Tweek is an interesting case because it contains two distinct yet interoperable components: a C++ API and a Java API. It is possible to use one without the other, and it is even possible to configure Tweek so that neither is compiled. Of course, the latter is a rather odd case that usually only occurs when something went wrong during the execution of the configure script. Furthermore, Tweek can be compiled against any Java or C++ CORBA 2.3 (or newer) implementation. This is the result of using high-level CORBA standards and interfaces that allow ORBs swapped and allow ORBs from different vendors to communicate with each other.