What is highlighted in blue in the documentation system?

In the context of a documentation system, highlighting an item in blue typically signifies a SmartLink. A SmartLink is often designed to provide users with intuitive access to related information or additional resources. By highlighting it in blue, the system visually indicates to users that they can interact with that element, such as by clicking on it to navigate to further content or reference links. This feature helps enhance usability and navigation within the documentation, allowing users to efficiently find and connect relevant information.

The other options relate to different kinds of information or notifications, but they do not inherently align with the universally recognized visual representation of a SmartLink in documentation systems.