In response to blip #127050
Watsit said:
When I upload posts that have separate descriptions and alt-texts, I place the alt-text underneath the description in a [spoiler] ... [/spoiler], which hides it until the user hovers on it similar to the original alt-text behavior (a [section] ... [/section] requires clicking and takes up more space, which I find a bit annoying for something that's only a couple of lines; it's more work to see, and even the closed section can sometimes end up larger than the text it's holding).
I was thinking that it'd be better to put it as a note, that'd be the closest analogue.