Henry, Steen, Thanks very much for your example finite state machines. I hadn't "got" before that (a) there doesn't have to be a 1:1 equivalence between states and occurrences of particles in the content model and (b) you can have several final states... both of which are obvious in hindsight :) Much appreciated, Jeni --- Jeni Tennison http://www.jenitennison.com/Received on Thursday, 13 June 2002 08:42:48 GMT
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