* jalgermissen@topicmapping.com | | I agree but do you (or someone else) have some good references about | this issue? An excellent description of it can be found in section 1 of Marc de Graauw's first paper on topic maps: <URL: http://www.marcdegraauw.com/files/whatisis.pdf > -- Lars Marius Garshol, Ontopian <URL: http://www.ontopia.net > GSM: +47 98 21 55 50 <URL: http://www.garshol.priv.no >