diff --git a/src/MiniDocs/GrafoscopioNode.class.st b/src/MiniDocs/GrafoscopioNode.class.st
index 7e9274b..e248ab0 100644
--- a/src/MiniDocs/GrafoscopioNode.class.st
+++ b/src/MiniDocs/GrafoscopioNode.class.st
@@ -17,11 +17,26 @@ Class {
 	#category : #MiniDocs
 }
 
+{ #category : #accessing }
+GrafoscopioNode >> ancestors [
+	"I return a collection of all the nodes wich are ancestors of the receiver node"
+	| currentNode ancestors |
+	
+	currentNode := self.
+	ancestors := OrderedCollection new.
+	[ currentNode parent notNil and: [ currentNode level > 0 ] ]
+		whileTrue: [ 
+			ancestors add: currentNode parent.
+			currentNode := currentNode parent].
+	ancestors := ancestors reversed.
+   ^ ancestors
+]
+
 { #category : #accessing }
 GrafoscopioNode >> asLePage [
 	| page |
 	page := LePage new
-		title: 'Grafoscopio Notebook (imported)'.
+		initializeTitle: 'Grafoscopio Notebook (imported)'.
 	self nodesInPreorder allButFirst do: [:node | 
 		page addSnippet: node asSnippet .
 	].		
@@ -119,6 +134,16 @@ GrafoscopioNode >> header: anObject [
 	header := anObject
 ]
 
+{ #category : #accessing }
+GrafoscopioNode >> latestEditionDate [
+	| latest |
+	
+	latest := self nodesWithEditionDates first edited.
+	self nodesWithEditionDates do: [:node |
+		node edited >= latest ifTrue: [ latest := node edited ] ].
+	^ latest
+]
+
 { #category : #accessing }
 GrafoscopioNode >> level [
 	^ level
@@ -171,12 +196,31 @@ GrafoscopioNode >> parent: anObject [
 
 { #category : #accessing }
 GrafoscopioNode >> populateTimestamps [
-
+	| adhocCreationMarker adhocEditionMarker |
+	adhocCreationMarker := 'adhoc creation timestamp'.
+	adhocEditionMarker := 'adhoc edition timestamp'.
 	(self nodesInPreorder size = self nodesWithCreationDates size
 		and: [ self nodesInPreorder size = self nodesWithEditionDates size ])
 		ifTrue: [ ^ self nodesInPreorder ].
-	^ { self nodesWithCreationDates.
-		self nodesWithEditionDates}
+	self nodesInPreorder allButFirst doWithIndex: [:node :i |
+		node created ifNil: [
+			node created: self earliestCreationDate + i.
+			node tags add: adhocCreationMarker.
+		].
+		node edited ifNil: [
+			node edited: self earliestCreationDate + i + 1.
+			node tags add: 'adhoc edition timestamp'
+		].
+	].
+	self root created ifNil: [
+		self root created: self earliestCreationDate - 1.
+		self root tags add: adhocCreationMarker.
+	].
+	self root edited ifNil: [
+		self root edited: self latestEditionDate.
+		self root tags add: adhocEditionMarker.
+	].
+	^ self nodesInPreorder
 ]
 
 { #category : #accessing }
@@ -186,6 +230,12 @@ GrafoscopioNode >> printOn: aStream [
 		nextPutAll: '( ', self header, ' )'
 ]
 
+{ #category : #accessing }
+GrafoscopioNode >> root [
+	self level = 0 ifTrue: [ ^ self ].
+	^ self ancestors first.
+]
+
 { #category : #accessing }
 GrafoscopioNode >> selected [
 	^ selected