code: def test(anchor):
      im = Image.new("RGBA", (200, 100), "white")
      d = ImageDraw.Draw(im)
      d.line(((100, 0), (100, 100)), "gray")
      d.line(((0, 50), (200, 50)), "gray")
      d.text((100, 50), f"{anchor} example", "black", font, anchor)
      return im
  
label_desc: Use image node_id 1 for calling a global function with example usage: test(anchor) and returns: im