Which Widget feature utilizes XPaths?

The feature that utilizes XPaths in the context of Mendix is selectable data constraints on Reference Selectors. This is because Reference Selectors are designed to filter and limit the choices available to users based on specific criteria, which can be expressed using XPath queries.

XPath is a powerful language used to navigate through elements and attributes in XML documents, and in Mendix, it is used to define constraints that determine which objects from the database can be displayed in the Reference Selector. By applying XPaths, developers can control the data that is fetched, ensuring that users only see the relevant options that meet the defined conditions. This not only optimizes user experience but also enhances the accuracy of data entry by preventing irrelevant selections.

Other features listed, such as data tables, form layouts, and navigation menus, do not primarily rely on XPath expressions to function in the same way that Reference Selectors do for filtering data. Data tables may display data but do not require XPaths to present the information. Similarly, form layouts and navigation menus focus on structuring and presenting content rather than filtering choices based on specific data criteria.