Refinements consist of dimensions and dimension values. Some cartridges allow you to change the order in which dimensions appear on a page.

Dimensions are the top-level refinements. For example, a Camera application might use the following dimensions, among others:

Each dimension can have one or more dimension values. For example, Features can have the following values:

Visitors to your Web site can navigate using dimensions and dimension values. In the following example, the user has navigated to cameras under 25 dollars with face tracking.