A new module called Layered Image is now available in the Editor. It gives the possibility of inserting multilayered images into presentations, where each layer constitutes an image with transparent elements. All the layers are placed on an image which serves for some kind of a base for them. The Layered Image module offers a broader range of functionality than, e.g. the Image Viewer, as it enables to display the selected image layers individually, in groups or all of them simultaneously.
If you require more information, click here for the documentation details and here to see the Demo presentation on how to use, configure and style the Layered Image module.