> Octals must start with zero and then o/O literals. No, the o/O is optional (hence in square brackets), only the leading zero is required. All of these are va

> Octals must start with zero and then o/O literals. No, the o/O is optional (hence in square brackets), only the leading zero is required. All of these are valid octal literals in Go: 0600 (zero six zero zero) 0_600 (zero underscore six zero zero) 0o600 (zero lower-case-letter-o six zero zero) 0O600 (zero upper-case-letter-o six zero zero)