Hello Lightstalking friends: I’ve been enjoying this group for quite a while, and I have a question. Last week I was reviewing photos I had taken. So I was not shooting; I was looking at completed photos on the LCD screen of my Nikon D3100. I must have hit one of the buttons with my thumb or finger because I got a “box within a box” in the lower right-hand corner. At some point it disappeared. Was it some kind of cropping box or live view? I tried following the instructions for live view and also for face priority in my user’s guide but couldn’t duplicate the mysterious box. Do any of you know what I inadvertently created? Thanks.