diff --git a/AttributeEditor.py b/AttributeEditor.py
index cf00f330..8eadb310 100644
--- a/AttributeEditor.py
+++ b/AttributeEditor.py
@@ -243,6 +243,8 @@ def __init__(self, parent, id, model):
 
 	###
 	def __do_layout(self):
+		"""
+		"""
 		sizer_1 = wx.BoxSizer(wx.HORIZONTAL)
 		sizer_1.Add(self._sb_input, 0, wx.ADJUST_MINSIZE, 0)
 		sizer_1.Add(self._sb_output, 0, wx.ADJUST_MINSIZE, 0)
@@ -252,30 +254,42 @@ def __do_layout(self):
 
 	###
 	def __set_binding(self):
+		"""
+		"""
 		self._sb_input.Bind(wx.EVT_TEXT, self.OnInput)
 		self._sb_output.Bind(wx.EVT_TEXT, self.OnOuput)
 		self.Bind(wx.EVT_CLOSE, self.OnClose)
 
 	@Post_Undo
 	def OnInput(self, event):
+		"""
+		"""
 		self.__state['input'] = self._sb_input.GetValue()
 		self.notify()
 
 	@Post_Undo
 	def OnOuput(self, event):
+		"""
+		"""
 		self.__state['output'] = self._sb_output.GetValue()
 		self.notify()
 
 	###
 	def GetState(self):
+		"""
+		"""
 		return self.__state
 
 	###
 	def Undo(self):
+		"""
+		"""
 		self.canvas.Undo()
 
 	###
 	def OnClose(self, event):
+		"""
+		"""
 		self.Destroy()
 		event.Skip()
 
diff --git a/Components.py b/Components.py
index ce7427c7..dc541fca 100644
--- a/Components.py
+++ b/Components.py
@@ -507,7 +507,7 @@ def Load(filename, label):
 		else:
 			### mandatory due to the LoadFile call before
 			m.label = label
-			
+			print(filename,m)
 			return AMDComponent.ChekFilename(filename, m)
 
 	@staticmethod
diff --git a/Container.py b/Container.py
index 74f87973..fbfcf42e 100644
--- a/Container.py
+++ b/Container.py
@@ -2780,8 +2780,20 @@ def select(self, item=None):
 				
 				item.OnSelect(None)
 				if isinstance(item, Connectable):
-					self.nodes.extend([INode(item, n, self) for n in range(item.input)])
-					self.nodes.extend([ONode(item, n, self) for n in range(item.output)])
+					for n in range(item.input):
+						if n in item.getInputLabels():
+							self.nodes.append(INode(item, n, self, item.getInputLabel(n)))
+						else:
+							self.nodes.append(INode(item, n, self))
+
+					for n in range(item.output):
+						if n in item.getOutputLabels():
+							self.nodes.append(ONode(item, n, self, item.getOutputLabel(n)))
+						else:
+							self.nodes.append(ONode(item, n, self))
+
+					# self.nodes.extend([INode(item, n, self) for n in range(item.input)])
+					# self.nodes.extend([ONode(item, n, self) for n in range(item.output)])
 				if isinstance(item, Resizeable):
 					self.nodes.extend([ResizeableNode(item, n, self) for n in range(len(item.x))])
 					
@@ -3203,7 +3215,6 @@ class ConnectionShape(LinesShape, Resizeable, Selectable, Structurable):
 	""" ConnectionShape class
 	"""
 
-
 	def __init__(self):
 		""" Constructor
 		"""
@@ -3221,8 +3232,6 @@ def __init__(self):
 	def __setstate__(self, state):
 		""" Restore state from the unpickled state values.
 		"""
-
-
 		####################################" Just for old model
 		if 'touch_list' not in state: state['touch_list'] = []
 		if 'font' not in state: state['font'] = [FONT_SIZE, 74, 93, 700, u'Arial']
@@ -3231,19 +3240,28 @@ def __setstate__(self, state):
 		self.__dict__.update(state)
 
 	def setInput(self, item, index):
+		"""
+		"""
 		self.input = (item, index)
 
 	def setOutput(self, item, index):
+		"""
+		"""
 		self.output = (item, index)
 
 	def getInput(self):
+		"""
+		"""
 		return self.input
 
 	def getOutput(self):
+		"""
+		"""
 		return self.output
 
 	def draw(self, dc):
-
+		"""
+		"""
 		if self.input:
 			self.x[0], self.y[0] = self.input[0].getPortXY('output', self.input[1])
 
