static SS dm_markComputersControllableByMe() {
  new SS map;
  for (S computerID : dm_onlineComputerIDsWithoutMe()) {
    bool b = dm_canEvalAtAllOnOtherMachine(computerID);
    dm_callModule(dm_requireComputerNames(), 'setControllableByMe, computerID, b);
    map.put(computerID, yesNo_short(b));
  }
  ret map;
}