The "pop-up menu" has been essential to Chinese Human-Computer Interaction since the very first Chinese computer in 1959.

Here's how you input "plagiarism," for e.g.

Notice how the pop-up menu is responding to each new keystroke, giving suggestions along the way. pic.twitter.com/ilBh1iA6ei

— Tom Mullaney (@tsmullaney) May 20, 2024