Hoping some of you AE experts can shed some light on this...
I received some source project files and noticed that the shape of some of the keyframes looks like this: < >
The keyframe controls the size of a rectangle path.
At first I thought it was Easy Ease In/Out.
When I tried that, the shape of my keyframe looks like the curvy hour-glass shape, not < >.
So I'm not sure how or why these keyframes look this way and would love to learn more.