id summary reporter owner description type status milestone component version severity resolution keywords cc 10060 Boost.Optional documentation doesn't say which header to include anonymous akrzemi1 I couldn't find information about which header files to include for Boost.Optional. Either it's not there, or possibly it's there but too hard to find (synopsis or examples would be a good place). Bugs closed Boost 1.58.0 optional Boost 1.55.0 Problem fixed