The Organization for the Advancement of Structured Information Standards (OASIS) recently approved OpenDocument as standard. OpenDocument is "a royalty-free, XML-based file format that covers features required by text, spreadsheets, charts, and graphical documents." OpenDocument serves as the native file format for OpenOffice.org version 2 and future versions of KOffice.
OASIS OpenDocument Essentials—Using OASIS OpenDocument XML shows you how to take advantage of this format. In addition to explaining the basics of OpenDocument, this book has examples showing how to extract information from, transform, and programmatically create OpenDocument files.