# Sandbox.UI.CurveEditor.NavigationBounds

```csharp
System.Nullable<Rect> NavigationBounds { get; set; }
```

Navigation bounds in actual time/value units. Only the time limits constrain navigation;
vertical pan and zoom remain free. Bounds rescale with edits to the curve's axis ranges.

Declared in [Sandbox.UI.CurveEditor](/api/Sandbox.UI.CurveEditor).
Assembly: `Sandbox.Engine`.