anchor.diff:  
   -export([start_link/0]).
   -export([
  -        subscribe/1,
  -        send/2
  +	init_tables/0,
  +	subscribe/1,
  +	send/2
   ]).
   
   %% ------------------------------------------------------------------
  
positive.code: %% ------------------------------------------------------------------
  
  start_link() ->
      gen_server:start_link({local, ?SERVER}, ?MODULE, [], []).
  
  init_tables() ->
  	ets:new(?MODULE, [
  
negative.code: 	ok.
  
  subscribe(Topic) ->
  	gen_server:call(?MODULE, {subscribe, Topic}).
  
  send(Topic, Message) ->
  	gen_server:call(?MODULE, {send, Topic, Message}).
  
  %% ------------------------------------------------------------------
  %% gen_server Function Definitions
  