Office stores documents in XML format. You can create customised filters that convert the native OpenDocument XML file format used by Office into another format. These filters can be integrated into Office seamlessly so that you can save or load these formats transparently.
To create an XML filter, you must have a good understanding of XML and XSLT concepts. These concepts are beyond the scope of this help.
An XML filter contains stylesheets that are written in the XSLT language. The stylesheets define the transformation from the OpenDocument file format to another XML format through export and import filters. There are three types of XML filters: