You can kill your curiosity
HERE, RattusKid, although the code posted there is from 1.2a, before getting the 3d flood and fill and with the 'distortion' that was removed on 1.2c. The explanation for these things are there too. Anyway, the source code of the program comes with it and the normalizer code is on Voxel_Tools.pas and the cubed normalizer part is quite well documented, imho (if you compare with Stu's code that has a horrible documentation :P).
Anyway, the cubed normalizer does a good job, but not perfect as I originally thought once I saw that Mad Dog Mech normalized. For very smooth angles, it might not do a perfect job, but for the vast majority of the angles, it does an excelent job and a much better job than the old normalizer.