A motion picture must not only contain 3D assets, but also additional information to communicate various aspects involved within a scene or shot. Heads Up Display (HUD) is useful to display the title, take name, frame rate, scene name, and so on regarding a specific scene to the viewer.
The HUD is available as an asset in the Asset Browser > Templates > Elements sub-directory.
You can customize the HUD element properties by adding a property of another asset or custom property. This helps to display more information regarding a scene in the Viewer.