What is Module Inner Rim in SW Pillar Section?

Module Inner Rim adds a visible frame around the entire inner content area. Go to Style → Module Background → Module Inner Rim Options, choose Effect, and then select Glass, Grain, or Pattern. Module Inner Background Options controls the surface inside that frame, so you can pair the rim with an inner background such as white. The rim remains off until you choose Effect, and its default width is 25 pixels.