You can change the color, size, and shape of a node.
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To change the node color, you need to first choose the color using the Color Palette for the next selection, then select (by clicking on the node) you want to change. The node color will be changed to your choice.
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To change node size, you can keep clicking it (double-clicking) to increase its size. You can also use the Node Size functions to increase or decrease the node size.
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To change node shape, you need to first choose “All nodes” or “Highlighted nodes”, then select the shape you want to change. A total of 7 shapes are currently available.
The screenshot below shows changing the shape of highlighted nodes in star shape
