This .NET class wraps the AcGiContext ObjectARX class. 

The context can be thought of as the root object of the regeneration. A single instance of an Context-derived class serves as a point of reference during a given regen. It is accessible via both WorldDraw and ViewportDraw and hence is always available to the client. 

It is guaranteed that the ViewportDraw passed in to ViewportDraw() will return the same instance of Context as that returned by the instance of WorldDraw passed into the preceding call to WorldDraw().

Autodesk.AutoCAD.GraphicsInterface.Context

Public abstract Class Context
Inherits RXObject

public abstract class Context : RXObject;