ANSI Common Lisp   22 Printer   22.3 Formatted Output

22.3.2 FORMAT Radix Control

22.3.2.1  Tilde R: Radix
22.3.2.2  Tilde D: Decimal
22.3.2.3  Tilde B: Binary
22.3.2.4  Tilde O: Octal
22.3.2.5  Tilde X: Hexadecimal