2.3.1 Whitespace characters

2.3.2 Special escape sequences

For any character that has a special escape sequence (, \", \, \b,\f, , \r, \t, \v), that sequence is used rather than thecorresponding numeric escape (e.g \x0a, , or \u{a}). Legacy octalescapes are never used.

2.3.3 Non-ASCII characters

Tip: In the Unicode escape case, and occasionally even when actual Unicodecharacters are used, an explanatory comment can be very helpful.