The Zoom and Spacing sliders provide two different ways to enlarge the graph image.
 Zoom Slider
The Zoom slider will proportionately enlarge the nodes and edges. As you zoom, the text size will get larger or smaller, and the thickness of the edges and other lines will increase or decrease.
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 Spacing Slider
The Spacing slider increases spacing between nodes without enlarging the nodes or making the edges thicker. This is useful for seeing connections within tightly connected clusters.
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