The option to reverse cards lets you study your cards in both directions. With this mode on, every card will automatically have a mirrored version.
Studying Reverse Cards
When you're studying, remember that the main card and its reverse may have different progress. They start learning independently, without affecting each other.
Editing Cards
Any changes you make to one card will also affect its reverse version.
Enable/Disable Reverse Cards
When you're creating flashcards, you'll find a toggle for Reverse Cards in editing mode. Once you flip it, the change will apply to all subsequent cards, saving you from toggling each time. But feel free to switch it off whenever you want.
If you change your mind later, simply go back to card editing and adjust the reverse setting as needed.