private void PDFReadingControl_Loaded(object sender, RoutedEventArgs e)
 {
     if (ConfigurationManager.Instance.ConfigurationRecord.GUI_IsNovice)
     {
         GridRIGHT.Collapse();
     }
     else
     {
         GridRIGHT.Restore();
     }
 }
 private void ReevaluateFullScreen()
 {
     if (ButtonFullScreen.IsChecked ?? false)
     {
         // Go full screen
         GridLEFT.Collapse();
         GridRIGHT.Collapse();
         pdf_renderer_control.PageZoom(PDFRendererControl.ZoomType.Zoom1Up);
     }
     else
     {
         // Revert
         GridLEFT.Restore();
         GridRIGHT.Restore();
     }
 }