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## 22.3.8.3 Tilde P: Plural

If arg is not eql to the integer `1`, a lowercase `s` is printed; if arg is eql to `1`, nothing is printed. If arg is a floating-point `1.0`, the `s` is printed.

`~:P` does the same thing, after doing a `~:*` to back up one argument; that is, it prints a lowercase `s` if the previous argument was not `1`.

`~@P` prints `y` if the argument is `1`, or `ies` if it is not. `~:@P` does the same thing, but backs up first.

     (format nil "~D tr~:@P/~D win~:P" 7 1) =>  "7 tries/1 win"
     (format nil "~D tr~:@P/~D win~:P" 1 0) =>  "1 try/0 wins"
     (format nil "~D tr~:@P/~D win~:P" 1 3) =>  "1 try/3 wins"

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