local args = { ... }

if #args == 0 then
    pfun = tx.suck
elseif args[1] == 'down' then
    pfun = tx.suckDown
elseif args[1] == 'up' then
    pfun = tx.suckUp
else
	print( "Usage: suck[ [down|up]" )
	return
end

pfun()
