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Ragnar Beer wrote Thanks a lot! It was VERY easy with this howto. Another reply I got was to search the archives. There I had a big problem: "dtml-tree sql" as keywords returned >2000 messages where not every message had both terms in it. I guess the search-engine ORed the terms. Does anyone know how to tell the search-engine to AND them?

Good to hear. I'd like opinions - I'd hoped to have this finished a lot earlier than I have, but I've been getting stuck on bugs (e.g. the treedisplay namespace hackery I posted to zope-dev). Should I put what's there now into the catalog so that people who search can find it? Or wait til it's finished...? it seems like it's a common enough query. that URL again... http://www.zope.org/Members/anthony/tree-coding-tricks Anthony -- Anthony Baxter <anthony@interlink.com.au> It's never too late to have a happy childhood.