diff --git a/repository/Grafoscopio/GrafoscopioBrowser.class.st b/repository/Grafoscopio/GrafoscopioBrowser.class.st
index cf5b29b..80cb4b4 100644
--- a/repository/Grafoscopio/GrafoscopioBrowser.class.st
+++ b/repository/Grafoscopio/GrafoscopioBrowser.class.st
@@ -64,10 +64,12 @@ GrafoscopioBrowser class >> docDataTutorial [
 
 { #category : #updating }
 GrafoscopioBrowser class >> docDownloadFor: aDocumentType [
-	"I download the interactive documentation in STON format, according to the document time which can be: 'tutorial' or 'manual'.
-	If a the documentation is already present in the system I made a temporal backup and download a new copy"
+	"I download the interactive documentation in STON format, according to the document 
+	type which can be: 'tutorial' or 'manual'.
+	If a the documentation is already present in the system I made a temporal backup and 
+	download a new copy"
 
-	| docInfo client rootFolder localDoc temporalBackup remoteDoc |
+	| docInfo rootFolder localDoc temporalBackup remoteDoc |
 	
 	(aDocumentType = 'tutorial') ifTrue: [ docInfo := self docDataTutorial ].
 	(aDocumentType = 'manual') ifTrue: [ docInfo := self docDataManual ].
diff --git a/repository/Grafoscopio/GrafoscopioNotebook.class.st b/repository/Grafoscopio/GrafoscopioNotebook.class.st
index 7658ddd..8276c85 100644
--- a/repository/Grafoscopio/GrafoscopioNotebook.class.st
+++ b/repository/Grafoscopio/GrafoscopioNotebook.class.st
@@ -73,7 +73,7 @@ GrafoscopioNotebook >> initializePresenter [
 	
 	header whenTextChanged: [ :arg |
 		(tree selectedItem) content header: header text.
-		tree updateTree]
+		"tree updateTree"]
 ]
 
 { #category : #initialization }
@@ -85,7 +85,7 @@ GrafoscopioNotebook >> initializeWidgets [
 	header := self newText.
 	
 	body disable.
-	body text: 'Seleciona un nodo a la izquierda'.
+	body text: '<-- Seleciona un nodo a la izquierda'.
 	
 	tree childrenBlock: [:node | node children];
 		displayBlock: [:node | node title ].
@@ -98,6 +98,19 @@ GrafoscopioNotebook >> notebookContent: aTree [
 	
 ]
 
+{ #category : #persistence }
+GrafoscopioNotebook >> openFromFile: aFileName [
+"I open a notebook from a file named aFileName containing a grafoscopio tree"
+
+	| root nb |
+							
+	root := ((STON fromString: aFileName contents) at: 1) parent.
+	nb := self class new.
+	nb title: aFileName basenameWithIndicator.
+	nb notebookContent: root.
+	^ nb openWithSpec.
+]
+
 { #category : #accessing }
 GrafoscopioNotebook >> tree [
 	^ tree