Tangent: that's really cool that wikipedia has interactive graphics and not just static images. In fact, and maybe I'm stupid, but I had no idea that svgs could be interactive until this moment. I thought they were just a vector image format.
Ignore that the Wikipedia page currently calls it "a recommended means[1][2][3] of animating SVG-based hypermedia" (lol). It's a complex feature that browsers have been dragging along for years while nobody's using it. Though it seems that Chrome is finally taking the initiative of dropping support, or at least discouraging its use.
I too didn't realize that this was possible in SVGs. It's awesome.