Hi Andrzej, I have no idea about the details. I just know these lines in mkgmap source PolishMapDataSource.java: ... if (addBackground && !havePolygon4B) addBackground(); ... if(type == 0x4b) havePolygon4B = true; ... ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Andrzej Popowski <popej@poczta.onet.pl> Gesendet: Mittwoch, 17. Oktober 2018 13:13 An: mkgmap-dev@lists.mkgmap.org.uk Betreff: Re: [mkgmap-dev] City search problem Hi Gerd, I'll try to do some tests with mp, when I find some time. I wasn't aware, that mkgmap accept background with this format. Does mkgmap process statement "background=Y"? I wonder if background object in img has any distinctive attributes. -- Best regards, Andrzej _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev