anchor.diff:          printfn "#6"
           Display()
   
  -        w.Show()
  +        w |> app.Run |> ignore
           
   
   Main.Run()
positive.code: 	outputColor = vec4(1.0f, 1.0f, 1.0f, 1.0f);
  }
  """
  
      let attributeLocations = new Dictionary<uint32, string>()
      let positionAttribute = 0u
  
negative.code:         gl.VertexAttribPointer(0u, 4, OpenGL.GL_FLOAT, OpenGL.GL_FALSE>0u, 0, IntPtr(0))
  
          gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, 3)
          gl.Flush()
  //        gl.DisableVertexAttribArray(0u)
  //        gl.UseProgram(0u)
  //        shaderProgram.Unbind(gl)
         
      let loadXamlWindow (filename:string) =
          let reader = XmlReader.Create(filename)
  