A decorative motion (the default) collapses to zero under reduced motion, which is what
"reduce" means for a slide, spin or zoom. A meaningful motion, one that conveys state
rather than moving the viewer through space, is shortened instead of deleted, so a health
bar still visibly fills and a selection still visibly moves.
The duration a motion should actually take.
A
decorativemotion (the default) collapses to zero under reduced motion, which is what "reduce" means for a slide, spin or zoom. Ameaningfulmotion, one that conveys state rather than moving the viewer through space, is shortened instead of deleted, so a health bar still visibly fills and a selection still visibly moves.