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  ANSI Common Lisp   22 Printer   22.3 Formatted Output   22.3.7 FORMAT Control-Flow Operations

22.3.7.1 Tilde Asterisk: Go-To

The next arg is ignored. ~n* ignores the next n arguments.

~:* backs up in the list of arguments so that the argument last processed will be processed again. ~n:* backs up n arguments.

When within a ~{ construct (see below), the ignoring (in either direction) is relative to the list of arguments being processed by the iteration.

~n@* goes to the nth arg, where 0 means the first one; n defaults to 0, so ~@* goes back to the first arg. Directives after a ~n@* will take arguments in sequence beginning with the one gone to. When within a ~{ construct, the "goto" is relative to the list of arguments being processed by the iteration.


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