load (draw);

draw2d (
  xrange = [-4.5,4.5],
  yrange = [-4.5,4.5],
  head_length = 0.4,
  line_width = 3,
  color = red,
  vector ([0,0], [3,0]),
  color = blue,
  vector ([0,0], [-3,0]),
  color = green,
  point_size = 2,
  point_type = circle,
  points ([[0,0]]),
  head_length = 0.1,
  color = black,
  line_width = 1,
  vector ([-4.5,0], [9.0,0]),
  vector ([0,-4.5], [0,9.0]),
  /* */
  xaxis = true, xtics_axis  = true, 
  yaxis = true, ytics_axis  = true,
  xtics = [-4, 2, 4],
  ytics = [-4, 2, 4],
  user_preamble = ["set noborder"],
  border = false,
  dimensions = [500, 500],
  file_name = "kraft1",
  terminal = png
);