When I close a window and reopen it, the app loads again (similarly to pressing cmd+R to refresh). This makes it slow to reopen a window. For example, I want to close Gmail's window when I am done using it. And then, when I need it again, I reopen the window, and I don't need to wait for Gmail to load. The behavior would be similar to leaving Gmail's tab open in the broswer. Would it be possible to implement this?