If you haven't worked with nodes before, your imagination should be starting to take off a little with the possibilities. You can add more nodes and change the nature of the line segment as well. We can do that. There is actually a shortcut to that task, but let me step you through it the long way to make sure that you really understand what is happening as you edit the node. When working with vectors, you must always keep in mind that there are two types of lines, known as curves and lines.
Curves have curves, or control points, as shown in the sample at the left.
Lines do not have control points. This becomes important when we wish to reshape objects, since we often have to convert lines to curves or curves to lines to accomplish the necessary effect. Node has lines on either side. Lines are converted to curves. Node is converted from Cusp to Symmetric for a smoother transition over the node.