docs: def get_index2data(model_description):
      """
      Get a dictionary that maps indices to a list of (1) the id in the
      hwrt symbol database (2) the latex command (3) the unicode code point
      (4) a font family and (5) a font style.
  
      Parameters
      ----------
      model_description : string
          A model description file that points to a feature folder where an
          ``index2formula_id.csv`` has to be.
  
      Returns
      -------
      dictionary
          that maps indices to lists of data
  
      Notes
      -----
      This command need a database connection.
      """
      index2latex = {}
      translation_csv = os.path.join(get_project_root(),
                                     model_description["data-source"],
                                     "index2formula_id.csv")
      with open(translation_csv) as csvfile:
          csvreader = csv.DictReader(csvfile, delimiter=',', quotechar='"')
          for row in csvreader:
              database_id = int(row['formula_id'])
              online_data = get_online_symbol_data(database_id)
              latex = online_data['formula_in_latex']
              unicode_code_point = online_data['unicode_dec']
              font = online_data['font']
              font_style = online_data['font_style']
              index2latex[int(row['index'])] = [database_id,
                                                latex,
                                                unicode_code_point,
                                                font,
                                                font_style]
      return index2latex