trap "rm /tmp/ptx1$$ /tmp/ptx2$$; exit" 1 2 15
ls *.* | sed 's/\./(/
	s/$/)/' > /tmp/ptx1$$
sed -n '/^\.SH *NAME/{
	n
	p
	}' *.* > /tmp/ptx2$$
pr -t -m '-s ' /tmp/ptx[12]$$ | sed '/^ *$/d' > index
rm /tmp/ptx[12]$$
