sizer.Add(boxsizer, (2,0), flag=wx.EXPAND)
# load and slice buttons.
- loadButton = wx.Button(self, -1, '&Load Model')
+ loadButton = wx.Button(self, -1, '&Load model')
sliceButton = wx.Button(self, -1, 'P&repare print')
printButton = wx.Button(self, -1, '&Print')
self.Bind(wx.EVT_BUTTON, self.OnLoadModel, loadButton)