Some Google search results have special "navigation" items right underneath their descriptions. Sometimes it even separates the query string from the URI and puts (an) arrow(s) in between. I’m sure you’ve all stumbled upon that some time.
Here’s a picture so you get an idea of what I’m talking about:

(source: gyazo.com)
Now my question:
Is there anything in terms of coding/markup one has to do to get Google to display one’s search result like that? I’m already using pretty URLs by the way.
Note: I’m currently working on a website and it isn’t online yet – I just want to make sure I do as many things as possible the right way.
http://www.google.com/support/webmasters/bin/answer.py?hl=en&answer=47334