anchor.diff:  %% The return value is ignored.
   %% @hidden
   %%--------------------------------------------------------------------
  -terminate(_Reason, _State) -> 
  +terminate(_Reason, _State) ->
       ok.
   
   %%--------------------------------------------------------------------
  
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: %% 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
  