You can insert a node in any span. Inserting a node divides a span into two new spans of the same type as the original. By inserting a node you add greater flexibility in changing the shape of a vector.
To insert a node in a span:
button.
to
, right-click to display its context-menu.For example, a node
has been inserted into the Bézier curve span below. You can see that doing so has created a second Bézier curve span with two adjoining control points:
Before

After
