well, after the er publishers had approached me and, and asked me if i would be interested in doing this book er the next thing to do was actually get hold of all the ordinance survey maps for oxfordshire, er you know, quite a big county, so er once we'd done that er the next thing to do was to actually just work out exactly where we wanted the walks to be, and they've obviously, for commercial reasons they've got to be fairly evenly spread throughout the county, but you can tell quite quickly and quite easily by looking at an ordinance survey map, you know, where all the paths are, they're all clearly marked, er public footpaths, public bridleways, that sort of thing, and the next step was to actually create from the maps, circular walks to fit in with the requirement.