Yesterday, I discovered a new-to-me keyboard command of great delight. I rely heavily on keyboard commands, but I do not sit down and read manuals usually, which means there are probably a great many handy ones which I have been failing to us.

cmd-H is my new one, discovered by means of, effectively, a typo. It is lovely. It hides away the currently-active program along with all its windows. The task bar is still there to tell me the program is still running - but the stray windows are hidden away from cluttering up that as well. In moments of too much necessarily-open software, it creates instant, blissful tidiness. I have every hope that my replacement machine will still have it as a feature too.