You can open wordperfect 5.1 (1989) in Office 2013 no problems. Numbers can't even open ODS files at all, destroys iWork 09 documents and pretty much sticks a

You can open wordperfect 5.1 (1989) in Office 2013 no problems. Numbers can't even open ODS files at all, destroys iWork 09 documents and pretty much sticks a fork in most xslx documents.