These commands
are used to change the amplitude of animation when animating shapes from an Animation or Comparison Source
Click on
to increase the amplitude of animation.
Click on
to decrease the amplitude of animation.
Click on
to enter a specific animation amplitude into a dialog box.

Animation amplitude is also used in conjunction with Animate | Scale Shapes | Fixed Scale to fix the amplitude of animation.
See Animate | Scale Shapes | Fixed Scale for details.
If Amplitude and Speed is checking on the Animation tab in File | Structure Options, the animation amplitude and speed are displayed in the Legend box during animation.