Andy, I thank you for your help. I saved relation 23309 as an .osm file, copied your relation details just as you presented them into the standard mkgmap relations file, created a new lines file with just what you presented plus a Garmin polyline code and resolution, created an appropriate .typ file and ran a mkgmap batch file based just upon those elements to create a gmapsupp.img. It worked perfectly! My requirement came just as I was wondering from other things I was reading how relations were incorporated with other mapsets into something that could be loaded to a GPSr. I could not have done it by myself, and I am constantly surprised at how few answers result from users' enquiries yet how often, too, just one answer is sufficient. Yet another piece of knowledge under my belt; OSM learning and achievement is never-ending thanks to people like you! Incidentally, when I type 'SomeoneElse' as an OSM user, it is not recognised. How do I find you? With regards, Bob