Hi Bill, Thanks for that.
Sounds like there's not been the required separation of generalisation and particularisation of this problem yet. In which case I've probably got some research and thinking to do. And as such those pointers of yours will be very useful grist to the mill! Thank you. Best regards Mark Stanton One small step for mankind... _______________________________________________ Post Messages to: ProFox@leafe.com Subscription Maintenance: http://leafe.com/mailman/listinfo/profox OT-free version of this list: http://leafe.com/mailman/listinfo/profoxtech ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.