> For the complete documentation index, see [llms.txt](https://abhishekshankar.gitbook.io/uxm/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://abhishekshankar.gitbook.io/uxm/criterion.md).

# Criterion

- [Criteria](https://abhishekshankar.gitbook.io/uxm/criterion/criteria.md): The basis of the guide and the classification system
- [Component Groups](https://abhishekshankar.gitbook.io/uxm/criterion/component-groups.md): Components are interactive building blocks for creating a user interface.
- [Motion Functions](https://abhishekshankar.gitbook.io/uxm/criterion/motion-functions.md): Motion can serve various functions to enhance the visual hierarchy, provide feedback, create a sense of place, communicate relationships, add personality, and simplify complex interactions.
- [Motion Principles](https://abhishekshankar.gitbook.io/uxm/criterion/motion-principles.md): Motion needs to be considered as a key element in the design process, rather than an afterthought, and its use needs to be intentional to improve the user experience.