> They are using an xml based format which can be extended to anything.Oh, I didn't know this part!>> But, not everyone uses flashcard programs only for plain vocabularies.>What for then? Can you give us examples?Well.... I sometimes need to use them for mathematical formulas, maps and almost everything I want to learn!>I think Parley can easily be extended tooIt seems Parley is using a richer library than I thought! and it has the potential to improve a lot. That's great ;)