title: Use iTextSharp to merge several A5 pages into A4 pages
body: <p>I generate several A5 pdfs and i now want to create a single batch pdf however the batch pdf will be A4 pages so i want to merge 2 of the pdfs per page.  How to i merge 2 A5 pdfs into a single A4 sheet.  I'm using iTextSharp to create the pdfs.</p>