By the way, I think this is rude. There is a language factor here, so 'Collectingchris' I think probably did not intend to be rude and I for one, would give him the benefit of the doubt....but this is a forum for GENTLEFOLK, and I am certain that the moderators, the sorts of people who once made me stand at attention for 2 hours straight (with a pack and wool beret on) in the pouring-down, winter rain at Colchester, will not allow rudeness here. This is a most informative thread and I am grateful for it. Robert E. Lee, a great man who fought for a bad cause, once said: "A gentleman never intentionally causes another any offense". It's good advice in the anonymous world of cyberspace and keeps many different sorts of people on a friendly footing.