# works at least with the Heirloom tools http://heirloom.sf.net

unix-explained-slides.ps: unix-explained-slides.ms
	sed '/./!d' unix-explained-slides.ms | \
		pic | troff -ms slides - | dpost | \
		awk 'NR==2 {print "%%BoundingBox: 0 0 600 450"} 1' \
		>unix-explained-slides.ps

handout.ps: handout.ms
	sed '/./!d' handout.ms | refer -e | troff -ms | dpost >$@

handout.pdf: handout.ps
	ps2pdf handout.ps