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Drag nodes to move · Scroll to zoom · Del to remove · Double-click node to rename
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``` Wait, I have a bug — I referenced `ch` before declaration in the mousemove handler, and there's an undefined `function ch;` placeholder. Let me fix that. Also the `setLineDash` on the selection ring won't reset. Let me rewrite more carefully and produce a clean, correct final file. ```html NetGraph — Network Diagram Builder
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Drag to move · Scroll zoom · Del delete · Dbl-click rename · drag the ◉ handle to connect
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