anchor.diff:               , file         = ""           % file to write trace msgs to
                , file_size    = 1            % file size (per file [Mb])
                , file_count   = 8            % number of files in wrap log
  +             , debug        = false        % big error messages
   
                , trc          = []           % cannot be set by user
                , print_pid    = []           % cannot be set by user
  
positive.code:       case {Tag,Data} of
          {'call',{MFA,Bin}} ->
            case Cnf#cnf.print_calls of
              true -> 
                OutFun("~n~s <~p> ~P",[MTS,PI,MFA,Depth]),
                foreach(fun(L)->OutFun("  ~s",[L]) end, stak(Bin));
              false->
  
negative.code:       try
          starting(do_start(Cnf))
        catch
          C:R ->
            case {Cnf#cnf.debug,R} of
              {false,{X,Y,_}} -> erlang:display({X,Y});
              _               -> ?log([{C,R},{stack,erlang:get_stacktrace()}])
  
            end
        end
    end,
    exit(exiting).
  