So far we have discussed the flexibility of XML data, XML schemas and how they allow us to control the structure and content of the XML, and how to apply those schemas to XML content. By now you are probably wondering how to use Word to create the XML data to begin with. Word's XML Structure task pane is the answer to your question.
The XML Structure task pane gives you the ability to do these things:
Construct your XML data (add and remove elements) based on the attached schemas
View the subset of valid child elements for any existing element in the document
Review the structure of new or existing documents in a hierarchical manner
See any schema violations along with a description of the error
Control display of ...