What type of display is found in the lower half of the Message Viewer?

The lower half of the Message Viewer features a tabbed display window, which is designed to organize and present different types of information effectively. This layout allows users to switch between various tabs, each focused on specific aspects of the messages being viewed. The tabbed interface enhances usability by compartmentalizing information, making it easier for users to navigate and access relevant details without overwhelming them with too much information at once.

The use of tabs is particularly beneficial in applications like the Message Viewer, where users may need to access different message types or related information quickly. It streamlines the workflow, allowing for more efficient data retrieval and comprehension. This design choice aligns with user interface best practices, ensuring that essential features are easily accessible while maintaining a clear and organized visual hierarchy.