One of the most annoying things about Illustrator is the seemingly pointless back rectangle in the middle of your image. This rectangle is called the Bounding Box. These articles will explain a little more about it and most importantly how to get rid of it.

forums.adobe.com/thread/1269693?tstart=0
Every time I open up a previously made image, usually a jpg of an illustration I did by hand, there is an outline of a rectangle right in the middle of my image. I have no doubt I put it there while doing something else. But, now it shows up in all the ...

graphicdesign.stackexchange.com/questions/36105/how-to-get-r...
I'm trying to work with this photo in Illustrator CC, but there is this black box in the center of the page. I tried ignoring it but when I save my image, it only saved whats in the black box....yet I can't seem to decrease the size to just the box. I' ...

www.youtube.com/watch?v=OLS6qpBfQ8g
Follow this step by step tutorial to learn How to use the bounding box in Adobe Illustrator.

graphicdesign.stackexchange.com/questions/9437/toggling-boun...
I apologize if this has been covered a thousand times, but I'm new to AI and I don't even know the technical terms of these things to find anything in Google, I've been trying.
When you select an object to resize it and hit the command button, ...