@@ -3431,6 +3449,8 @@ def OnProperties(self, event):
 		f.Show()
 		
 	def OnPluginsManager(self, event):
+		"""
+		"""
 		canvas = event.GetEventObject()
 		f = PluginsGUI.ModelPluginsManager(	parent=canvas.GetParent(),
 									id=wx.NewIdRef(),
@@ -3534,6 +3554,12 @@ def update(self, concret_subject = None):
 							i = diagram.priority_list.index(old_label)
 							diagram.priority_list[i] = new_label
 
+				### clear custom port labels if their number change 
+				# if prop == 'input':
+					# self.setInputLabels({})
+				# if prop == 'output':
+					# self.setOutputLabels({})
+
 				### clear manager : direct update only for image_path propertie
 				if val not in ('',[],{}) or (prop == 'image_path' and val == ""):
 					canvas = concret_subject.canvas
@@ -3790,15 +3816,16 @@ def __setstate__(self, state):
 		if 'label_pos' not in state: state['label_pos'] = 'center'
 		if 'input_direction' not in state: state['input_direction'] = 'ouest'
 		if 'output_direction' not in state: state['output_direction'] = 'est'
-		##############################################
+		if '_input_labels' not in state: state['_input_labels'] = {}
+		if '_output_labels' not in state: state['_output_labels'] = {}
+ 		##############################################
 
 		self.__dict__.update(state)
 		if new_class:
 			self.__class__ = new_class
 
+	###
 	def __getstate__(self):
-		"""
-		"""
 		"""Return state values to be pickled."""
 		return Achievable.__getstate__(self)
 
@@ -3808,7 +3835,7 @@ def __getattr__(self, name):
 		"""
 		if name == 'dump_attributes':
 			#return ['model_path', 'python_path', 'args'] + self.GetAttributes()
-			return ['args'] + self.GetAttributes()
+			return ['args'] + Connectable.DUMP_ATTR + self.GetAttributes()
 		#=======================================================================
 		elif name == 'dump_abstr_attributes':
 			### Atomic model has no abstract attributes
@@ -3817,9 +3844,9 @@ def __getattr__(self, name):
 		else:
 			raise AttributeError(name)
 
-
 	def draw(self, dc):
-
+		"""
+		"""
 		if self.selected:
 			### inform about the nature of the block using icon
 			name = 'atomic3.png' if self.model_path != "" else 'pythonFile.png' if self.python_path.endswith('.py') else 'pyc.png' 
@@ -3832,7 +3859,6 @@ def draw(self, dc):
 	def OnLeftDClick(self, event):
 		""" On left double click event has been invoked.
 		"""
-
 		self.OnProperties(event)
 		event.Skip()
 
@@ -3994,6 +4020,8 @@ def __setstate__(self, state):
 		if 'label_pos' not in state:state['label_pos'] = 'center'
 		if 'input_direction' not in state: state['input_direction'] = 'ouest'
 		if 'output_direction' not in state: state['output_direction'] = 'est'
+		if '_input_labels' not in state: state['_intput_labels'] = {}
+		if '_output_labels' not in state: state['_output_labels'] = {}
 		#####################################
 
 		self.__dict__.update(state)
@@ -4009,7 +4037,7 @@ def __getattr__(self, name):
 
 		if name == 'dump_attributes':
 			#return ['shapes', 'priority_list', 'constants_dico', 'model_path', 'python_path','args'] + self.GetAttributes()
-			return ['shapes', 'priority_list', 'constants_dico','args'] + self.GetAttributes()
+			return ['shapes', 'priority_list', 'constants_dico','args'] + Connectable.DUMP_ATTR +self.GetAttributes()
 		#=======================================================================
 		elif name == 'dump_abstr_attributes':
 			return Abstractable.DUMP_ATTR if hasattr(self, 'layers') and hasattr(self, 'current_level') else []
@@ -4017,9 +4045,9 @@ def __getattr__(self, name):
 		else:
 			raise AttributeError(name)
 
-
 	def draw(self, dc):
-
+		"""
+		"""
 		if self.selected:
 			### inform about the nature of the block using icon
 			img = wx.Bitmap(os.path.join(ICON_PATH_16_16, 'coupled3.png'), wx.BITMAP_TYPE_ANY)
@@ -4100,25 +4128,6 @@ def OnLeftDown(self, event):
 		self.cf.deselect(self.item)
 		event.Skip()
 
