Re: [Trisquel-users] how to save these documents in a free format

[legimet . calc]

XFA forms are not part of the standard and aren't supported by any free PDF  
reader. However, I usually find that in such documents, the forms work. I  
think XFA adds some fancy features like rich text, but I think if you don't  
need those, Okular should work fine. You can also use Okular's annotations  
(press F6 or Tools->Review) if you find that you can't type in a field.