Gets or sets an instance of a public class, implemented by the host application, that can be accessed by script from a hosted document.
Assembly: PresentationFramework (in PresentationFramework.dll)
is set with an instance of type that is not COMVisible.
This property can be set to any COM-visible object for which you want its public properties and methods available to scripting code. You can make a class COM-visible by marking it with the ComVisibleAttribute.
The object that is set for scripting is exposed to the current document by the HTML DOM using the window.external property.
Available since 3.0