This workshop was about looking at movement and how you could speed up and slow down objects to make things look more realistic.
This is where you can find the option to ease in or ease out objects along a position path. Ease in would make it start slow and speed up, ease out would do the opposite and then there is the option to do both together.
This screen shot shows how the dots on the line appear closer together if the object moves faster over this part of the line.
These graphs give you the option to change the balance of the speed along the position line.