anchor.diff:      if ($('[icon="launch"]') != null) {
         _exportButton = new PaperIconButton.from($('[icon="launch"]'));
         _exportButton.clickAction(() {
  -        _exportDialog.toggle();
  +        _exportDialog.open();
           ga.sendEvent("embed", "export");
         });
       }
  
positive.code:   void registerCancelExportButton() {
      if ($('#cancelExportButton') != null) {
        _cancelButton = new PaperIconButton.from($('#cancelExportButton'));
        _cancelButton.clickAction(_exportDialog.toggle);
      }
    }
  
  
negative.code:     if ($('#affirmButton') != null) {
        _affirmButton = new PaperIconButton.from($('#affirmButton'));
        _affirmButton.clickAction(() {
          _reset();
        });
      }
  