What is a mask used for in Adobe Animate?

In Adobe Animate, a mask is a powerful tool used to create effects that reveal underlying layers. When applying a mask, the content on the mask layer determines the visibility of the layers beneath it. For example, if a shape is defined as a mask, only the parts of the layers beneath that mask that fall within the shape will be visible. This allows for the creation of dynamic visuals, where content can be revealed or hidden based on the mask's shape and movement.

Using masks is particularly useful in animation and graphics, as it enables creatives to design complex visual effects, refine what the viewer sees, and control the flow of information on the stage in an engaging way. By manipulating the mask, animators can produce stunning transitions, movements, and effects that guide the viewer's eye and enhance the storytelling aspect of the animation.

Other choices like creating reusable symbols, transforming shapes and objects, or managing asset libraries focus on different functionalities within Adobe Animate. While they serve important purposes, they do not specifically relate to the core function of masks, which is all about controlling visibility and enhancing visual effects in a layered environment.