[Boost-users] [fusion] [doc] documentation comment

These lines in the Organization | Layers section of the fusion documentation baffle me: 'Each module has its own header file placed in the same directory with the actual module-directory. For example, there exists "boost/fusion/support.hpp" in the same directory as "boost/fusion/support".' I can see a "boost/fusion/support.hpp" file as well as a "boost/fusion/support" subdirectory. If I look at "boost/fusion/support.hpp" it includes a number of header files in the "boost/fusion/support" subdirectory. But what the two lines quoted in the documentation above are saying eludes me. If it is saying what I discovered, it is not explaining things correctly.