anchor.diff:      {noreply, S};
   
   handle_info({nodeup, Node}, S0) when S0#state.connect_all ->
  -    IsKnown = lists:member(Node, S0#state.known) or
  +    IsKnown = maps:is_key(Node, S0#state.known) or
                 %% This one is only for double nodeups (shouldn't occur!)
                 lists:keymember(Node, 1, S0#state.resolvers),
       ?trace({'####', nodeup, {node,Node}, {isknown,IsKnown}}),
  
positive.code:     {reply, true, S};
  
  handle_call(get_known, _From, S) ->
      {reply, S#state.known, S};
  
  handle_call(get_synced, _From, S) ->
      {reply, S#state.synced, S};
  
negative.code: %%
  %% Here the name clashes are resolved.
  %%========================================================================
  handle_cast({resolved, Node, HisResolved, HisKnown, _Unused, 
               Names_ext, MyTag}, S) ->
      %% Sent from global_name_server at Node.
      ?trace({'####', resolved, {his_resolved,HisResolved}, {node,Node}}),
  