* NOTE: On macOS, in order to scroll Timeline or Keyframes horizontally with a mouse wheel (not Magic Mouse or track pad), you must also use one of the following:
Shift and click the last (or first) clip. Multiple Selection in Playlist and Timeline
Double-click a fade in/out control (circle) to toggle it between one second and none.Position of the mouse cursor without clicking and dragging. Press and hold Shift+ Alt to skim - scrub/seek using the horizontal.Usually move the app window so, press Alt after you start dragging. On Linux, pressing Alt before dragging will While dragging shot or trimming, press and hold Alt to temporarily.Press and hold Shift+ Alt to skim - scrub/seek using the horizontal
