m.roth at 5-cent.us wrote: > Yep, as well as .xlsx > > But, I mean, you know all the *pressing* and Important reasons that M$ had > to change the file format.... > FWIW, the new formats are XML based, albeit compressed. in most theories, this is a good idea for portability. the old file formats were proprietary, complex and full of ugliness from 20 years of extensions and variations (.DOC was used by MS Word for MSDOS circa 1985). Yes, I know, MS did their own XML 'open' document format, not the one everyone else is using, but at least being XML, its readily decodable.