1 dim x(10)
2 dim y(10)
4 for i=0 to 9
5 x(i)=121
6 y(i)=15
7 next
8 SCROLL 1,0
10 for i=0 to 9
13 d = RND % 3 -1
14 Y(i) = Y(i) + d
15 if y(i)<0 then y(i)=0
16 if y(i)>31 then y(i)=31
17 pset x(i),y(i),1
19 next
80 goto 8
