anchor.diff:  %% API
   -export([
            start_link/0,
  -         stop/0,
            set/1, set/4,
            unset/1,
            loggers/0,
  
positive.code: %%====================================================================
  start_link() ->
      gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).
  
  %% ----
  -spec stop() -> ok.
  
  stop() ->
      gen_server:cast(?MODULE, stop).
  
  %% ----
  -spec set(Name, Ident, Priority, Options) -> Result when
  
negative.code:     {reply, ok, State}.
  
  %% ----
  handle_cast(_Msg, State) ->
      {noreply, State}.
  
  