George> What 'magic' ? The (x,y,z) notation is used only for 3D George> vectors. (x,y) is also common for 2D and perhaps (t,x,y,z) for George> 4D, with t for time.
Don't forget (w,x,y,z) for quaternions... Skip -- http://mail.python.org/mailman/listinfo/python-list