show time; prefix 27 8
if {4} != "clean"
	prefix {1}
	if {4} != "all"
		for i in {3}
			echo "### {1}: {i}"; age {2}/{i} {i}.b
			if {age} != 0; mdbasic -p {i}.b -o {2}/{i}; end
		end
	else
		for i in {3}; mdbasic -p {i}.b -o {2}/{i}; end
	end
else
	echo "### deleting {3}"; prefix {2}; delete {3}
end
prefix 27/