anchor.diff:                    Value -> {Process, Key, Value}
                 end || {Process, Key} = TableIndex <- TableIndexes],
       comm:send(SourcePid, {get_rrds_response, MyData}),
  +    State;
  +
  +on({get_rrd_keys, SourcePid}, {Table, _} = State) ->
  +    Keys = get_all_keys(Table),
  +    comm:send_local(SourcePid, {get_rrd_keys, Keys}),
       State;
   
   on({web_debug_info, Requestor}, {Table, _ApiTxReqList} = State) ->
  
positive.code: -spec get_check_timeslots_interval() -> 10000.
  get_check_timeslots_interval() ->
      10 * 1000. % every 10s
  
negative.code: % reporting to the monitor for manually-maintained rrd records
  -export([check_report/4]).
  
  -export([get_rrds/2
           , get_rrd_keys/0
           , get_rrd_keys/1
          ]).
  
  -ifdef(with_export_type_support).
  -export_type([key/0]).
  