### - u -

- Undef : libwps::MultiplanParserInternal::Zone
- UNKNOWN : libwps_tools_win::Font
- Unknown : LotusGraphInternal::ZoneMac , LotusGraphInternal::ZonePc , LotusGraphInternal::ZoneWK4 , Quattro9GraphInternal::Graph , QuattroGraphInternal::Graph , WPS4ParserInternal::SubDocument
- UNKNOWN : WPS8ParserInternal::Frame
- Unknown : WPS8ParserInternal::SubDocument , WPS8TextInternal::Object
- UnknownError : libwps_OLE::IStorage