[Boost-users] [BGL] Implementing own graph types: Overloading in namespace boost or ADL?

The documentation does not explicitly mention which of both approaches is recommended to implement the free function of the graph concepts for a custom graph. Usually the graph will be in its own namespace. Should the free functions be declared in the boost namespace or in the same namespace as the graph? This also would determine if BGL functions should be called qualified or unqualified outside of namespace boost. -- Philipp Moeller GeometryFactory