It is also often referred to simply as the "Plus System." FYI, I described and illustrated interpretations of "Plus Two" name in my August '10 BD article. If you're curious, check it out.It is called the "plus 2" system.
Also, FYI, several articles and video demonstrations illustrating and demonstrating how to use the system (and make adjustments when appropriate) can be found here:
Enjoy,
Dave