Hi, > No need for ids or ordering. > > <area id="1234"> > <tag k="landuse" v="industrial" /> > <outer> > <nd ref="1"/> > <nd ref="2"/> > <nd ref="3"/> > </outer> > <inner> > <nd ref="4"/> > <nd ref="5"/> > <nd ref="6"/> > </inner> [...] True, but at least internally some kind of ID would be required to use it in the area_nodes table. Bye Frederik