disagreed, answers do not become outdated in less than a year. I have pulled the initial trick about the cmd-F1 toggle to make the presentation screen black from a thread that was several years old. These Exposé options that went awry are going to survive for many more years, and they have been there since how long, Mountain Lion?
High-level people take time to provide thorough answers and it's not useful to delete them after half a year and wait until someone asks again and they write the whole blob all over again (or they don't, at some point). That's a disregard of specialists' time.
The amount of users and similar questions and not-so-useful answers is exactly the reason why relying on search is inefficient. But I accept that Apple redesigned the page so one cannot find older things any more, as one was able to. So thanks for answering.