gr.open 0, 0, 0, 0
!gr.orientation 0
gr.screen w,h


gr.set.antialias 0
gr.set.stroke 5

r=255:g=255:b=255:a=255


for y=0 to 400 step 10
for x=0 to 400 step 10

gr.color a,r,g,b

gr.point n,x,y

gr.render

next x
next y

pause 10000