-	def OnRightDown(self, event):
-		""" Left Down click has been invoked
-		"""
-		### dialog to ask new port label
-		
-		old_label = self.label
-
-		d = wx.TextEntryDialog(None, _('New Label'), value = old_label, style=wx.OK)
-		d.ShowModal()
-
-		### new label
-		new_label = d.GetValue()
-
-		### only if new and old label are different
-		if new_label != old_label:
-			self.label = new_label
-		
-		event.Skip()
-
 	def HitTest(self,x,y):
 		""" Collision detection method.
 		"""
@@ -4138,12 +4147,12 @@ class INode(ConnectableNode):
 	""" INode(item, index, cf)
 	"""
 
-	def __init__(self, item, index, cf):
+	def __init__(self, item, index, cf, label=None):
 		""" Constructor.
 		"""
 		ConnectableNode.__init__(self, item, index, cf)
 
-		self.label = f"in{self.index}"
+		self.label = f"in{self.index}" if not label else label
 
 	def move(self, x, y):
 		""" Move method.
@@ -4156,6 +4165,38 @@ def move(self, x, y):
 		self.cf.showOutputs()
 		self.cf.select(ci)
 
+	def OnRightDown(self, event):
+		""" Left Down click has been invoked
+		"""
+		### dialog to ask new port label
+		
+		menu = Menu.NodePopupMenu(self)
+		### Show popup_menu
+		canvas = event.GetEventObject()
+		canvas.PopupMenu(menu, event.GetPosition())
+		### destroy menu local variable
+		menu.Destroy()
+		
+		event.Skip()
+
+	def OnEditLabel(self, event):
+		""" Function called by the OnRightDown call event function
+		"""
+		### old label
+		old_label = self.label
+
+		### ask tne new label
+		d = wx.TextEntryDialog(None, _('New Input Label'), value = old_label, style=wx.OK)
+		d.ShowModal()
+
+		### new label
+		new_label = d.GetValue()
+
+		### only if new and old label are different
+		if new_label != old_label:
+			self.label = new_label
+			self.item.addInputLabels(self.index, self.label)
+
 	def leftUp(self, items):
 		""" Left up action has been invocked.
 		"""
@@ -4211,12 +4252,12 @@ class ONode(ConnectableNode):
 	""" ONode(item, index, cf)
 	"""
 
-	def __init__(self, item, index, cf):
+	def __init__(self, item, index, cf, label=None):
 		""" Constructor.
 		"""
 		ConnectableNode.__init__(self, item, index, cf)
 
-		self.label = "out%d"%self.index
+		self.label = "out%d"%self.index if not label else label
 
 	def move(self, x, y):
 		""" Moving method.
@@ -4229,6 +4270,26 @@ def move(self, x, y):
 		self.cf.showInputs()
 		self.cf.select(ci)
 
+	def OnRightDown(self, event):
+		""" Left Down click has been invoked
+		"""
+		### dialog to ask new port label
+		
+		old_label = self.label
+
+		d = wx.TextEntryDialog(None, _('New Output Label'), value = old_label, style=wx.OK)
+		d.ShowModal()
+
+		### new label
+		new_label = d.GetValue()
+
+		### only if new and old label are different
+		if new_label != old_label:
+			self.label = new_label
+			self.item.addOutputLabels(self.index, self.label)
+		
+		event.Skip()
+
 	def leftUp(self, items):
 		""" Left up action has been invocked
 		"""
@@ -4379,6 +4440,8 @@ def __setstate__(self, state):
 			state['attributes'].insert(1,'label_pos')
 		if 'output_direction' not in state: state['output_direction'] ="est"
 		if 'input_direction' not in state: state['input_direction'] = "ouest"
+		if '_input_labels' not in state: state['_input_labels'] = {}
+		if '_output_labels' not in state: state['_output_labels'] = {}
 		##############################################
 
 		self.__dict__.update(state)
diff --git a/Menu.py b/Menu.py
index 11b5c624..a0b5c9ca 100644
--- a/Menu.py
+++ b/Menu.py
@@ -699,6 +699,25 @@ def __init__(self, parent):
 		
