// In header: <boost/intrusive/options.hpp>
template<typename Tag>structtag{// member classes/structs/unions// @ template<class Base>structpack{// typestypedefTagtag;};};
Description
This option setter specifies the type of the tag of a base hook. A type cannot have two base hooks of the same type, so a tag can be used to differentiate two base hooks with otherwise same type