Hi Stephen,
> As written, I don’t think this scopes out scrolling marquees since there’s obviously motion there. I’m guessing you also want to exclude little things like a spinning coin? Or would that be dependent on size?
That’s a good point, I shouldn’t have used that as an example. We want to ignore the size/timing aspects we had in the term ‘significant’ when at AAA.
The core idea at AAA is to keep it simple and movement/size based (rather than colour or blinking). In discussions of this in a CSS context the terms are generally “motion” oriented, and the media-query is called “reduced-motion”.
In fact, scaling could be seen as a type of motion, which could be called movement, so perhaps the simplest is:
“For non-essential movement triggered by a user action, there is a mechanism to prevent the movement and still perform the action.“
Does that work better? Personally I find ‘motion’ more straightforward but I have a CSS bias.
These are all terminology optimisations around the core idea, so hopefully not a big deal to change.
-Alastair