Layers are containers for visual, audio or layout items and are added to slides [?]
A "slide" in Slider Revolution is a container into which multiple layers can be added, with layers in turn acting as containers for various forms of media such as images, text, video, audio, buttons, and special effects.
Slides are added to modules and edited via the module editor.
Within the module editor, each slide has its own animation timeline, background and collection of layers.
A single module can have one or many slides. A module with one slide is called a scene, and a module with multiple slides is called a slider or carousel.. For example, text, button, image, audio, video, group and row are all types of layers.
Layers are added to slides via the module editor [?]
The "Module Editor", also known as the "Visual Editor", is an interface used to create & modify modules.
It's through this interface you can add various types of layers to your modules, as well as animation and special FX..