code: def mkmanpage(name):
      
      mod_name, class_name = name.rsplit('.', 1)
      mod = __import__(mod_name)
      inst = getattr(mod, class_name)()
      sections = cmdln.man_sections_from_cmdln(inst)
      sys.stdout.write(''.join(sections))
docs: Return man page content for the given `cmdln.Cmdln` subclass name.