OpenGL specific extensions
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box — Draw a bounding box around nodes.
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axes — Defines methods to draw axes.
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extInfos — give the capability to draw some information
near each node.
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scale — Draw an arrow with a label.
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fogAndBGColor — Handle the background colour and the fog.
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legend — Draw a frame with the representation of each
atom species, its name and the number of elements.
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marks — Draw features on nodes, like measurement marks
or highlights.
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rings — an extension to highlight closed rings in a structure.
New rendering facilities.