ANSI Common Lisp   22 Printer   22.3 Formatted Output

22.3.7 FORMAT Control-Flow Operations

22.3.7.1  Tilde Asterisk: Go-To
22.3.7.2  Tilde Left-Bracket: Conditional Expression
22.3.7.3  Tilde Right-Bracket: End of Conditional Expression
22.3.7.4  Tilde Left-Brace: Iteration
22.3.7.5  Tilde Right-Brace: End of Iteration
22.3.7.6  Tilde Question-Mark: Recursive Processing