Focus Mode

Tools > Focus Mode (or F9) is a distraction-free writing mode, similar to Scrivener’s Composition Mode: the window maximizes and all chrome — menu bar, binder, other dock tabs — disappears, leaving just the current document centered in the available width. The paragraph your cursor is in stays at full brightness while other paragraphs dim, a typewriter-style aid for keeping your eye on the sentence you’re actually writing.

Focus Mode needs an open document to enter — with nothing open there’s nothing to focus on. Press Escape or F9 again to exit and return to the normal layout.