That looks like a preview-rendering box, if I am not wrong... but I am quite sure you now about that, right?
*Fuchur*
PS: You can always open a second window, go to "window" and tile it like you want. So you get different views...
Thats what it reminded me off. But i didn't hit any shortcut keys to bring it up. An my render icons aren't even on the screen. So its not like i could actually hit it. An not to mention that i didn't even see a render preview load at the bottom of the screen.
I know how to tile the windows to view models from different angles. I was more curious if this was another way of doing it. Or if i had a weird glitch in my program.