diff --git a/references/overlay.py b/references/overlay.py
deleted file mode 100644
index 542a60c..0000000
--- a/references/overlay.py
+++ /dev/null
@@ -1,138 +0,0 @@
-import wx
-# import wx.richtext as rt
-# import images
-# http://www.ccp4.ac.uk/dist/checkout/wxPython-src-3.0.2.0/wxPython/demo/RichTextCtrl.py
-# https://stackoverflow.com/questions/40257359/how-to-dynamically-update-multiple-wxpython-static-text
-
-def GetRoundBitmap( w, h, r ):
-    maskColor = wx.Colour(0,0,0)
-    shownColor = wx.Colour(5,5,5)
-    b = wx.EmptyBitmap(w,h)
-    dc = wx.MemoryDC(b)
-    dc.SetBrush(wx.Brush(maskColor))
-    dc.DrawRectangle(0,0,w,h)
-    dc.SetBrush(wx.Brush(shownColor))
-    dc.SetPen(wx.Pen(shownColor))
-    dc.DrawRoundedRectangle(0,0,w,h,r)
-    dc.SelectObject(wx.NullBitmap)
-    b.SetMaskColour(maskColor)
-    return b
-
-def GetRoundShape( w, h, r ):
-    return wx.Region( GetRoundBitmap(w,h,r) )
-
-class PanelOne(wx.Panel):
-    def __init__(self, parent):
-        wx.Panel.__init__(self, parent)
-        self.Bind(wx.EVT_KEY_UP, self.OnKeyDown)
-        wx.StaticText(self, label = "'^⌘G - Select All    (Ctrl-Cmd-G)        ^⌘G - Select All    (Ctrl-Cmd-G)\n^⌘G - Select All    (Ctrl-Cmd-G)        ^⌘G - Select All    (Ctrl-Cmd-G)")
-        self.SetTransparent( 220 )
-
-    def OnKeyDown(self, event):
-        self.Destroy()
-
-class FancyFrame(wx.Frame):
-    def __init__(self):
-        sizer = wx.GridBagSizer()
-        style = ( wx.CLIP_CHILDREN | wx.STAY_ON_TOP | wx.FRAME_NO_TASKBAR |
-                  wx.NO_BORDER | wx.FRAME_SHAPED  )
-        wx.Frame.__init__(self, None, title='Fancy', style = style)
-
-        # self.rtc = rt.RichTextCtrl(self, style=wx.VSCROLL|wx.TE_READONLY|wx.HSCROLL|wx.NO_BORDER);
-        # self.rtc.Disable()
-        boldstatic = wx.Font(pointSize = 24, family = wx.DEFAULT,
-               style = wx.BOLD, weight = wx.BOLD,
-               faceName = 'Consolas')
-        normalstatic = wx.Font(pointSize = 10, family = wx.DEFAULT,
-               style = wx.NORMAL, weight = wx.NORMAL,
-               faceName = 'Consolas')
-        # font = wx.Font(pointSize = 18, family = wx.DEFAULT,
-        #        style = wx.NORMAL, weight = wx.NORMAL,
-        #        faceName = 'Consolas')
-        self.SetFont(boldstatic)
-        self.SetBackgroundColour((211,211,211))
-        self.label = wx.StaticText(self, label = "^⌘G", pos = (100,50))
-        self.SetFont(normalstatic)
-        self.label2 = wx.StaticText(self, label = " - Select All    (Ctrl-Cmd-G)", pos = (200,50))
-        # sizer.Add(self.label, (4, 0), (1, 5), wx.EXPAND)
-        # sizer.Add(self.label2, (5, 0), (1, 5), wx.EXPAND)
-        # wx.StaticText(self, label = "^⌘G - Select All    (Ctrl-Cmd-G)  ||  ^⌘G - Select All    (Ctrl-Cmd-G)\n^⌘G - Select All    (Ctrl-Cmd-G)        ^⌘G - Select All    (Ctrl-Cmd-G)")
-        # self.rtc.Bind(wx.EVT_SET_FOCUS,self.OnInput)
-        # self.rtc.Bind(wx.EVT_KILL_FOCUS,self.OnInput)
-        # self.rtc.Bind(wx.EVT_KEY_UP, self.OnKeyDown)
-        # self.rtc.BeginFontSize(14)
-        # self.rtc.BeginBold()
-        # self.rtc.WriteText("^⌘G")
-        # self.rtc.EndBold()
-        # self.rtc.BeginFontSize(10)
-        # self.rtc.WriteText(" - Select All    (Ctrl-Cmd-G)\n")
-        # self.rtc.BeginFontSize(14)
-        # self.rtc.WriteText("Different font sizes on the same line is allowed, too.")
-        # self.rtc.EndFontSize()
-
-        # self.rtc.WriteText(" Next we'll show an indented paragraph.")
-
-        # self.rtc.BeginLeftIndent(60)
-        # self.rtc.Newline()
-
-        # self.rtc.WriteText("It was in January, the most down-trodden month of an Edinburgh winter. An attractive woman came into the cafe, which is nothing remarkable.")
-        # self.rtc.EndLeftIndent()
-        # self.SetFont(wx.Font(20, wx.SWISS, wx.NORMAL, wx.BOLD))
-        # font = wx.Font(18, wx.DECORATIVE, wx.ITALIC, wx.NORMAL)
-        # wx.text.SetFont(font)
-        # self.panelOne = PanelOne(self)
-        # self.SetFocus()
-        w, h = wx.GetDisplaySize()
-        self.SetSize((w/2, h/2))
-        self.SetPosition( ((w-w/2)/2,(h-h/2)/2) )
-        self.SetTransparent( 220 )
-
-        self.Bind(wx.EVT_KEY_UP, self.OnKeyDown)
-        self.Bind(wx.EVT_MOTION, self.OnMouse)
-        self.Bind(wx.EVT_PAINT, self.OnPaint)
-        if wx.Platform == '__WXGTK__':
-            self.Bind(wx.EVT_WINDOW_CREATE, self.SetRoundShape)
-        else:
-            self.SetRoundShape()
-
-        self.SetSizer(sizer)
-        self.Show(True)
-
-    
-    def OnInput(self, e):
-        self.Destroy()
-        # e.Skip()
-
-    def SetRoundShape(self, event=None):
-        w, h = self.GetSizeTuple()
-        self.SetShape(GetRoundShape( w,h, 10 ) )
-
-    def OnPaint(self, event):
-        dc = wx.PaintDC(self)
-        dc = wx.GCDC(dc)
-        w, h = self.GetSizeTuple()
-        r = 10
-        dc.SetPen( wx.Pen("#D3D3D3dth = 2"))
-        dc.SetBrush( wx.Brush("#D3D3D3"))
-        dc.DrawRoundedRectangle( 0,0,w,h,r )
-
-    def OnKeyDown(self, event):
-        # self.Close(force=True)
-        self.Destroy()
-
-    def OnMouse(self, event):
-        """implement dragging"""
-        if not event.Dragging():
-            self._dragPos = None
-            return
-        self.CaptureMouse()
-        if not self._dragPos:
-            self._dragPos = event.GetPosition()
-        else:
-            pos = event.GetPosition()
-            displacement = self._dragPos - pos
-            self.SetPosition( self.GetPosition() - displacement )
-
-app = wx.App()
-f = FancyFrame()
-app.MainLoop()
\ No newline at end of file