code: def show_help(self, wizard_step):
          
          self.wizard_step = wizard_step
  
          header = html_header()
          footer = html_footer()
  
          content = header
  
          message = self.wizard_step.help()
  
          content += message.to_html()
          content += footer
  
          self.help_web_view.setHtml(content)
  
          # Store buttons' state
          self.next_button_state = self.parent.pbnNext.isEnabled()
          self.back_button_state = self.parent.pbnBack.isEnabled()
  
          # Disable those buttons
          self.parent.pbnNext.setEnabled(False)
          self.parent.pbnBack.setEnabled(False)
docs: Set wizard step and show the help text.