There are three test data directories: - 'data-test': These files are valid META files that test *specific* conversions and are expected to have specific data in them during testing. Do not put new test data here unless you are sure it meets all requirements needed to pass. - 'data-valid': These files are valid META files. Some may be improved by the Converter (particularly upconverting from ancient specs). - 'data-fixable': These files are bad META files that fail validation, but can be fixed via the Converter. - 'data-fail': These files are bad META files that fail validation and can't be fixed.