Hi, Unlike most classes/functions in Boost.TypeErasure, the following http://www.boost.org/doc/html/boost/type_erasure/any_cast.html does not go to the reference for boost::type_erasure::any_cast, the proper link being http://www.boost.org/doc/html/boost/type_erasure/any_cast_idp758556752.html Problem is this seemingly autogenerated file name is unstable. For instance, for Boost 1.63 the link was http://www.boost.org/doc/libs/1_63_0/doc/html/boost/type_erasure/any_cast_id... in develop it is http://www.boost.org/doc/libs/develop/doc/html/boost/type_erasure/any_cast_i... and in master it is http://www.boost.org/doc/libs/master/doc/html/boost/type_erasure/any_cast_id... which makes it impossible to refer to this section of Boost.TypeErasure documentation from other pages. Maybe this can be fixed? Thank you Joaquín M López Muñoz