I've been looking at the structure of Phil Bouchard's prototype block_ptr library and am wondering if the structure of the header files is optimal/Boost_Standard/wrong. http://www.boost.org/doc/libs/1_60_0/more/getting_started/windows.html describes the Boost structure, but looks well out of date to me. (Can/should anyone still update this to reflect Modular Boost?) And looking through libraries, there seems some variation. I'm asking for views on what the best structure should be, (or if it doesn't matter much?) Some libraries have a structure modular_boost/libs/algorithm/include/boost/algorithm which contains algorithm.hpp and string.hpp that one might use directly. Others like asio contain /asio and just a asio.hpp that includes (all?) other headers. Others like multiprecision contain just a single folder modular_boost/libs/algorithm/include/boost/multiprecision but no other header files, not even forwarding header(s). So should the structure be that all headers (except forwarding headers - or a single header) are within modular_boost/libs/some_library/include/boost/some_library/ so the user should include with #include <boost/some_library/some_header.hpp #include <boost/some_library/other_header.hpp ... or to get everything useful #include <boost/some_library/some_library_fwd.hpp> possibly with a /detail folder containing headers that should not be called by users. Just checking... Paul --- Paul A. Bristow Prizet Farmhouse Kendal UK LA8 8AB +44 (0) 1539 561830