xml namespaces XML namespaces are used for providing uniquely named elements and attributes in an XML document. They are defined in a W3C recommendation. An XML instance may contain element or attribute names from more than one XML vocabulary. If each vocabulary is given a namespace then the ambiguity between identically named elements or attributes can be resolved. (Excerpt from Wikipedia article: XML Namespace) 7 9 0.4 http://www.ariadne.ac.uk/sites/all/datacharts/hc/3699-chart-wp.html