Hi List, I have some questions related to the splitting and rendering of bigger areas of the sea. For instance when there is no land or coastline at this tile 97800427 (1) on my map it is rendered as 'land' Maybe because I use the floodblocker in my generate-sea: extend-sea-sectors,close-gaps=6000,floodblocker,land-tag=natural=background Do I actually need to use the floodblocker parameter if I also use coastlinefile=coastlines_europe-latest.osm.pbf ? Or can I use some extra options for the floodblocker so that it recognize those empty areas? Another issue is that the splitter generates a comment mark # in the description field if it doesn't find a city from the geonames-file mapname: 97800427 # description: OSM Map input-file: 97800427.osm.pbf This will lead to a description of the previous tile, which isn't quite in the same area. Suggestion for improvement is not to add a # sign, better leave it "OSM Map" in the sea (or sparsely populated areas without towns) than for instance "London" Or is there a trick for this (I only know search "# description" and replace for "description") (1) http://img17.imageshack.us/img17/3153/seaq.jpg