Question about formatting

[susanreads]

I hope this is a suitable place to ask: Is there a recognised semantic markup for distinguishing visuals from audio in a transcript? I've been using [brackets like this], but I doubt screen-readers pronounce them. I can make text appear in italics with em or q or cite tags, but I don't know whether any of those are distinguishable in other formats.

Comments

[lightgetsin]

A standard, no, not as far as I know. Brackets are not part of the baseline set of screenreader punctuation articulations, though they can of course be easily added by people who want to use them. Same thing for italics, using whichever markup. I have italics turned on but not brackets because I use the first and not the second.