An interface exposed by the debugger engine for extensions. It contains a subset of the functionality of the debugger engine API and can only be used by extensions.
An extension based on the prototypes in the wdbgexts.h header file. These extensions use the WdbgExts API.
An emulation layer in 64-bit Windows that can run 32-bit Windows applications. When debugging a 32-bit application running on 64-bit Windows, it is important to distinguish between the application itself and the WOW64 subsystem.