Which category is NOT included in the grouping of Mixins?

In the context of Pega and its styling framework, Mixins are used to apply common styles across various components and help maintain consistency in the user interface. Each category of Mixins serves a specific purpose in the design process.

The category labeled as Icons is not considered a valid grouping of Mixins. Mixins are primarily focused on fundamental styling aspects like Typography, which deals with font styles and text attributes; Backgrounds, which pertains to setting background colors or images; and Combinations, which refer to the integrating of multiple styles into a cohesive unit.

While icons play a significant role in user interface design, they typically fall under specific components or libraries rather than being grouped as a Mixin category. Thus, by identifying Icons as the category not included in the grouping of Mixins, it is clear that the focus of Mixins is on styles and their applications, rather than on graphic elements represented by Iconography.