IGES importer.
push_back(const entity_ptr & ptr) -> voidemplace_back(entity_ptr && ptr) -> voiddump(std::ostream & out) -> voidreal_filename(const std::string & rhs) -> voidmodified(const timestamp & rhs) -> voidcreated(const timestamp & rhs) -> voidprologue(const std::string & rhs) -> voidmax_coordinate(Real rhs) -> voidunit(Unit rhs, const string & name) -> voidunit(Unit rhs) -> voidreal_filename() const -> const std::string &modified() const -> const time_point &created() const -> const time_point &organisation() const -> const std::string &author() const -> const std::string &prologue() const -> const std::string &clear() -> voidwrite(std::ostream & out) const -> voidread(std::istream & in) -> voidoperator=(Graphics &&) -> Graphics &Graphics(Graphics &&)operator=(const Graphics &) -> Graphics &Graphics(const Graphics &)~Graphics()Graphics()operator>>(std::istream & in, Graphics & rhs) -> std::istream &operator<<(std::ostream & out, const Graphics & rhs) -> std::ostream &