seqdiag {
  activation = none;
  autonumber = True;
  endpoint;
  probe  => endpoint [label = "GET /index.html"];

  probe  -> outbox [label = "chan_outbox msg"];
  outbox -> http [label = "HTTP JSON POST"];
  http -> updater [label = "chan_update msg"];
/*
  browser => http [label = "GET /dash"] {
    http => updater [label = "fetch data"];
  }
*/
}

