I am using Nitro Pro 11 and until the other day the program would ask me if I wanted to close just the current document or all documents when clicking the X in the upper right corner... I accidentally turned it off, and now I don't know how to turn it back on. I work with many files open and only want to close them one at a time.
I have looked through all the settings that I can find and don't see anything.
Help?
Thank you!