anchor.diff:  %%%
   %%% @author Michael Truog <mjtruog [at] gmail (dot) com>
   %%% @copyright 2013-2014 Michael Truog
  -%%% @version 1.3.2 {@date} {@time}
  +%%% @version 1.3.3 {@date} {@time}
   %%%------------------------------------------------------------------------
   
   -module(reltool_util).
  
positive.code:                         {ok, []} ->
                              applications_dependencies(Rest, As);
                          {ok, NextAs} ->
                              OtherAs = lists:foldl(fun(NextA, L) ->
                                  lists:delete(NextA, L)
                              end, As, NextAs),
                              case applications_dependencies(NextAs,
                                                             NextAs ++ OtherAs) of
                                  {ok, NewAs} ->
  
negative.code:            erlang:length(Applications), % no duplicates
      case applications_top_level(Applications, sets:new()) of
          {ok, Dependencies} ->
              TopLevelApplications = Applications -- sets:to_list(Dependencies),
              {ok, TopLevelApplications};
          {error, _} = Error ->
              Error
  