diff --git a/experiments/outline-editor/editor.css b/experiments/outline-editor/editor.css
index be08e27..28b6349 100755
--- a/experiments/outline-editor/editor.css
+++ b/experiments/outline-editor/editor.css
@@ -51,6 +51,11 @@
 	display: none;
 }
 
+/* XXX are we selecting subtrees or blocks??? */
+.editor [selected] {
+	background: silver;
+}
+
 .editor div:focus {
 	/*outline: solid 0.2em silver;*/
 	outline: none;
diff --git a/experiments/outline-editor/editor.js b/experiments/outline-editor/editor.js
index 0fe8401..b3cf538 100755
--- a/experiments/outline-editor/editor.js
+++ b/experiments/outline-editor/editor.js
@@ -101,7 +101,7 @@ var Outline = {
 			: node == 'editable' ?
 				[...this.dom.querySelectorAll('[tabindex]>textarea')] 
 			: node == 'selected' ?
-				[...this.dom.querySelectorAll('[tabindex].selected')]
+				[...this.dom.querySelectorAll('[tabindex][selected]')]
 			: node == 'top' ?
 				[...this.dom.children]
 					.filter(function(elem){ 
@@ -349,6 +349,16 @@ var Outline = {
 			var next = this.get('next')
 			this.get()?.remove() 
 			next?.focus() },
+
+		// select...
+		' ': function(evt){
+			if(this.get('edited') != null){
+				return }
+			evt.preventDefault()
+			var focused = this.get()
+			focused.getAttribute('selected') != null ?
+				focused.removeAttribute('selected')
+				: focused.setAttribute('selected', '') },
 	},
 
 	setup: function(dom){
diff --git a/experiments/outline-editor/index.html b/experiments/outline-editor/index.html
index 475aa7b..5ad782e 100755
--- a/experiments/outline-editor/index.html
+++ b/experiments/outline-editor/index.html
@@ -9,12 +9,13 @@
 <script src="editor.js"></script>
 <script>
 
+var editor
+
 var setup = function(){
 	window.editor = {
 		__proto__: Outline,
 	}.setup(
-		document.querySelector('.editor'))
-}
+		document.querySelector('.editor')) }
 
 </script>
 </head>
@@ -58,7 +59,10 @@ TODO:
 - <s>shift subtree up/down</s>
 - <s>create node</s>
 - <s>edit node</s>
-- undo delete node
+- undo 
+  - delete node
+  - indent/deindent
+  - edit node
 - copy/paste nodes/trees
 - shifting nodes up/down
 - multiple node selection