A corner staircase design effect drawing is a visual representation that illustrates the design of a staircase that turns at a corner. It typically includes dimensions, material finishes, and structural details to help visualize the staircase in a building or home. Corner staircases can be used to save space, especially in smaller rooms or buildings, and can come in various styles, from simple to elaborate. They often serve as a focal point in a space and are crucial for ensuring safe and efficient movement between floors.