The Freehand button
draws freeform objects as if you were drawing with pencil and paper.
This button is especially useful if you are using a digitizing pad and pen to trace drawings. When you finish drawing, Designer automatically smooths the object and converts it to curves.
Freehand objects are open unless the last point is the same as the first; then Designer automatically closes it. If you want to close an open freehand object, select it, open the Arrange menu, and choose the Connect Closed command. The ends are connected with a straight line.