code: def _draw_footer(self):
          
          n_rows, n_cols = self.term.stdscr.getmaxyx()
          window = self.term.stdscr.derwin(1, n_cols, self._row, 0)
          window.erase()
          window.bkgd(str(' '), self.term.attr('HelpBar'))
  
          text = self.FOOTER.strip()
          self.term.add_line(window, text, 0, 0)
          self._row += 1
docs: Draw the key binds help bar at the bottom of the screen