ref: b8acb5be3adb6a2c7f6f1a1cd9f371e65873b6d1 dir: /slides/mkfile/
PICS=`{ls *.p} slides.pdf: tmac slides.ms $PICS cat slides.ms | pic | troff -ms | lp -dstdout | ps2pdf -g1024x768 -r80x80 >$target