It has always bugged me that in order to interact with a window in OS X - I have to click on it first to bring it to focus. I just installed El Capitan on my mac (was on Mavericks before that), and I noticed that if I open Pages and some other program (say, "Chrome") - if I focus on the Chrome's window and have the Pages window behind it - I can start interacting with the Pages window without having to click on it to bring it to focus first! (for example start selecting text) Unfortunately it only seems to be working in Pages . And I also can't check if it was working before on Mavericks (if someone has a Mavericks machine available - can you please check this and let me know if it works there) Could it be that Apple is planning to bring this feature across the entire OS? Does anybody have more info on this by any chance? Thanks!