anchor.diff:  %% Copyright (c) 2010 Jacob Vorreuter <jacob.vorreuter@gmail.com>
  -%% 
  +%%
   %% Permission is hereby granted, free of charge, to any person
   %% obtaining a copy of this software and associated documentation
   %% files (the "Software"), to deal in the Software without
  
positive.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
  
negative.code: -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([register/1, route/2]).
  
  