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
pkg log, const Ltime ideal-int
pkg log, func Fatal(...interface{})

pkg io, type ByteWriter interface { WriteByte }
pkg io, type ByteWriter interface, WriteByte(uint8) error
pkg io, var ErrNoProgress error
pkg log, const Ldate = 1
pkg log, const Llongfile = 8
pkg log, const Lmicroseconds = 4
pkg log, const Lshortfile = 16
pkg log, const LstdFlags = 3
pkg log, const Ltime = 2
pkg log/syslog (darwin-386), const LOG_ALERT = 1