ANSI Common Lisp   22 Printer   22.3 Formatted Output

22.3.9 FORMAT Miscellaneous Pseudo-Operations

22.3.9.1  Tilde Semicolon: Clause Separator
22.3.9.2  Tilde Circumflex: Escape Upward
22.3.9.3  Tilde Newline: Ignored Newline