docs: def idx_num_to_name(L):
      """
      Switch from index-by-number to index-by-name.
  
      :param dict L: Metadata
      :return dict L: Metadata
      """
      logger_jsons.info("enter idx_num_to_name")
  
      try:
          if "paleoData" in L:
              L["paleoData"] = _import_data(L["paleoData"], "paleo")
          if "chronData" in L:
              L["chronData"] = _import_data(L["chronData"], "chron")
      except Exception as e:
          logger_jsons.error("idx_num_to_name: {}".format(e))
          print("Error: idx_name_to_num: {}".format(e))
  
      logger_jsons.info("exit idx_num_to_name")
      return L