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Howto use PSMI for page orientation on PDF
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1) Process book.xml to book.psmi using docbook-psmi.xsl

$ xsltproc docbook-psmi.xsl book.xml > book.psmi


2) Process book.psmi to book.fo using docbook.xsl

$ xsltproc docbook/fo/docbook.xsl book.psmi > book.fo


3) Process book.fo to book.pdf using an FO formater such as FOP or XEP

$ xep -fo book.psmi book.pdf


