docs: def cmd():
      """Implementation of rprof subcommand.
  
      Other Parameters:
          conf.rprof
          conf.core
      """
      sdat = StagyyData(conf.core.path)
      if sdat.rprof is None:
          return
  
      if conf.rprof.grid:
          for step in sdat.walk.filter(rprof=True):
              plot_grid(step)
  
      lovs = misc.list_of_vars(conf.rprof.plot)
      if not lovs:
          return
  
      if conf.rprof.average:
          plot_average(sdat, lovs)
      else:
          plot_every_step(sdat, lovs)