Minecraft wiki entry for Walls_and_buttresses, associated text: Could you have all of these different features on one wall? The answer is no, not normally. While most combinations are possible you should normally choose 1−4 possibilities and use those consistently throughout a design. However, a particularly large and grand room could use more. The picture shows a slab floor made of dark wood and a slab ceiling made of quartz; you can identify coving, panelling and skirting boards, and the presence of a chair rail and a picture rail are implied by the trapdoor/oak wood and oak wood/quartz borders.