diff --git a/repository/Grafoscopio/GrafoscopioNotebook.class.st b/repository/Grafoscopio/GrafoscopioNotebook.class.st
index b4b1482..7834c88 100644
--- a/repository/Grafoscopio/GrafoscopioNotebook.class.st
+++ b/repository/Grafoscopio/GrafoscopioNotebook.class.st
@@ -67,22 +67,31 @@ GrafoscopioNotebook >> body: anObject [
 ]
 
 { #category : #operation }
-GrafoscopioNotebook >> changeBody: aNodeCollection [
-	| node |
-	node := aNodeCollection first.
+GrafoscopioNotebook >> changeBody: aNode [
 	self needRebuild: false.
 	tree needRebuild: false.
 			
-	body := self instantiate: node specModelClass new.
-	body content: node content.
-	body needRebuild: true.
-	body body whenTextChanged: [ :arg | node body: arg ].
-	header text: node header.
-			
+	body := self instantiate: aNode specModelClass new.
+	body content: aNode content.
+	body body class = TextModel 
+		ifTrue: [
+			body body whenTextChanged: [ :arg | aNode body: arg ]].
+	header text: aNode header.
+	body needRebuild: true.		
 	self buildWithSpecLayout: self class defaultSpec.
 
 ]
 
+{ #category : #operation }
+GrafoscopioNotebook >> demoteNode [
+	| currentNode |
+	currentNode := tree selectedItem content.
+	currentNode demote.
+	tree needRebuild: true.
+	tree roots: tree roots.
+	self buildWithSpecLayout: self class defaultSpec.
+]
+
 { #category : #persistence }
 GrafoscopioNotebook >> exportAsSton: aNotebook on: aFileStream [
 	| stonPrettyString |
@@ -115,16 +124,12 @@ GrafoscopioNotebook >> header: anObject [
 GrafoscopioNotebook >> initializePresenter [
 
 	tree whenSelectedItemsChanged: [ :arg | 
-		arg isEmpty ifFalse: [self changeBody: arg ]].	
+		arg isEmpty ifFalse: [self changeBody: tree selectedItem content ]].	
 	header whenTextChanged: [ :arg |
-		Transcript show: arg.
 		(tree selectedItem content header) = arg
 			ifFalse: [
 				(tree selectedItem) content header: arg.
-				tree roots: tree roots]].
-	body whenTextChanged: [:arg | 
-		Transcript show: arg
-		]
+				tree roots: tree roots]]
 ]
 
 { #category : #initialization }
@@ -147,9 +152,21 @@ GrafoscopioNotebook >> initializeWidgets [
 		add: body.
 ]
 
+{ #category : #operation }
+GrafoscopioNotebook >> moveNodeAfter [
+	| currentNode |
+	currentNode := tree selectedItem content.
+	currentNode moveAfter.
+	tree needRebuild: true.
+	tree roots: tree roots.
+	self buildWithSpecLayout: self class defaultSpec.
+]
+
 { #category : #operation }
 GrafoscopioNotebook >> moveNodeBefore [
-	tree selectedItem content moveAfter.
+	| currentNode |
+	currentNode := tree selectedItem content.
+	currentNode moveBefore.
 	tree needRebuild: true.
 	tree roots: tree roots.
 	self buildWithSpecLayout: self class defaultSpec.
@@ -419,6 +436,16 @@ GrafoscopioNotebook >> projectSubMenu [
 	
 ]
 
+{ #category : #operation }
+GrafoscopioNotebook >> promoteNode [
+	| currentNode |
+	currentNode := tree selectedItem content.
+	currentNode promote.
+	tree needRebuild: true.
+	tree roots: tree roots.
+	self buildWithSpecLayout: self class defaultSpec.
+]
+
 { #category : #operation }
 GrafoscopioNotebook >> removeNode [
 	| currentNode |