An XHTML export template has a Header section and a Detail section separated graphically by a line across the tree view. Other DataWindow bands are incorporated into these sections.
A line across the Export/Import Template view separates the Header section from the Detail section. The first element after this line, d_dept_list_row in the previous screen shot, is called the Detail Start element.
There can be only one Detail Start element, and it must be inside the document’s root element. Each band of the DataWindow is wrapped by a <div> element. When the DataWindow is exported in XHTML, this element and all children and/or siblings after it are generated iteratively for each row.