Perl's C-style for loop works like the corresponding while loop; that means that this:

        for ($i = 1; $i < 10; $i++) {
            ...
        }
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is the same as this:

        $i = 1;
        while ($i < 10) {
            ...
        } continue {
            $i++;
        }
[download]

NB I have to admit I practically never use continue ...