code: def check(text):
      
      err = "pinker.metadiscourse"
      msg = "Excessive metadiscourse."
  
      metadiscourse = [
          "The preceeding discussion",
          "The rest of this article",
          "This chapter discusses",
          "The preceding paragraph demonstrated",
          "The previous section analyzed",
      ]
  
      return existence_check(text, metadiscourse, err, msg)
docs: Suggest the preferred forms.