This is an old glitch for an old game and a few uses for the glitch.
Glitch: In order to do the screen warp glitch, you have to get as close to an edge of the screen as possible. Then when close enough, move into it as if you're going to the next screen but hit select before, or as you scroll. This will cause you to be on the other side of the next screen. Also, depending on how well you did it, you can clone items and move people along the ride.
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Este glitch permite que Link, al cambiar de cuadro, aparezca en el lado opuesto en el que...