code: def show_help(self):
          
          # Read the header and footer html snippets
          self.main_stacked_widget.setCurrentIndex(0)
          header = html_header()
          footer = html_footer()
  
          string = header
  
          message = impact_report_help()
  
          string += message.to_html()
          string += footer
  
          self.help_web_view.setHtml(string)
docs: Show usage info to the user.
  
          .. versionadded: 4.3.0