This example demonstrates a fault tree diagram built with GoJS, showing hierarchical relationships through nodes connected by orthogonal links. Each non-root node displays a gate shape—including AndGate, OrGate, Circle, or Triangle—with distinct color fills and an attached choice label. The diagram uses a TreeLayout with a vertical angle and implements drag-to-rearrange tree functionality. Code examples include node template bindings that dynamically set shape figures, fill colors, and rotation angles based on data properties, with undo/redo support enabled through the diagram’s UndoManager.