This .NET class wraps the AcGiClipBoundary ObjectARX struct. 

ClipBoundary is used to pass a clip boundary specification from a drawable to the underlying system. 

Since boundary clipping closely matches view clipping, it's easiest to consider the parameters in this sense. Imagine that the clip boundary defines a view on the model. To define a view a view direction and a target point are required. These are specified in the main coordinate system, the transformation to the coordinate system should match these values and include any required rotation or twist.

Autodesk.AutoCAD.GraphicsInterface.ClipBoundary

Public sealed Class ClipBoundary
Inherits DisposableWrapper

public sealed class ClipBoundary : DisposableWrapper;