One way to draw and edit vector objects in Fireworks is to plot points as if drawing a connect-the-dots picture. When you click each point with the Pen tool, Fireworks automatically draws the path of the vector object from the last point you clicked.

In addition to connecting the points with only straight segments, the Pen tool can draw smooth, mathematically derived curve segments known as Bézier curves. Each point's type--corner point or curve point--determines whether the adjacent curves are straight lines or curves.

This is a picture of the feature being described.

You can modify straight and curved path segments by dragging their points. You can further modify curved path segments by dragging their point handles. You can also convert straight path segments to curved (and vice versa) by converting their points.