At 12:20 PM 30/03/2003 +0100, you wrote:

>I am finding this discussion about Keylinks and Master/Detail very
>interesting, but I don't currently have all the background I need to fully
>understand it.
>
>Is there a definitive document which covers these topics?

Yes, they are explained in the Getting Started guide, in the section
"Thinking About Links".

Helen