Sketch Booleans can be generated from the addition, subtraction, or intersection of overlapping sketch objects. The original geometry used in creating the sketch Boolean is retained in the Design Tree and can be shown in the Work Area. Sketch Booleans can also be removed to return to the original geometry. Create sketch Booleans by adding, subtracting, and using the intersection of existing sketch objects. Use the Show Hidden Geometry command to display the underlying sketch objects. Use Remove Boolean to revert back to the original sketch geometry.