Yes, it would be helpful if we mention where we can get the hgt files, a few examples of the dem-dist values and an explanation how to calculate it. This information is already there but mentioned in the many updates of the branch versions. I use http://www.javawa.nl/srtm/index.php?lang=nl because it has a good overview map, the disadvantage is that you need to download every single tile manually and not in one big download. Maybe there are better alternatives? --------------------- Gerd wrote: Hi all, with r4093 I've merged the dem-tdb branch into trunk. I think it would be good to mention this in the "Latest news" on [1] , maybe with one or two screen shots, but I have no idea how to write this "from a users view". Do we need a how-to that describes the sources for hgt files and maybe more about the new options? It would be great if somebody could help with that. Gerd [1] http://www.mkgmap.org.uk/