Robert_Charlton - 7:58 pm on Nov 22, 2011 (gmt 0)
Sounds like you may be thinking of "breadcrumb navigation", which links back to the navigation trail by which you arrived at a page.
On this page, for example, up at the top you've got links up at the top linking back up the nav chain to...
Home / Forums Index / Google / Google SEO News and Discussion
For breadcrumbs to work, you've got to be fairly disciplined about how you structure your site.
I'm not sure that this is what you're asking about, but, if it is, there's a very recent discussion about it here....
Breadcrumb navigation by category - best practice
The discussion isn't exactly about what you're asking, but it may help answer your question.