if #arg > 0 then
    filename = arg[1]
    lines = load_from_disk(filename)
  end
  table.insert(lines, '')

  drawingw = math.floor(screenh/2/40)*40

  drawingw = math.floor(screenh/2/40)*40

  if #arg > 0 then
    filename = arg[1]
    lines = load_from_disk(filename)
  else
    table.insert(lines, '')
  end