v9.0 (2011)

Returns the PPGLayout for the shader node associated with this shader definition. Getting the PPGLayout object using this property allows you customize how the ports appear on the shader node in the render tree. For example, this allows you to group some ports together.

// get accessor PPGLayout rtn = ShaderDef.RenderTreeLayout;

ShaderDef.PPGLayout Refining UI Controls for Parameter Definitions