In Xport, a document is considered an xhtml document, or report. The document could be considered a valid xhtml complete, or root document, in which case the document will contain the doctype declaration, and html, head, and body elements. Or a document could be considered a partial document, in which case it would not include the doctype declaration, and html, head, and body elements. In the first case above, the document would be considered a root document.