Hi Greg, I would use different line types for different zoom levels like this: waterway=canal [0x18 resolution 20-22 continue] waterway=canal [0x1f resolution 23 ] Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von greg crago <gregcrago@gmail.com> Gesendet: Freitag, 13. Januar 2017 02:34:09 An: Development list for mkgmap Betreff: [mkgmap-dev] Want to make one map from individual maps with different details I noticed that Garmin City Navigator uses different thickness of linetype as you zoom out. I can create 2 different TYP files (filename.txt) to be used with my mkgmap command and still use the same style files, but I do not know how to combine these different maps and how to specify at what zoom levels each map is to be visible. Example: Zoom level 0-2 (detailed map with wide roads 'detailed.img') Zoom level 3-5 (overview map with thinner lines and some features removed 'overview.img) How exactly to I combine these 2 maps into one 'combo' map. I know the file size will double Do I use GmapTool? Greg