ref: 8c9e01339dbc166b4682d883b7fb8e3261b7f5b1 dir: /slides/mkfile/
PICS=`{ls *.p} slides.pdf: tmac slides.ms $PICS cat slides.ms | pic | troff -ms | lp -dstdout | ps2pdf -g1024x768 -r80x80 >$target