In Go, you can put a comment above the package clause in any of a package's source files (including an otherwise empty one) and the tools will pick it up. e.g.:

In Go, you can put a comment above the package clause in any of a package's source files (including an otherwise empty one) and the tools will pick it up. e.g.: http://golang.org/src/pkg/fmt/doc.go http://golang.org/src/pkg/fmt/doc.go -> http://golang.org/pkg/fmt/ http://golang.org/pkg/fmt/