anchor.diff:  -behaviour(gen_server).
   
   %% gen_server callbacks
  --export([start_link/0, init/1, handle_call/3, handle_cast/2, 
  -	     handle_info/2, terminate/2, code_change/3]).
  +-export([start_link/0, init/1, handle_call/3, handle_cast/2,
  +         handle_info/2, terminate/2, code_change/3]).
   
   -export([register/1, route/2]).
   
  
positive.code: %% The return value is ignored.
  %% @hidden
  %%--------------------------------------------------------------------
  terminate(_Reason, _State) -> 
      ok.
  
  %%--------------------------------------------------------------------
  
negative.code: %% copies of the Software, and to permit persons to whom the
  %% Software is furnished to do so, subject to the following
  %% conditions:
  %%
  %% The above copyright notice and this permission notice shall be
  %% included in all copies or substantial portions of the Software.
  %%
  %% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  %% EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  %% OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  