Curves

Bezier and closed bezier:

Click the bezier or the closed bezier line from the curve submenu under the draw menu.

Click the points on the drawing area.

Double-click to complete.

Nurbs and closed Nurbs:

Click the nurbs or the closed nurbs line from the curve submenu under the draw menu.

Click the points on the drawing area.

Double-click to complete.

Free Line:

Click the free line from the curve submenu under the draw menu.

Drag the mouse keeping the left button pressed. The free line will be drawn.