Sweep command in AutoCAD

Using the commando sweep to let an object follow a particular path.

First you draw the path, such as a spline.
Then you draw an object perpendicular to the spline, in this case a circle.
Then type the command sweep.
You select the object, which must follow the path (circle).
Enter.
Finally select the path (spline).
Enter.

Now if you put everything in color than you see that the circle has followed the path.