dumb question but i need to know

I just bought a 86 truck with 4 wheel drive. I know how to lock the wheels but the sticker on the shift knob came off so how do I know when Im in 4 wheel. Im assuming to the left and up is two wheel and over and Up or down is four wheel high and low but I not sure thanks

All the way up and to the left is 2wd straight back is 4wh form there over and all the way up os 4wl!