Hi Denis, See what happens in the list of branches when you run: Event 100 0 0 1 (no split) Event 100 0 1 1 split level 1 Event 100 0 2 1 split level 2 See the documentation at page 223 and next for an explanation of the split level. You can disable TObject via TClass::IgnoreTObJectStreamer. In the Event example, we call this function for the Track class. (see MainEvent.cxx) You can do the same for Event if you like. Rene Brun Denis Bertini wrote: > > Hi all, > > Running the example Event from $ROOTSYS/test i noticed that > the TTree created contains now additional leaves called "TObject". > For what is this used ? > How can i get rid of this additional leave? > Regards, > Denis >
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