execstr
  _Trak.Lat hex2asc !Trak.Lat
  _Trak.Lon hex2asc !Trak.Lon
  _Trak.Lat
  _Trak.Lon

  rot execstr
  _Trak.Lat hex2asc !Trak.Lat
  _Trak.Lon hex2asc !Trak.Lon
  _Trak.Lon sub abs exch _Trak.Lat sub abs add
dup logs
  _Sim.Choke gt