So practically making the top and middle tracks oneway top outbound , middle inbound ? Thanks . I ' ll try this at home . <| sep |> It ' s a sunshade image based on elevation , not elevation itself . Sunshade images are used to make DEM ' s pop out without using crazy vertical exaggeration . <| sep |> That ' s a bad idea . We know that schools in Indonesia are VERY varied in terms of quality . If this is how it goes , that the government wants to abolish UN , how can we know that a school ' s graduates have cleared the basic skills that being a high school student requires ? What stops schools from just letting everyone graduate with a high school diploma , even those who are dumb as bricks or lazy beyond compare ? So this means every students can just sit down for three years and graduate high school ? We need a standardised national exam .