In the command window, you also need to draw the command of spiral knife. After drawing, you can put the mouse on the command. Take the circle as an example here. After clicking the command, pay attention to the prompt on the command line here and just follow the prompt. First, select a central position, click the selected mouse button once, then enter the radius of the circle, and then click the left mouse button or click the keyboard space. Then follow the prompts, and each step only needs to click the keyboard space or enter or the left mouse button. If you want to quit this command, you can also click esc directly to quit.