<?xml version="1.0"?> <root xmlns="http://www.grid2004.org/ns/attribnames" xmlns:att="http://www.grid2004.org/ns/attribnames" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.grid2004.org/ns/attribnames attribnames.xsd"> <element attribute="something"/> <!-- <element att:attribute="something"/> --> </root>