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I have just sent to the list, by accident, an unfinished message that I had decided not to complete. This was because the evidence that (I thought) would support it turned out to do no such thing. sorry about that Chris ******************************************* Professor Chris Rust Art and Design Research Centre Sheffield Hallam University UK [log in to unmask] tel +44 114 225 2706 fax +44 114 225 2603 Psalter Lane, Sheffield S11 8UZ, UK