computercraft image displayer

local targ={...}
os.loadAPI("wrap")
mon = wrap.attach("monitor")
mon.setTextScale(0.5)
mon.clear()
mon.setCursorPos(1,1)
if #targ==0 then
print("Type the filename of the image you would like to load:")
local filename = io.read()
else
  filename = targ[1]
end
image = paintutils.loadImage(filename)
term.redirect(mon)
paintutils.drawImage(image,1,1)