[samwho]

Yes, this is one of the things I look back on as a weak point in the writing. I wanted to make this a lot more clear but by the time I'd gotten to this point in the article, I'd sort of coded myself into a corner with the visualisation code.

In another universe I'd hook in to the page scroll and highlight each block being referred to as I talk about it in the text. I'm probably not explaining that well here, but imagine something like the way this article works: https://pudding.cool/2017/05/song-repetition/.

[wizzwizz4]

Couldn't you highlight each block being referred to as you mouse over / click on relevant text? (The latter might not be terribly hard to do with <a> and CSS :target, if you can give the blocks ids.)

[samwho]

The blocks aren't HTML elements, they're drawn on to a canvas. It _could_ be possible regardless, though. I may revisit this. Thanks for the idea! :)