Hi Dan
Currently, at least in the USA, you can take a program from one of the independent training centres and get copy of the log viewer. The internal help system is the only documentation on the program. You need to be an iRMT in good standing and have taken the injected installation and systems program to take the log viewer and diagnostic program.
We continue to request that they perhaps consider opening up the documentation on the viewer in the heavy manual. The good thing if you take the class is the viewer is given out to all the students at that time. It is however available to use on a Mac also, too bad the BUDS will not work on Mac.
Cheers