diff -r 94c11207aa6f -r 6014ef82a98a Viewer.py
--- a/Viewer.py	Fri Sep 30 17:16:02 2011 +0200
+++ b/Viewer.py	Sun Oct 09 19:51:14 2011 +0200
@@ -77,7 +77,6 @@
 
 ZOOM_FACTORS = [math.sqrt(2) ** x for x in xrange(-6, 7)]
 
-
 def GetVariableCreationFunction(variable_type):
     def variableCreationFunction(viewer, id, specific_values):
         return FBD_Variable(viewer, variable_type, 
@@ -466,7 +465,7 @@
         self.DrawingWire = False
         self.current_id = 0
         self.TagName = tagname
-        self.Errors = []
+        self.Highlights = []
         self.InstancePath = instancepath
         self.StartMousePos = None
         self.StartScreenPos = None
@@ -507,6 +506,9 @@
         
         self.SetScale(len(ZOOM_FACTORS) / 2)
         
+        self.RefreshHighlightsTimer = wx.Timer(self, -1)
+        self.Bind(wx.EVT_TIMER, self.OnRefreshHighlightsTimer, self.RefreshHighlightsTimer)
+        
         self.ResetView()
         
         # Link Viewer event to corresponding methods
@@ -526,6 +528,10 @@
         self.Bind(wx.EVT_MOUSEWHEEL, self.OnMouseWheelWindow)
         self.Bind(wx.EVT_SIZE, self.OnMoveWindow)
     
+    def __del__(self):
+        DebugViewer.__del__(self)
+        self.RefreshHighlightsTimer.Stop()
+    
     def SetCurrentCursor(self, cursor):
         global CURSORS
         if self.CurrentCursor != cursor:
@@ -839,7 +845,7 @@
 
         self.Inhibit(False)
         self.RefreshVisibleElements()
-        self.ShowErrors()
+        self.ShowHighlights()
         self.Refresh(False)
     
     def GetPreviousSteps(self, connectors):
@@ -1848,6 +1854,7 @@
             dialog = wx.TextEntryDialog(self.ParentWindow, _("Edit comment"), _("Please enter comment text"), "", wx.OK|wx.CANCEL|wx.TE_MULTILINE)
         else:
             dialog = wx.TextEntryDialog(self.ParentWindow, _("Edit comment"), _("Please enter comment text"), "", wx.OK|wx.CANCEL)
+        dialog.SetClientSize(wx.Size(400, 200))
         if dialog.ShowModal() == wx.ID_OK:
             value = dialog.GetValue()
             id = self.GetNewId()
@@ -2349,6 +2356,7 @@
             dialog = wx.TextEntryDialog(self.ParentWindow, _("Edit comment"), _("Please enter comment text"), comment.GetContent(), wx.OK|wx.CANCEL|wx.TE_MULTILINE)
         else:
             dialog = wx.TextEntryDialog(self.ParentWindow, _("Edit comment"), _("Please enter comment text"), comment.GetContent(), wx.OK|wx.CANCEL)
+        dialog.SetClientSize(wx.Size(400, 200))
         if dialog.ShowModal() == wx.ID_OK:
             value = dialog.GetValue()
             rect = comment.GetRedrawRect(1, 1)
@@ -2747,22 +2755,30 @@
 
 
 #-------------------------------------------------------------------------------
-#                        Errors showing functions
-#-------------------------------------------------------------------------------
-
-    def ClearErrors(self):
-        self.Errors = []
+#                        Highlights showing functions
+#-------------------------------------------------------------------------------
+
+    def OnRefreshHighlightsTimer(self, event):
         self.RefreshView()
-
-    def AddShownError(self, infos, start, end):
-        self.Errors.append((infos, start, end))
-
-    def ShowErrors(self):
-        for infos, start, end in self.Errors:
-            if infos[0] in ["io_variable", "block", "coil", "contact", "transition", "step", "action_block"]:
+        event.Skip()
+
+    def ClearHighlights(self, highlight_type=None):
+        if highlight_type is None:
+            self.Highlights = []
+        else:
+            self.Highlights = [(infos, start, end, highlight) for (infos, start, end, highlight) in self.Highlights if highlight != highlight_type]
+        self.RefreshView()
+
+    def AddHighlight(self, infos, start, end, highlight_type):
+        self.Highlights.append((infos, start, end, highlight_type))
+        self.RefreshHighlightsTimer.Start(int(REFRESH_HIGHLIGHT_PERIOD * 1000), oneShot=True)
+        
+    def ShowHighlights(self):
+        for infos, start, end, highlight_type in self.Highlights:
+            if infos[0] in ["comment", "io_variable", "block", "connector", "coil", "contact", "step", "transition", "jump", "action_block"]:
                 block = self.FindElementById(infos[1])
                 if block is not None:
-                    block.AddError(infos[2:], start, end)    
+                    block.AddHighlight(infos[2:], start, end, highlight_type)
         
 #-------------------------------------------------------------------------------
 #                            Drawing functions