+XP=xsltproc --nonet --novalid --xinclude
+
+XL=xmllint --nonet --noout --postvalid --xinclude
+
+# note: the URL is used as identifier, no HTTP is used!
+DOCBOOK_XSL=http://docbook.sourceforge.net/release/xsl/current
+
+# one file per chapter
+DBK2HTML=--stringparam chunk.section.depth 0 \
+ --stringparam section.autolabel 1 \
+ --stringparam use.id.as.filename 1 \
+ $(DOCBOOK_XSL)/xhtml/chunk.xsl
+
+# all in one file
+DBK2HTML1=--stringparam section.autolabel 1 \
+ $(DOCBOOK_XSL)/xhtml/docbook.xsl
+
+DBK2FO=--stringparam double.sided 1 \
+ --stringparam draft.mode no \
+ --stringparam paper.type A4 \
+ $(DOCBOOK_XSL)/fo/docbook.xsl
+# fop is currently in contrib, but can go to main now, AFAIK
+# alternatives: docbook2pdf (seems to die on UTF-8), dblatex (0.2.4
+# just hangs here) and xmllint (not mature enough, waits in NEW)
+FOP=fop