How to iterate a boost property tree?

I am know approaching to boost property tree and saw that it is a good feature of boost libs for c++ programming.

Well, I have one doubt? how to iterate a property tree using iterators or similar?

In reference there is just an example of browsing the tree through:

BOOST_FOREACH

But is there nothing more? Something like an stl-like container? It would be a better solution, speaking about code quality....