I have graduated from ntuples to a tree of ClonesArrays which is
a big improvement in many ways. I see, when I do tree->Print(),
variables called fUniqueId and fBits for each of my objects.
UniqueId sounds like a great thing but all of mine are zero.
Maybe I need to look harder but I haven't seen this mentioned.
Can you tell me how to get useful information into and out of fUniqueID?
Thanks
Bill Love