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Tree graph and cycles
Trees are graphs that do not contain cycles. Each node of a tree has exactly one parent (except the root, which has none). This demo shows how to maintain a tree with automatic tree layout, and also how to allow users to add special backlinks that may create cycles but are not taken into account by automatic layout.
Demo instructions
Add child elements and watch the layout adapt. To create special backlinks, hover over an element and use the element tools to connect it to another one.
