To remember a point (assign it to a variable), use this simple syntax at the command prompt. This assigns the point you pick to a variable named ‘pnt’. You can repeat this procedure to store several points with symbols like ‘pt1’, or ‘pointone’.
Command: (setq pnt (getpoint))
Anytime you want to refer to that point within the same drawing session, simply prefix it with an ! at the pick point prompt.
Base Point: !pnt