Info box with details on the tree notation which changes with the provided style

[thefooly]

[hauswirth]

I wonder how far towards a full-fledged explanation animation/video one might want to go here.

See e.g., the explanation video I created for the ET study in PF2:
ET-Structure2.mov

[lucach]

What about the format we all love (GIF)? This is less than 200KB.