anchor.diff:  %%
   %% -------------------------------------------------------------------
   
  -%% @doc Common library utility funcions
  +%% @doc Common library utility functions
   -module(nklib_util).
   -author('Carlos Gonzalez <carlosj.gf@gmail.com>').
   
  
positive.code:     List ++ [Term];
  append_max(Term, [_|Rest], _) ->
      Rest ++ [Term].
  
  
  %% @private
  
negative.code: -export([to_atom/1, to_existing_atom/1, to_ip/1, to_host/1, to_host/2]).
  -export([to_lower/1, to_upper/1, to_capital/1, to_binlist/1, strip/1, unquote/1, is_string/1]).
  -export([bjoin/1, bjoin/2, words/1, capitalize/1, append_max/3, randomize/1]).
  -export([hex/1, extract/2, delete/2, defaults/2, bin_last/2, find_duplicated_terms/1]).
  -export([cancel_timer/1, reply/2, demonitor/1, msg/2]).
  -export([add_id/2, add_id/3]).
  -export([base64_decode/1, base64url_encode/1,  base64url_encode_mime/1, base64url_decode/1]).
  