 		### Bind is not necessary because ID_EXIT_DAIGRAM and ID_DETACH_DIAGRAM are already binded
 
+class NodePopupMenu(wx.Menu):
+	""" Node popup menu
+	"""
+
+	def __init__(self, parent):
+		""" Constructor.
+		"""
+		wx.Menu.__init__(self)
+
+		edit = wx.MenuItem(self, -1, _('Edit'), _('Edit label'))
+		
+		edit.SetBitmap(wx.Bitmap(os.path.join(ICON_PATH_16_16,'edit.png')))
+		
+		AppendItem = self.AppendItem if wx.VERSION_STRING < '4.0' else self.Append
+
+		AppendItem(edit)
+
+		### bind event with new OnDeletePage
+		self.Bind(wx.EVT_MENU, parent.OnEditLabel, edit)
 class PropertiesCtrlPopupMenu(wx.Menu):
 	""" PropertiesCtrl popup menu.
 	"""
diff --git a/Mixins/Connectable.py b/Mixins/Connectable.py
index dae1954c..1d002f26 100644
--- a/Mixins/Connectable.py
+++ b/Mixins/Connectable.py
@@ -23,16 +23,60 @@
 class Connectable:
 	""" Mixin to create connectable nodes or ports.
 	"""
+	DUMP_ATTR = ['_input_labels','_output_labels']
 
 	###
-	def __init__(self, nb_in = 1, nb_out = 3):
+	def __init__(self, nb_in:int=1, nb_out:int=3)->None:
 		""" Constructor.
 		"""
 		self.input = nb_in
 		self.output = nb_out
+		### to store label of ports
+		self._input_labels = {}
+		self._output_labels = {}
+
+	def getInputLabel(self, port:int)->str:
+		""" return the label of the input port n
+		"""
+		return self._input_labels[port]
+
+	def getOutputLabel(self, port:int)->str:
+		""" return the label of the output port n
+		"""
+		return self._output_labels[port]
+
+	def getInputLabels(self)->dict:
+		""" return the input label dict
+		"""
+		return self._input_labels
+
+	def getOutputLabels(self)->dict:
+		""" return the output label dict
+		"""
+		return self._output_labels
+
+	def setInputLabels(self,v:dict)->None:
+		""" set the input label dict
+		"""
+		self._input_labels = v
+
+	def setOutputLabels(self, v:dict)->None:
+		""" set the output label dict
+		"""
+		self._output_labels = v
+		
+	def addInputLabels(self, port:int, label:str)->None:
+		""" add a label to the input port
+		"""
+		self._input_labels[port] = label
+
+	def addOutputLabels(self, port:int, label:str):
+		""" add a label to the output port
+		"""
+		self._output_labels[port] = label
 
 	###
-	def getPortXY(self, type, num):
+	def getPortXY(self, type:str, num)->tuple:
 		""" Return the tuple (x,y).
 		"""
 
diff --git a/PropertiesGridCtrl.py b/PropertiesGridCtrl.py
index 6df6b9b9..3ea3b9c9 100644
--- a/PropertiesGridCtrl.py
+++ b/PropertiesGridCtrl.py
@@ -778,8 +778,10 @@ def OnRightClick(self, event):
 	def OnGridColSort(self, event):
 		"""
 		"""
-		self.SetSortingColumn(event.Getcol())
-
+		try:
+			self.SetSortingColumn(event.Getcol())
+		except AttributeError:
+			pass
 	###
 	def OnEditCell(self, evt):
 		"""
diff --git a/ZipManager.py b/ZipManager.py
index 8bc64776..2350620d 100644
--- a/ZipManager.py
+++ b/ZipManager.py
@@ -153,7 +153,7 @@ def Update(self, replace_files:[str]=[])->None:
 		### delete empty fileName
 		replace_files = [f for f in replace_files if f!='']
 
-		# call this function because : http://www.digi.com/wiki/developer/index.php/Error_messages
+		# call this function because: http://www.digi.com/wiki/developer/index.php/Error_messages
 		Zip.ClearCache(self.fn)
 
 		zin = zipfile.ZipFile(self.fn, 'r')
@@ -176,6 +176,7 @@ def Update(self, replace_files:[str]=[])->None:
 				except UnicodeDecodeError as info:
 					zout.writestr(base_name, data)
 				else:
+					exclude_file.append(replace_files.index(fn))
 					sys.stdout.write("%s not rewrite\n"%(fn))
 				
 				#sys.stdout.write("update %s from compressed %s\n"%(base_name, fn))