Footnotes and Folders in messages

I'd like to "roll up" some text into footnotes to reduce walls of text, so people could see a simple message and be able to click into footnotes to "unroll" a bigger message (like using parentheses for lengthy explanations) 💬.

Alternatively, the text could be rolled up into a "folder", like in TvTropes, to allow things like compact ascii art one could see by clicking, and re-click to roll back into a single line, making it much less spammy 😃 !

Either of these could dramatically improve the ability to convey complex ideas~ 🤔