A node is a small square on a line, curve, or object outline you use to edit the object. When you select a curve object with the Shape tool, CorelDRAW displays all the object's nodes. You can shape a curve object by moving a node or by moving the control points attached to a node.
Control points determine the curve of a segment as it passes through a node. You can control the curve of a segment by varying the control point's angle and its distance from the node. Each node has a control point for each curved segment connected to it. A node at the end of a curved segment has one control point, while a node between two segments has two control points.
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