UOF

UOF (Uniform Office Format, or sometimes Unified Office Format) is a national standard of the People's Republic of China for word processing, spreadsheet, and presentation files. It uses compressed XML. Support is spotty, and LibreOffice is even considering dropping its limited support for the format.

Sample files

 * Sample file, from LibreOffice bug thread, and originally from Peking University

Software

 * ODF-UOF Converter

Links

 * Wikipedia article
 * Message thread on whether to keep support for it in LibreOffice
 * LibreOffice bug on inability to open UOF file