<?xml version="1.0"?> <!DOCTYPE colophon PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> <colophon><para> Draft versions of this book were produced with the DocBook DSSSL Stylesheets. Final production was performed with Troff. </para></colophon>