Entering b Enter at the command line will pop up a dialog box, then click' Object' to select the object you want and press right key or enter, select' Base Point' to select the pickup point you want and press right key or enter, and finally enter the name you want in the name line (easy to remember and simple), and press OK to exit.

This premise is that the signature has been drawn.

If you don't know what all this means, I suggest you learn from the beginning.