.then(function(){
-						that.dialog.trigger('pin_button', p, cur)
-					})
+						that.dialog.trigger('pin_button', p, cur) })
 			}]
 	;[buttons, pins_buttons]
 		.forEach(function(b){
 			var i = b.indexOf('PIN')
 			i < 0 ? 
 				b.push(pin)
-				: (b[i] = pin) 
-		})
+				: (b[i] = pin) })
 	options.isItemHidden = function(e){ return pins.indexOf(e) >= 0 }
 	options.skipHiddenItems = options.skipHiddenItems !== false ? true : false
 
@@ -1333,8 +1315,7 @@ function(list, pins, options){
 	if(!sortable){
 		 pins_options.sort = options.sort instanceof Function ? 
 			options.sort
-			: pins.sortAs(dialog.__list[id])
-	}
+			: pins.sortAs(dialog.__list[id]) }
 
 	//---------------------------------------------- build the list ---
 	var res = this.EditableList(pins, pins_options)
@@ -1350,8 +1331,7 @@ function(list, pins, options){
 			options)
 		.toArray())
 
-	return $(res)
-}
+	return $(res) }
 
 
 
@@ -1383,10 +1363,7 @@ Buttons.markForRemoval = function(list, html){
 			} else {
 				var i = list.indexOf(p)
 				i >= 0
-					&& list.splice(i, 1)
-			}
-		}]
-}
+					&& list.splice(i, 1) } }] }
 
 
 
@@ -1688,6 +1665,7 @@ var BrowserPrototype = {
 			'open',
 			'menu',
 			'update',
+			'close',
 		],
 
 		// Shorthand elements...
@@ -2252,6 +2230,7 @@ var BrowserPrototype = {
 	//		open: <handler>,
 	//		menu: <handler>,
 	//		update: <handler>,
+	//		close: <handler>,
 	//
 	//		// event handlers...
 	//		events: {