code: def load_info(cat):
      
      res = _load_yaml_(f'{PKG_PATH}/markets/{cat}.yml')
      root = os.environ.get('BBG_ROOT', '').replace('\\', '/')
      if not root: return res
      for cat, ovrd in _load_yaml_(f'{root}/markets/{cat}.yml').items():
          if isinstance(ovrd, dict):
              if cat in res: res[cat].update(ovrd)
              else: res[cat] = ovrd
          if isinstance(ovrd, list) and isinstance(res[cat], list): res[cat] += ovrd
      return res
docs: Load parameters for assets
  
      Args:
          cat: category
  
      Returns:
          dict
  
      Examples:
          >>> import pandas as pd
          >>>
          >>> assets = load_info(cat='assets')
          >>> all(cat in assets for cat in ['Equity', 'Index', 'Curncy', 'Corp'])
          True
          >>> os.environ['BBG_PATH'] = ''
          >>> exch = load_info(cat='exch')
          >>> pd.Series(exch['EquityUS']).allday
          [400, 2000]
          >>> test_root = f'{PKG_PATH}/tests'
          >>> os.environ['BBG_PATH'] = test_root
          >>> ovrd_exch = load_info(cat='exch')
          >>> # Somehow os.environ is not set properly in doctest environment
          >>> ovrd_exch.update(_load_yaml_(f'{test_root}/markets/exch.yml'))
          >>> pd.Series(ovrd_exch['EquityUS']).allday
          [300, 2100]