The docs (and the source) suggests that the overflow text is simply the return value of the paragraph() method.  Have you tried 

my $overflow_text = $txt->paragraph("$paragraph", 40 /mm, 70, align =>
+ "left" );

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In reply to Re: PDF::API2 Paragraphs and Overflow Text by almut
in thread PDF::API2 Paragraphs and Overflow Text by dickieb

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