width = 70
height = 30

template.txt: gray.gif Makefile
	giftopnm $< | pnmscale -w $(width) -h $(height) | pnmgamma 0.2 > tmp.pgm
	pgmtopbm -threshold tmp.pgm | pnminvert | ppmtoxpm | ./xpmtotxt.pl > $@
	rm tmp.pgm

clean:
	-rm template.txt

backup:
	-rm -f backup.tar.gz
	tar cf backup.tar *.gif *.jpg *.cdr *.pl *.keep Makefile
	gzip -9 backup.tar