var unicode.Zl 2 uses unicode (current package) tables.go#L43: "Zl": Zl, tables.go#L3649: Zl = _Zl // Zl is the set of Unicode characters in category Zl (Separator, line).
The pages are generated with Golds v0.2.8-preview. (GOOS=darwin GOARCH=arm64)