Later versions of the software introduced new file formats. To support the new features, especially typographic, introduced with InDesign CS, both the program and its document format are not backward-compatible. Instead, InDesign CS2 introduced the INX (.inx) format, an XML-based document representation, to allow backwards compatibility with future versions. InDesign CS versions updated with the 3.1 April 2005 update can read InDesign CS2-saved files exported to the .inx format. The InDesign Interchange format does not support versions earlier than InDesign CS. With InDesign CS4, Adobe replaced INX with InDesign Markup Language (IDML), another XML-based document representation.[4]

Microsoft Word 2007's document types, interface, and some features--very nearly every aspect of this word processor--have changed. With this update, Microsoft Word 2007 becomes a more image-conscious application. New picture-editing tools help you deck out documents and play with fancy fonts. Bloggers and researchers may also benefit. It's easier to get a handle on document security, but those who only need basic typing features may not want to relearn the interface or deal with the new file formats.
Boxed editions of Microsoft Office 2007 include a decent, 174-page Getting Started guide. During the first 90 days, you can contact tech support for free, and help at any time with any security-related or virus problems also costs nothing. Beyond that, paid support costs a painfully high $49 per telephone or e-mail incident. Luckily, Microsoft's online help is excellent, although we're displeased that Microsoft and other software makers are increasingly promoting do-it-yourself assistance. We especially like the Command Reference Guide for Word, which walks you through where commands have moved since Office 2003. You can also pose questions to the large community of Microsoft Office users via free support forums and chats. Microsoft Office Diagnostics tool, included with the Office 2007 suites, is also designed to detect and repair problems if something goes haywire. sequential numbering using word