OS X Auto Open

[Colin Holgate]

Here's the answer for Lion, but there doesn't seem to be an exact matching option in Mountain Lion:

http://apple.stackexchange.com/questions/21112/in-lion-how-can-i-configure-to-not-automatically-re-open-recent-files-that-were


To save going to that page, you choose System Preferences, General, and there's a "Restore windows when quitting and reopening applications" checkbox.