4 ms·I never knew there was a "past" button...by Splines 11y agoI never knew there was a "past" button...noobermin 11y agoOh dear, I'm coming up on two and a half years on HN (time flies!) and I didn't know either...boulos 11y agoDon't worry, it's recent and mostly just designed to help you figure out if you should flag an article as a dupe.