The Path Editor dialog is used to modify the shape and number of control points along a Path. The Path Editor dialog appears when a Path is selected with the Vertex/Node Selector Tool.
Move - Moves one of the path nodes by clicking and dragging it. If a node is highlighted and you click away from any path node and proceed to drag, the highlighted node will move.
Add - Clicking on a node in the path will add another control node in front of it.
Delete - Clicking on a node in a path will delete it from the path. It is not possible to delete the first or last node of any path. A closed path must have at least three nodes.