Software that converts XML and HTML documents into the PDF format from YesLogic Pty. Ltd., Melbourne, Australia (www.princexml.com). With versions for Windows, Mac and Linux, Prince uses cascading style sheets (CSS) for both XML, HTML and XHTML input. Known for its comprehensive support of intricate page layout, Prince enables extremely complex documents to be converted accurately into PDFs. Prince is also used to create custom PDF documents on the fly, such as invoices and receipts.