pkg io, type ReadSeekCloser interface, Close() error
pkg io, type ReadSeekCloser interface, Read([]uint8) (int, error)
pkg io, type ReadSeekCloser interface, Seek(int64, int) (int64, error)
pkg io, var Discard Writer
pkg io/fs, const ModeAppend = 1073741824
pkg io/fs, const ModeAppend FileMode
pkg io/fs, const ModeCharDevice = 2097152
pkg io/fs, const ModeCharDevice FileMode
pkg io/fs, const ModeDevice = 67108864

pkg io/ioutil, func TempDir(string, string) (string, error)
pkg io/ioutil, func TempFile(string, string) (*os.File, error)
pkg io/ioutil, func WriteFile(string, []uint8, os.FileMode) error
pkg io/ioutil, var Discard io.Writer
pkg log, const Ldate ideal-int
pkg log, const Llongfile ideal-int
pkg log, const Lmicroseconds ideal-int
pkg log, const Lshortfile ideal-int
pkg log, const LstdFlags ideal-int