Because MPL is not a boost library. MPL is under development, and will soon be under review. If it passes the review process, then it will become a boost library. On Sat, 12 Jul 2003, Ihsan Ali Al Darhi wrote: iad929> Hi... iad929> iad929> I downloaded Boost 1.28 but there's no MPL. Why? iad929> iad929> Mo iad929> ---------------------------------------------------------------------- Jeremy Siek http://php.indiana.edu/~jsiek/ Ph.D. Student, Indiana Univ. B'ton email: jsiek@osl.iu.edu C++ Booster (http://www.boost.org) office phone: (812) 855-3608 ----------------------------------------------------------------------