In Speed Mode, you can set the speed of motion in both X and Y over the length of the transform animator. This allows you to animate resources onscreen at a known speed and ‘Ease’ in and out of a set speed from another speed or to/from stopped.
In the example above, the start speed is 0, the speed will increase to 1 pixel/frame (set in the centre section) over 5 frames, maintain that speed for 90 frames, then slow down to 0 over 5 frames. The profile sets the contour of acceleration and deceleration.