A picture is worth a thousand words but sometimes a picture can't capture the whole story. Asset Demo is a framework for an interactive demonstration of the assets. You can take screenshots all day but nothing conveys the same weight as actually seeing the assets in game. There are several options for showcasing animations, particles, materials or models. An asset can be presented by itself or as part of a larger whole.
The documentation can be found here
Take a look at a demonstration with some simple assets.
