Android’s physical navigation buttons are back on Googlebooks, but not the way you think

Googlebook keyboards have brought back a slice of Android circa 2014: the F1, F2 and F3 keys carry the old triangle, circle and square icons, which once meant back, home and app switching. On Googlebook OS they do the same jobs, with back useful for Android apps that are not fully optimized for desktop use. They serve as a familiar fallback when Android apps misbehave.

Summary written with AI by HowTechMoves, based on reporting by The Verge.