Rendering to elements lets you separate various types of information in the rendered output into individual image files. This can be useful when you work with some image-processing, compositing, and special-effects software.
(Render Setup). If you have assigned a file name for the entire rendering, the new element is assigned a file name automatically. Otherwise, use the
(Browse) button in the Selected Element Parameters group to assign an output file name and file type for the element rendering.
As they render, the elements are displayed on the desktop, each in its own window. (The windows cascade on top of each other.)