I just looked over this library (since Robert Ramey mentioned part of it as a solution to a different problem). I'm wondering how (future) Boost library code should implement serialization. Right now, the Serialization library contains code to serialize "shared_ptr" types. Should the Serialization library contain similar code for every potential Boost type, so should each type include the code? If the latter is the answer, then does: class my_type { friend class ::boost::serialization::access; //... }; need a forward (or full) declaration for "access" before it? Or does that only apply to template functions (or is it just template operators)[1]? Also, the Contents entries from "void_cast" to "BOOST_STATIC_WARNING" need to be raised a level so they don't look like child entries for "extended_type_info". And I think some of the demo programs could use a sprinkling of "std::auto_ptr". [1] I know there's at least one wacky friend combination that'll interpret a template function as a non-template function instead if you don't take proper precautions. -- Daryle Walker Mac, Internet, and Video Game Junkie darylew AT hotmail DOT com