To reply to this message or start a new topic please email: BUPS-DIS@bups.org Hi Alice, Do forward David's paper to me at david@saitch.net and I will read it through, go through your points and make my own suggestions. Cheers, David Browse or search the BUPS-DIS archives, or unsubscribe from the mailing list at: http://www.bups.org/mailinglist.htm