<?xml version="1.0"?> <!DOCTYPE EMAIL SYSTEM "LstA_2.dtd"> <EMAIL PRIORITY="HIGH"> <TO>Jodie@msn.com</TO> <FROM>Bill@msn.com</FROM> <CC>Philip@msn.com</CC> <BCC>Naomi@msn.com</BCC> <SUBJECT>My document is a tree.</SUBJECT> <BODY>This is an example of a tree structure.</BODY> </EMAIL>
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