Quite impressive, I didn't get it at first because I thought it was just MDX. Then I saw that there were changes in the video such as "```js focus=2,4[9:30],6", ans I saw that the code in the video was highlighted differently, then I understood the product. It's a way to annotate code more deeply than just with MDX. You need to make that much more explicit IMO, it needs to be quite clear when people read the site. I…
I could eventually figure out what it was doing but the speed of the videos flipping between examples looks like it was set by people who already knew what the message was, rather than for people who don't know it (yet)