code: func OpenSequential(name string) (*os.File, error) {
  	return OpenFileSequential(name, os.O_RDONLY, 0)
  }
docs: // OpenSequential opens the named file for reading. If successful, methods on
  // the returned file can be used for reading; the associated file
  // descriptor has mode O_RDONLY.
  // If there is an error, it will be of type *PathError.