#!/dis/sh
# example use of the arg module, as documented in sh-arg(1).
load arg
bflag := cflag := 0
file := ()
args := $*
(arg 
	bc	{$opt^flag = 1}
	f+	{file=$arg}
	'*'	{echo unknown option $opt}
	- $args
)
echo $0 $bflag $cflag $file
echo arguments are $args