XML Example - the XML document
<?xml version="1.0"?><!DOCTYPE addressBook SYSTEM ”ab.dtd"><addressBook> <person id=“B.WALLACE” gender=“male”> <name> <family>Wallace</family> <given>Bob</given> </name> <email>bwallace@megacorp.com</email> <link> manager=“C.TUTTLE”/> </person> <person id=“C.TUTTLE” gender=“femail”> <name> <family>Tuttle</family> <given>Claire </given </name> <email>ctuttle@megacorp.com</email> <link subordinates=“B.WALLACE”/> </person></addressBook>