I really like using the !!spoiler effect!! for revision cards: the answer remains covered until I roll my mouse over the text. This is much better than merely reading the answer, because it prompts me to try to recall the information. Would you be able to implement a similar effect for displayed $\LaTeX$? Equations that I want to remember often don’t look great if they’re written inline. Thanks
Multi-line spoilers is a great idea. Not sure our current markdown parser can support it, but I will look into it!