old_contents: """Tucker Sync config (template) module, used by server and client implementations.
  
  Usage:
      Copy config-template to config.py
      Adjust config settings below.
  
  License:
      The MIT License (MIT), see LICENSE.txt for more details.
  
  Copyright:
      Copyright (c) 2014 Steven Tucker and Gavin Kromhout.
  """
  
  # Private Application Keys.
  # Change both for production.
  # Any key listed will be accepted by the server.
  # To revoke a key for a group of clients simply remove or change it.
  #            group_a    group_b
  APP_KEYS = ('private', 'zqX2*I#y9ctNrsCKHU3xWKwgH8#JJhtVlIb980^OVT*YQ')
  
  db_config = {'database': 'database_name',
               'user': 'user_name',
               'password': 'secret_here',
               'host': '127.0.0.1',
               'raise_on_warnings': True}
  
  USER_PASSWORD_LEN = 14
  
  # Set True for production.
  # Passwords will be logged in clear text if False.
  PRODUCTION = False
  
new_contents: """Tucker Sync config (template) module, used by server and client implementations.
  
  Usage:
      Copy config-template to config.py
      Adjust config settings below.
  
  License:
      The MIT License (MIT), see LICENSE.txt for more details.
  
  Copyright:
      Copyright (c) 2014 Steven Tucker and Gavin Kromhout.
  """
  
  # Private Application Keys.
  # Change both for production.
  # Any key listed will be accepted by the server.
  # To revoke a key for a group of clients simply remove or change it.
  # Two or more keys should be specified (test suite requires at least 2).
  #            group_a    group_b
  APP_KEYS = ('private', 'zqX2*I#y9ctNrsCKHU3xWKwgH8#JJhtVlIb980^OVT*YQ')
  
  db_config = {'database': 'database_name',
               'user': 'user_name',
               'password': 'secret_here',
               'host': '127.0.0.1',
               'raise_on_warnings': True}
  
  USER_PASSWORD_LEN = 14
  
  # Set True for production.
  # Passwords will be logged in clear text if False.
  PRODUCTION = False
  
subject: add two or more keys comment to config template.