Softimage SDK Programmer's Guide > Plug-in Development > Working with the Softimage Scene Graph >

# Special Navigational Tools

The Softimage SDK offers many specialized API methods to traverse through relationships of the scene graph. For example:

- Parameter.Source (Parameter::GetSource in the C++ API) returns the piece of data attached to (driving) a parameter, such as an FCurve, Shader, Expression or Operator.

- The ConstructionHistory allows you to browse the operator stack.

- In the object model, you can use the SceneItem.LocalProperties (SceneItem::GetLocalProperties in the C++ API) to get the local versions of shared properties (material, for example).

- Geometry.Clusters (Geometry::GetClusters in the C++ API) provides the access to any cluster properties on the object.

  etc.