You can copy a drawing from a whiteboard onto your Drawpad. For example, a student could copy a math problem to their Drawpad to attempt to solve it. You can also copy a drawing from your Drawpad to a whiteboard. For example, a student can copy their solution to a math problem to a whiteboard to share it with the class.
In both cases, the drawing is copied as it is at that point in time. The two drawings are not linked. Subsequent changes made to one drawing are not automatically applied to the other.