> The industry doesn't really use XLSX or XLS because they're unreliable to parse without Microsoft's Office libraries XLS yes, however XLSX is just easy to pa

> The industry doesn't really use XLSX or XLS because they're unreliable to parse without Microsoft's Office libraries XLS yes, however XLSX is just easy to parse if you document only contains simple types. of course with embedded mathml/wordml it gets a little bit wierd.