func doReadLines(_data)
  // TODO
  if (isset(Stream))
    println('for ', fline, ' in ', Stream, ':')
    block.inclvl()
    event(onLine, fline)
    block.declvl()
    event(onEnd)
  end
end

func doStop(_data)
  // TODO
  if (isset(Stream))
    println('break')
  end
end

func Line
  return (fline)
end