diff -r d51af006fa6b -r 64d8f52bc8c8 controls/VariablePanel.py
--- a/controls/VariablePanel.py	Fri Aug 11 15:18:19 2017 +0300
+++ b/controls/VariablePanel.py	Mon Aug 14 19:13:01 2017 +0300
@@ -533,7 +533,7 @@
             self.ColFixedSizeFlag=[True,False,  True,   False,  True,   True,    False]
 
         self.PanelWidthMin = sum(self.ColSizes)
-        
+
         self.ElementType = element_type
         self.BodyType = None
 
@@ -643,7 +643,7 @@
         panel_width = window.Parent.ScreenRect.Width - 35
         if panel_width > self.PanelWidthMin:
             stretch_cols_width = panel_width
-            stretch_cols_sum = 0            
+            stretch_cols_sum = 0
             for col in range(len(self.ColFixedSizeFlag)):
                 if self.ColFixedSizeFlag[col]:
                     stretch_cols_width -= self.ColSizes[col]
@@ -759,7 +759,7 @@
         dialog = wx.MessageDialog(self, message, _("Error"), wx.OK|wx.ICON_ERROR)
         dialog.ShowModal()
         dialog.Destroy()
-            
+
     def OnVariablesGridCellChange(self, event):
         row, col = event.GetRow(), event.GetCol()
         colname = self.Table.GetColLabelValue(col, False)
@@ -793,7 +793,7 @@
 
         if message is not None:
             wx.CallAfter(self.ShowErrorMessage, message)
-            event.Veto()            
+            event.Veto()
         else:
             event.Skip()