It's using the <switch> tag for this

https://developer.mozilla.org/en-US/docs/Web/SVG/Reference/E...

However, like with many of these obscure features, I am not so sure it works well in practice. I have the Windows 11 laptop I'm viewing that SVG from set with support enabled for english, french and russian, and I'm getting, among most of the English tags, a few stray "Psychique" and "Привидение" types in the svg. I have no idea how it chooses which one to show, there.

Just a wild guess, but perhaps the order of the translations vary across cells. Perhaps the browser just picks the first one that matches your supported locales.

Oh that's really cool, I didn't know about this! I just linked to the wikimedia-hosted illustration, but that's a good perk too.

Wow thats very cool, i was puzzled at first as to why the pokemon types were in Finnish!