docs: def about( info, parent = None, logo = '' ):
          """
          Displays about information in a popup dialog.
          
          :param      info    | <str>
                      parent  | <QWidget>
                      logo    | <QPixmap> || <str>
          """
          
          dlg = XAboutDialog(parent)
          dlg.setLogo(logo)
          dlg.setInfo(info)
          
          dlg.exec_()