ANSI Common Lisp   22 Printer   22.3 Formatted Output   22.3.2 FORMAT Radix Control

22.3.2.3 Tilde B: Binary

This is just like ~D but prints in binary radix (radix 2) instead of decimal. The full form is therefore ~mincol,padchar,commachar,comma-intervalB.

~B binds *print-escape* to false, *print-radix* to false, *print-base* to 2, and *print-readably* to false.