+
+. /////////////////////////////////////////////////////////////////////////////
+. These lines are processing instructions for the Simple DocBook Processor that
+. Philip Hazel has developed as a less cumbersome way of making PostScript and
+. PDFs than using xmlto and fop. They will be ignored by all other XML
+. processors.
+. /////////////////////////////////////////////////////////////////////////////
+
+.literal xml
+<?sdop
+ foot_right_recto="&chaptertitle;"
+ foot_right_verso="&chaptertitle;"
+ table_warn_overflow="overprint"
+ toc_chapter_blanks="yes,yes"
+ toc_title="Exim's interfaces to mail filtering"
+?>
+.literal off
+