replaced with your own identifying information. (Don't include
      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a
      file or class name and description of purpose be included on the
      same "printed page" as the copyright notice for easier
      identification within third-party archives.

pkg fmt, func Sscanf(string, string, ...interface{}) (int, error)
pkg fmt, func Sscanln(string, ...interface{}) (int, error)
pkg fmt, type Formatter interface { Format }
pkg fmt, type Formatter interface, Format(State, int32)
pkg fmt, type GoStringer interface { GoString }
pkg fmt, type GoStringer interface, GoString() string

pkg go/doc, type Note struct, Pos token.Pos
pkg go/doc, type Note struct, UID string
pkg go/doc, type Package struct, Notes map[string][]*Note
pkg go/doc, var IllegalPrefixes []string
pkg go/format, func Node(io.Writer, *token.FileSet, interface{}) error
pkg go/format, func Source([]uint8) ([]uint8, error)
pkg go/parser, const AllErrors = 32
pkg go/parser, const AllErrors Mode
pkg go/parser, const DeclarationErrors = 16