4 KudoZ points awarded for this answer. Comment: " It's really interesting the diversity of answers that come up in response to questions. But then that's one of the things that makes translating so interesting. Frankly, I was torn between choosing William's or Christopher's answer. You both used the word "guide", which I think fits well. Thanks to everyone - your comments have helped a lot. By the way, Lars, I am related to Ferdinand - distantly - he's a distant cousin."