diff --git a/src/Toplo-Serialization-Stash/TToCheckable.extension.st b/src/Toplo-Serialization-Stash/TToCheckable.extension.st
index 947f1e9..541cbb1 100644
--- a/src/Toplo-Serialization-Stash/TToCheckable.extension.st
+++ b/src/Toplo-Serialization-Stash/TToCheckable.extension.st
@@ -5,9 +5,12 @@ TToCheckable >> stashAccessorsForTToCheckable [
 
 	<stashAccessors>
 	| settersAndGetters |
+	self class == ToTab ifTrue: [ ^ {  } ].
 	self isCheckable ifFalse: [ ^ {  } ].
+	
 	settersAndGetters := OrderedCollection new.
-	settersAndGetters add: #initializeCheckable onlySetOnStash.
+	
+	self class == ToToggleButton ifFalse: [ settersAndGetters add: #initializeCheckable onlySetOnStash ].
 	self checked ifTrue: [ settersAndGetters add: #checked ].
 	self group ifNotNil: [ settersAndGetters add: #group ].
 	^ settersAndGetters
diff --git a/src/Toplo-Serialization-Stash/ToTab.extension.st b/src/Toplo-Serialization-Stash/ToTab.extension.st
new file mode 100644
index 0000000..11a9519
--- /dev/null
+++ b/src/Toplo-Serialization-Stash/ToTab.extension.st
@@ -0,0 +1,32 @@
+Extension { #name : #ToTab }
+
+{ #category : #'*Toplo-Serialization-Stash' }
+ToTab >> firstElement [
+
+	| first |
+	first := self children first.
+	first == filler ifTrue: [ ^ nil ].
+	^ first
+]
+
+{ #category : #'*Toplo-Serialization-Stash' }
+ToTab >> firstElement: anElement [
+
+	anElement ifNil: [ ^ self ].
+	self addChild: anElement at: 1
+]
+
+{ #category : #'*Toplo-Serialization-Stash' }
+ToTab >> stashElement [
+
+	<stashAccessors>
+	self firstElement ifNil: [ ^ {  } ].
+	^ { (#firstElement: -> #firstElement) }
+]
+
+{ #category : #'*Toplo-Serialization-Stash' }
+ToTab >> stashPaneBuilder [
+
+	<stashAccessors>
+	^ { #paneBuilder }
+]
diff --git a/src/Toplo-Serialization-Stash/ToTabPane.extension.st b/src/Toplo-Serialization-Stash/ToTabPane.extension.st
new file mode 100644
index 0000000..e46b04d
--- /dev/null
+++ b/src/Toplo-Serialization-Stash/ToTabPane.extension.st
@@ -0,0 +1,14 @@
+Extension { #name : #ToTabPane }
+
+{ #category : #'*Toplo-Serialization-Stash' }
+ToTabPane >> stashAddAllTabs: aCollectionOfTabs [
+
+	aCollectionOfTabs do: [ :each | self addTab: each ].
+]
+
+{ #category : #'*Toplo-Serialization-Stash' }
+ToTabPane >> stashTabs [
+
+	<stashAccessors>
+	^ { #stashAddAllTabs: -> #tabs }
+]
diff --git a/src/Toplo-Serialization-Tests/ToSerializerTest.class.st b/src/Toplo-Serialization-Tests/ToSerializerTest.class.st
index 97d317e..8d6a50c 100644
--- a/src/Toplo-Serialization-Tests/ToSerializerTest.class.st
+++ b/src/Toplo-Serialization-Tests/ToSerializerTest.class.st
@@ -353,6 +353,119 @@ ToSerializerTest >> testToLabel [
 		on: [ :element | self assert: element text asString equals: 'hello' ]
 ]
 
+{ #category : #tests }
+ToSerializerTest >> testToTabPane1 [
+
+	| origin |
+	origin := ToTabPane new.
+	origin resizablePanes: true.
+	1 to: 3 do: [ :index | | tab |
+		tab := ToTab new.
+		tab closable: true.
+		tab labelText: 'Button ' , index asString.
+		tab paneBuilder: [ :pane :theNoteBook |
+			pane background: Color random ].
+		origin addTab: tab ].
+
+	self test: origin on: [ :element |
+		self assert: element tabs size equals: 3 ]
+]
+
+{ #category : #tests }
+ToSerializerTest >> testToTabPane2 [
+
+	| origin |
+	origin := ToTabPane new.
+	origin resizablePanes: true.
+	1 to: 100 do: [ :index |
+		| tab |
+		tab := ToTab new.
+		tab closable: true.
+		tab labelText: 'Button ' , index asString.
+		tab paneBuilder: [ :pane :theNoteBook |
+			pane background: Color random ].
+		origin addTab: tab ].
+
+	self
+		test: origin
+		on: [ :element | self assert: element tabs size equals: 100 ]
+]
+
+{ #category : #tests }
+ToSerializerTest >> testToTabPane3 [
+
+	| origin |
+	origin := ToTabPane new.
+	origin resizablePanes: true.
+	1 to: 0 do: [ :index |
+		| tab |
+		tab := ToTab new.
+		tab closable: true.
+		tab labelText: 'Button ' , index asString.
+		tab paneBuilder: [ :pane :theNoteBook |
+			pane background: Color random ].
+		origin addTab: tab ].
+
+	self
+		test: origin
+		on: [ :element | self assert: element tabs size equals: 0 ]
+]
+
+{ #category : #tests }
+ToSerializerTest >> testToTabPane4 [
+
+	| origin |
+	origin := ToTabPane new.
+	origin resizablePanes: true.
+	1 to: 3 do: [ :index |
+		| tab |
+		tab := ToTab new.
+		tab closable: true.
+		tab labelText: 'Button ' , index asString.
+		tab paneBuilder: [ :pane :theNoteBook |
+			pane background: Color random ].
+		origin addTab: tab ].
+
+	self test: origin on: [ :element |
+		self assert: element tabs size equals: 3.
+		self
+			assert: element tabs first firstElement text asString
+			equals: 'Button 1'.
+		self
+			assert: element tabs second firstElement text asString
+			equals: 'Button 2'.
+		self
+			assert: element tabs third firstElement text asString
+			equals: 'Button 3' ]
+]
+
+{ #category : #tests }
+ToSerializerTest >> testToTabPane5 [
+
+	| origin |
+	origin := ToTabPane new.
+	origin resizablePanes: true.
+	1 to: 3 do: [ :index |
+		| tab |
+		tab := ToTab new.
+		tab closable: true.
+		tab labelText: 'Button ' , index asString.
+		tab paneBuilder: [ :pane :theNoteBook | #test ].
+		origin addTab: tab ].
+
+	self test: origin on: [ :element |
+		self assert: element tabs size equals: 3.
+		self
+			assert: (element tabs first paneBuilder value: nil value: nil)
+			equals: #test.
+		self
+			assert: (element tabs second paneBuilder value: nil value: nil)
+			equals: #test.
+		self
+			assert: (element tabs third paneBuilder value: nil value: nil)
+			equals: #test ]
+]
+
 { #category : #tests }
 ToSerializerTest >> testTokens [