Bear my slight knowledge of map formats and mkgmap... Besides, I do not know where other place to write to ask for help... Tried to find answers in the documentation but could not. I have an IMG file that wish to "cut" to an specific region. My best choice is to do it using Basecamp. So, I need to be able to load the map in Basecamp. I do it using GMaptool. Select the starting IMG, In Split I select files for mapsource, compile preview map, create tdb v3 if possible. GMaptools makes its magic, then calls mkgmap using: "java -jar "C:\folder\mkgmap.jar" --no-tdbfile --mapname=29067263 --output-dir="G:/Outfolder" "G:/Workfolder/mapset.mp"" Now, I can instal the map and basecamp can show it.... but.... a watermark with "Gmaptool preview" can be seen at the lowest left corner - not an issue no contents is shown at 500km zoom, neither 300, 200, 150, 100, nor 70; then, at 50kms, all is shown So, I am ready to run from CMD the command "java -jar "C:\folder\mkgmap.jar" --no-tdbfile --mapname=29067263 --output-dir="G:/Outfolder" "G:/Workfolder/mapset.mp"" but ... what can I change so that all content is shown from the 500kms scale? 50kms is too close to be workable .... TIA