<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook V3.1//EN"> <book> <bookinfo> <title>DocBook: The Definitive Guide</title> <authorgroup> <collab><collabname>Lenny Muellner</collabname></collab> <collab><collabname>Norman Walsh</collabname></collab> </authorgroup> </bookinfo> <chapter><title>Just an Example</title> <para> This is just an example, in real life, Lenny and Norm are both <sgmltag>Author</>s. </para> </chapter> </book>