[anyfoo]

I love this series. A minor point about the layout only: I know you are very fond of those tabbed boxes (as I've seen them in every such article of yours that I read over the years), and I bet they make a lot of sense when reading on a mobile device, but on my desktop browser with plenty of screen space I often wish they weren't there. I.e., I wish everything was always visible and maximally require (normal vertical) scrolling.

This is especially true for things you intend to compare. For example, I was awkwardly flipping between the "Xenon" and "Cell" tabs a lot, to compare the two block diagrams.