Node Shapes
Besides the basic rectangle node shape, there are many different shapes that you can use to represent node types. Here are a list of the node shapes currently supported, you can hover over them to see a preview.
To change the shape of a node type, open the Node Filter window, then click on the node type button of interest, and you'll be presented with another dialog that lets you configure the node shape, label style, etc.
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You can also do a lot on than just changing the node shape. You can add one or two borders, change the border colors, change the fill colors, add a background image, and change the label style.
Node Icons and Images
Besides changing the background image of a node, you can also change the node label icon (which is displayed beside and on the left of the label) for individual nodes. To do this right click on a single node and choose Change Label Icon. Then choose the icon image that you want to display. Obviously smaller imagese (e.g. 16x16) look the best. To remove the label icon choose Remove Label Icon from the context menu.
You can also add an overlay icon to a specific node. To do this right click on a node and choose Change Overlay Icon. Then choos the icon image to display, and choose the scaling and positioning for the icon. The icon can be positioned anywhere inside the node. You can also choose when the icon is displayed - on closed nodes, open nodes, or always. To remove the overlay image choose Remove Overlay Icon from the context menu.
