externals/gridflow/doc/images/crop_icons


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if [ "z$1" = "zall" ]; then
  foo="\@*.png format*.png"
else
  foo="$1"
fi

for z in $foo; do \
	echo $z
	pngtopnm $z | pnmcrop | pnmtopng -background black -transparent =red -compress 9 > $z.new
	mv $z.new $z
done