Fly the kite to the left side of the wind window and do a Belly landing. The kite is now on it's belly, nose pointing away from you, on the very edge of the window. Pull very gently on the left line to position the kite with it's nose pointing slightly inward. Now flick the right line which will cause wind to enter the right wing and in turn causes the kite to actually lift and "pop" back into the wind window.
Done indoors, or in light wind it can be turned into a 360. Just take a step towards the kite right after the flick.