[Control, ⌘, Spacebar]
As demonstrated by Ben Mercer and Jan Willem den Bok among others, it's a great way to quickly visualize information in FCPX. For example I like to add a ❌ to my "do not use" cuts, and a ✅ to my current cuts.
This way I see immediately that FCPX has opened the proper cut or an old cut in the Timeline without deciphering the names themselves.
I'm still experimenting, and I suppose if you use too many emojis, things start to get blurry again, so it's a balance.
