code: function artifact(the_token) {
  
  // Return a string representing an artifact.
  
      if (the_token === undefined) {
          the_token = next_token;
      }
      return (
          (the_token.id === "(string)" || the_token.id === "(number)")
          ? String(the_token.value)
          : the_token.id
      );
  }
docs: The array collecting all generated warnings. Error reportage functions: