Hi I've noticed that all imgs created with mkgmap do not it appears to use offset RGN 0x55 with length at RGN 0x68. And yet,I have seen cases where this offset is not zero and seems to point to a block within RGN showing some elements with longitude and latitude delta. I might be wrong but does this imply that the purpose of this block is still not fully understood? Regards Nick -- View this message in context: http://gis.638310.n2.nabble.com/RGN-pointers-not-used-by-mkjmap-tp6754168p67... Sent from the Mkgmap Development mailing list archive at Nabble.com.