Scroll down for the next item. Swipe left past thirty percent of the screen width if an item is too hard, or right if you already know it. With the feed focused, the left and right arrow keys do the same, and Space pauses a video. A paused video shows its title, its controls and a seek bar; when it ends, its quick check, sources and what comes next. In a card story, Space and Shift with Space move between cards, as do its Previous card and Next card controls. On a video, M turns the sound on or off, and the less-than and greater-than keys change the speed.