Simple Question - How do you exit from Full Screen

Looking to migrate from ComicRack to a new library tool and just installed YAC. Was able to import my existing library just fine.

Clicked on the full screen button to see what that was like, and now I can't get back to a non-full screen mode. I've tried the 'F' key, the '+' key and esc. Nothing.

I've tried forcing YAC closed from the Windows task manager and it just reopens again in full screen mode.

I'm sure I'm overlooking something very simple. Help!

Running YAC 8.5.0 on a Windows 7 64bit system.

Did a little more digging and found the following suggestion:

"Please, go to: C:\Users\yourusername\AppData\Local\YACReader\YACReaderLibrary and open YACReaderLibrary.ini with a text editor.

Then delete the line starting with MAIN_WINDOW_GEOMETRY"

This worked perfectly, problem solved