Any way to keybind 'hide thread' for Lemmy? (Windows/Firefox)

I visit this site probably more than I should, and when I browse, then come back a bit later to browse again, I'm seeing a LOT of repeat content.

The one and only feature I miss from that other site was being able to browse by reading a thread title to assess if its something I want to click on, if no hit 'H' to hide it, and it's gone; next one bumps up, and repeat.

So I'd skim by pressing H... H... H... H... "Ooh that one looks cool!" read the article, comment w/e, H... H... H... H... then I'd pop back in an hour later, and those threads would still be gone.

Unsure if that was a built-in feature or part of the RES thing. ...is there an RES -or- 'LES' for Lemmy?