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PDF
PDF files are created mainly using Adobe Acrobat, but Acrobat Capture and other Adobe products also support their creation, as do third-party products such as PDFCreator, OpenOffice. PDF files typically contain product manuals, brochures, magazine articles, or flyers as they can embed fonts, images, and other documents. But since they are designed to reproduce page images, and the text cannot be re-flowed to fit the screen width, PDF files designed for printing on standard paper sizes are hard to view on screens with limited size or resolution. Adobe has addressed the issue of people viewing PDF files on smaller screens as are found on PDAs (Personal Digital Assistants).
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