Famously used to emulate generics before Go had them:

https://old.reddit.com/r/rust/comments/5penft/parallelizing_...

> type ImmutableTreeListᐸElementTᐳ struct { ... }

> If you look closely, those aren't angle brackets, they're characters from the Canadian Aboriginal Syllabics block, which are allowed in Go identifiers. From Go's perspective, that's just one long identifier.