When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.
pro-tools-expert.com
A-Z of Pro Tools - X Is For X-OR, X-form and Xpand2 | Pro Tools - The leading website for Pro Tools users
If it weren’t for the habit of using X as shorthand for “cross” I’d be having to write something about XML, I don’t think that would have been much for for me or you… Luckily there are a few other candidates for X: