Hi Gerd A good suggestion but I'm afraid its not what is happening. I forgot to mention that I have checked my style files just in case I have the boundary plotted else where with a 'continue' I've even changed the type number to a higher one to make absolutely sure that the boundary lines are unique. What is happening is that within the resolution 24 subfile I get the same bitstream starting with the same unique type number Have tried it with the latest default style and get the same effect. if you look at offsets 3DA2 , 3DE6 , 3D2A 3E6E , I get the same 1C line, same bitstream etc, but with different lbl pointers - some don't seem to point to any text. It looks as if there might be a limit to the length of a caption within lbl so that it has to be split ? Have posted img at : www.pinns.co.uk/mps/map.img regards nick -- View this message in context: http://gis.19327.n5.nabble.com/multiple-boundary-lines-tp5817950p5818215.htm... Sent from the Mkgmap Development mailing list archive at Nabble.com.