anchor.diff:          fun(BrokerName) ->
               register(BrokerName, spawn(market, broker, []))
           end,
  -        atoms_sequence("broker", "_", 1, ?MAX_BROKERS)
  +        atoms_sequence("broker", "_", 1, ?NUM_BROKERS)
       ),
   
       % Register & spawn ticker
  
positive.code: %% Sends 'stop' message to all registered procs
  %%
  stop() ->
      Procs = [ticker_proc] ++ atoms_sequence("broker", "_", 1, ?MAX_BROKERS),
      lists:foreach(fun(Proc) -> Proc ! stop end, Procs).
  
  
  
negative.code: -module(market).
  -compile(export_all).
  
  -define(NUM_LISTINGS, 5).
  -define(NUM_BROKERS, 3).
  -define(TICKER_INTERVAL, 1000).
  -define(MAX_RANDOM_SLEEP, 100).
  
  