anchor.diff:  
   %% @author Thorsten Schuett <schuett@zib.de>
   %% @doc    Message Sending.
  -%%  
  +%%
   %%  This module allows to configure Scalaris for using Distributed Erlang
   %%  (if the macro BUILTIN is defined) or TCP (macro TCP_LAYER) for inter-node
   %%  communication and wraps message sending and process identifiers.
  -%%  
  +%%
   %%  Messages consist of a tuple of which the first element is the message's
   %%  tag, i.e. an atom. Process identifiers depend on the messaging back-end
   %%  being used but can also wrap up an arbitrary cookie that can be used to
   %%  tell messages with the same tag apart, e.g. when they are used for
   %%  different purposes.
  -%%  
  +%%
   %%  Sending messages to so-tagged process identifiers works seamlessly, e.g.
   %%  a server receiving message {tag, SourcePid} can reply with
   %%  comm:send(SourcePid, {tag_response}). On the receiving side (a client),
   %%  a message of the form {Message, Cookie} will then be received, e.g.
  -%%  {{tag_response}, Cookie}. Pids with cookies can be created using 
  +%%  {{tag_response}, Cookie}. Pids with cookies can be created using
   %%  this_with_cookie/1.
   %% @end
   %% @version $Id$
   -module(comm).
  -
   -author('schuett@zib.de').
   -vsn('$Id$').
   
   -include("transstore/trecords.hrl").
   -include("scalaris.hrl").
   
  --export([send/2, send_local_after/3 , this/0, get/2, send_to_group_member/3,
  -         send_local/2, make_global/1, make_local/1, is_valid/1, is_local/1,
  -         get_msg_tag/1, this_with_cookie/1, self_with_cookie/1]).
  +%% Sending messages
  +-export([send/2, send_local/2, send_local_after/3, send_to_group_member/3]).
  +%% Pid manipulation
  +-export([make_global/1, make_local/1]).
  +-export([this/0, get/2, this_with_cookie/1, self_with_cookie/1]).
  +-export([is_valid/1, is_local/1]).
  +%% Message manipulation
  +-export([get_msg_tag/1]).
   
   -ifdef(with_export_type_support).
   -export_type([message/0, message_tag/0, mypid/0, erl_local_pid/0]).
  
positive.code: -ifdef(BUILTIN).
  -type mypid_plain() :: erl_pid_plain().
  -endif.
  
  
  %% -type erl_pid_with_cookie() :: {erl_pid_plain(), c, cookie()}.
  %% -type erl_pid() :: erl_pid_plain() | erl_pid_with_cookie().
  
negative.code: -type erl_local_pid_plain() :: pid() | reg_name().
  -type erl_local_pid_with_cookie() :: {erl_local_pid_plain(), c, cookie()}.
  -type erl_local_pid() :: erl_local_pid_plain() | erl_local_pid_with_cookie().
  -type erl_pid_plain() :: erl_local_pid_plain() | {reg_name(), node()}. % port()
  
  -ifdef(TCP_LAYER).
  -type mypid_plain() :: {inet:ip_address(), integer(), erl_pid_plain()}.
  