Sketch objects are objects that you may add in a drawing to highlight important information, or to indicate positions of openings, windows, doors, and such. In Tekla Structures drawings, you can use the sketching tools to sketch clouds, lines, circles, rectangles, arcs, polylines, and polygons, for example. Use these tools to explode and combine sketch objects, add cover-up outlines and part faces, and create fillets and chamfers. You can re-order sketch objects and sketch objects and building objects. You can also trim, extend, split and divide sketch objects, and copy objects using offset.