please include function stefansChat_onLine.

// n = max number of lines to get (from most recent)
static L<ChatMsg> stefansChat_readHistory_fullMsgs(int n) {
  int b = stefansChat_onLine_firstRead;
  if (b < 0) b = stefansChat_n();
  int a = max(0, b-n);
  ret stefansChat_readHistory_fullMsgs(a, b);
}
  
static L<ChatMsg> stefansChat_readHistory_fullMsgs(int a, int b) {
  L<Map> msgs = (L) safeUnstruct(loadPage("http://botcompany.de/1008998/raw/msgs-from-to?a=" + a + "&b=" + b));
  ret mapsToObjects(msgs, ChatMsg);
}