If you have created an intersting or useful lesson, you can share
the cards with other users. Put all cards back into the unlearned
pile by selecting File
Reset Lesson...
For some bits of information, it would be useful to simply reverse
the sides of the cards instead of creating a whole new set. (Countries
and their capitals, for instance.) You can flip the sides of a card
by selecting File
Flip Card Sides.... This is only helpful
in lessons where there is a one to one relation between the questions
and the answers.