code: def apply_style(self, cmd, *args):
          
          for c0, c1 in self.col_coord_tuples:
              for r0, r1 in self.row_coord_tuples:
                  c = [cmd, (c0, r0), (c1, r1)] + list(args)
                  self.style_cmds.append(c)
          return self
docs: Apply the specified style cmd to this region. For example, set all fonts to size 12, apply_style('FONTSIZE', 12)
          :param cmd: reportlab  format command
          :param args: arguments for the cmd
          :return: self