The document discusses different methods for rendering and formatting XML documents, including CSS, XSLT, and XSL. CSS allows basic formatting but does not support reordering or conditional display of elements. XSLT uses XPath expressions to extract data from XML and transform it into other formats like HTML, and supports operations like reordering, adding, and deleting elements. The document then explains various XSLT elements and template rules that can be used to select, sort, and format XML data for display.