An ISO-9660 variant developed by Microsoft at the same time as Joliet. Romeo offers 128 character filenames but unlike Joliet, maintains no backwards compatibility with DOS. Only one filelist is maintained, so only Windows 95, 98, NT, ME, and 2000 can properly read this filesystem. Since it is not an ISO standard, and has not even been submitted, some companies (notably Apple) have no plans to support it.