Pim et al, I’ve been updating some relevant use cases in the shared Google Doc , notably 36 and 37 whose order I reversed. I was attempting to better conform them to the DDDS / Service Locator model, but also making them a little more granular. Apologies for the lack of Powerpoint slides – they’d probably benefit from a more visual presentation, but I ran out of time. Off to bed for a couple of hours before we start! Roger