I'm calling it a "thing" because I don't know what to classify this as. I was attempting to delete the save on my old Pokemon White 2 cartridge, and before the game booted up, I held down B, SELECT and down on the D-Pad, which deletes the save on Pokemon White 2. When the game booted, the game was displayed smaller on the screen than usual. I don't know how to describe it, so I have a picture. It doesn't do this when I boot the game without touching anything. I don't know if this is something that happened in past 3DS firmwares.