(Forwarding to list) Am Friday 23 January 2009 17:28:17 schrieben Sie: > As I understood the text of the wiki when I first started, layer 0 is > the general level of the terrain, so levels 1, 2, 3, 4, 5 are above > the ground on successively higher bridges, and -1, -2, -3, -4, and -5 > in successively deeper trenches. >
Indeed, that's what the wiki page says. Unfortunately I cannot find the place where the discussion took place when the feature was introduced (probably before today's "standardization process"); I'm pretty sure that this was not intentional. One could argue that because the default is layer=0, the natural surface would be in this layer. However, we do not model the natural surface, so this seems to be a completely arbitrary limitation. Lacking a definition for "natural surface", there isn't even an application where this information could be utilized. Of course it does no harm either, so this is probably just nitpicking. Regards, Marc
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