Hello, matio claims to support version 4, 5 and 7.3 of MAT files, whereas the table on this page: https://www.mathworks.com/help/matlab/import_export/mat-file-versions.html says there are also versions 6 and 7 but no 5. Can someone explain why the difference and is there any version of MAT files that matio can't read? Thanks, Rafal