Role and function of animation charts:
Animation charts are used to guide animating to find which pose is a keyframe or a breakdown frame.
How it works:
On an animation frame, you draw a chart and label the top and bottom K for the keyframe and in the middle B for the breakdown frame.
I made a bouncing ball animation in animate using animation charts:
Bouncing ball charts with WIP images:


My finished bouncing ball gif:
