1<?xml version="1.0"?> 2<!DOCTYPE doc [ 3<!ATTLIST elem xmlns CDATA #FIXED "urn:def2"> 4<!ATTLIST elem xmlns:a CDATA #FIXED "urn:a2"> 5]> 6<doc xmlns="urn:def" xmlns:a="urn:a"> 7 <elem xmlns="urn:def2" xmlns:a="urn:a2"/> 8</doc> 9