Header <ostream> implementation status Reference Implementation : Cannot implement with language itself. Need compiler support. Used C++ N STL : Partially implemented with C++ N : Fully implemented with C++ N : Not yet implemented Features Standard Implemented in Classes basic_ostream Functions operator<<(ss::basic_ostream) print(ss::ostream) println(ss::ostream) vprint_unicode(ss::ostream) vprint_nonunicode(ss::ostream) Manipulators endl ends flush emit_on_flush noemit_on_flush flush_emit