It's an old library... been using it for WakaTime since 2018 (5 years). It's very handy to highlight one feature on a page based on a url param, for example whe

It's an old library... been using it for WakaTime since 2018 (5 years). It's very handy to highlight one feature on a page based on a url param, for example when your FAQ wants to link directly to a mentioned setting. We don't like product tours because they're annoying, so we only display one highlight per page showing the first thing you should do when onboarding. Like a tooltip highlighting a button on the page, not a product tour.