I think I've worked out how group is used, but I think the explanation is too brief. At the very least the double-negative in point one, "do not have a specified group with a non-empty value" requires really careful thought. Be seeing you, norm -- Norman Walsh <ndw@nwalsh.com> | He that shuns trifles must shun the http://nwalsh.com/ | world.--George ChapmanReceived on Friday, 9 April 2010 12:51:16 GMT
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