ua2 = external "latex-bible.rnc"
ua1 = external "latex-bible17.rnc"
ua2play = external "latex-play.rnc"
ua1play = external "latex-play17.rnc"
xbeamer = external "latex-xbeamer.rnc"
start = ua2 | ua1 | ua2play | ua1play | xbeamer