Steve,
As widebear says arrow to exhaust. The ring pins in the piston are towards the rear so the ends of the rings run up and down in solid bore with no ports for them to flick open into. They will be staggered - at least they were on mine. Be careful not to get the ring on top of the locating pin, easy to do when fighting to get the cylinder on and it is possible to get the end caught up and the piston in the bore on some pistons.