Moving the toolbar to the top took the back arrow with it, and left the only exit from a full-screen editor in the top-left corner — the furthest point on the display from a right-handed thumb, reached over the whole note to get to. Reported on the first device pass, and correctly. So the footer carries a Done as well as the timestamp. With the keyboard up it sits directly above the thumb, which is where a hand already is for every other part of writing a note. The top-left arrow stays. Two affordances for one action is usually clutter, but this is the case that earns it: the arrow is what habit, the system back gesture and TalkBack all expect of a full-screen surface, and removing it would strand the reflex to strike a duplicate costing one icon slot. A word rather than a checkmark, on the same argument the overflow menu makes: a tick in a notes app is a checklist item to anyone who has used one, and "Done" cannot be misread, including aloud. EditorSavedLine is now EditorFooter, since it is no longer only a line.