mode 21 x=50 repeat wait 1 rem repeat rem keyb=inkey(0) rem until keyb<>-1 colour 128+15:colour 0 print tab(x,0);"@" colour 128+0:colour 15 vdu 23,7,0,2,16;16;8;:rem scroll up 2, scroll down 3 x=x+(-1^rnd(4)) if x=0 then x=45 if x>45 then x=45 until false